Analog Computers

Reference / Paper · 1978

Practical Electronics, December 1978 — Analogue Computer Part 4 (Conclusion)

Read the PDF (88 pp) ↗

The concluding instalment (Part 4) of a four-part constructional series on building and programming a home-constructed analogue computer, published in Practical Electronics, December 1978. The article by P. J. Kronis covers programming techniques including damping systems (impulse, step, sinusoidal and random forcing functions), Lissajous figures, flight simulation of a lunar lander with amplitude and time scaling, and a survey of special circuits such as diode limiters, dead-zone, absolute-value, and flip-flop circuits. The issue also contains a corrected patch-panel diagram (Fig. 3.2) that was misprinted in Part 3.

Manufacturer
Practical Electronics
System
DIY Analogue Computer (Practical Electronics series)
Author
P. J. Kronis, B.Sc.
Year
1978
Type
Reference / Paper
Language
English
Learning track
specific applications
Pages
88
  • DIY Analogue Computer (Practical Electronics series)
  • Practical Electronics
  • analogue computer
  • programming
  • amplitude scaling
  • time scaling

← Back to the Reference Library

Practical Electronics, December 1978 — Analogue Computer Part 4 (Conclusion)

PRACTICAL Aii.,ii,i11.1 85c New Zealand 85c South Africa 80c Malaysia $2.75 ELECTRONICS 50p DECEMBER 1978 FREE CHROMOSONICS - INSIDE' CAIII0 WORTH 40 PENCE product for Barnes, a new out of date.cartridge, cartridge will not go each new produced and your have that ADO up to to assemble available, asst family, of easy becomescentre will be will and all your You you video colour Teleplay way.White TV, the and date OK on Black Works run. long in the Pounds save TELEPLAY Teleplay the presents PROGRAMAGAME time of all Finished Controls of a Professional Hand games - - Kit consis Box- Joystick of 10 The TelePlay Moulded (1 & 2 consists Solo Squash (1 84 All Basketball Footbaii,Teonis, Hockey,etc. Mains Adaptor. players), Shoot No Special -drilled players) , be surprised You'll are pre holes this requird. equipmentit is to assemble Manual Inject one cartridge We offeryou this to for ONLY all £2890 which TELEPLAY how easy kit! Instruction at 0.45p. BUILDING professional + £2.31 separately THE FUN supplied TWICE PROFESSIONAL_ Assembled YOU MOST Fully THE GIVES £35.90 PLAYING AND EVER OF VAT KIT TVGAME Main. Console has Facility Handicapin Switches. g 3 months a NEVV Every already and those under to you available will become Submarines, game include and many production Out will of these SpaceWipe The price £19 depending FulIV £12 to more. of the garre. ssernbled from add vary +-f.:154.v9A.OT÷. £3.00. the complexity NOW 90 upon onst.r9ools 912 Hand rtridges T. kit and "tiona include basic + El .03 with Cartridges Controls completefollow Adth already corne easy to an d available 4 games cam, dges Controls case " instruct Cyclet Stunt Carus Battle- 2 Barnes - Cartridge REALISTIC SOUND EFFECTS Race Road - - , toAccess Electrical knowledge is not a necessity to assemble this project - just simple soldering.asse rnbjv Cheques and Postal Orders to be made payableTELEPLAY; send your order (No Stamp Needed) to Teleplay, Freepost, Barnet, EN5 2BR or telephone your order quoting your Barclaycard or number. Queries and Technical Advice offered either by phone or by calling at our shop. BARCLAYCARD' Wrnil SHOP OPEN-10am to 7pm - Monday to Saturday CLOSE TO NEW BARNET BR STATION - MOORGATE LINE aft *minim lacy. Watch this page each month for new cartridges, as they become available. All prices include Postage. Compare our prices with similar products in the big stores, which cost well over £100. EUROPE'S LARGEST STOCKIST OF TV GAME COMPONENTS. 14 Station Road, New Barnet, Herts EN5 1QW Tel: 01-440 7033/01-441 2922 ELECTRONICS VOLUME 14 No. 16 DECEMBER 1978 CONSTRUCTIONAL PROJECTS P.E. V.D.U. SYSTEM -2 by A. A. Berk, B.Sc., Ph.D. Interfacing, expanding the basic V.D.U., hardware for cursor control 1228 ANALOGUE COMPUTER -4 by P. J. Kronis, B.Sc. Programming and special circuits (conclusion of series) SAFETY PLUG by T. Sutherns Mains check module GUITAR SOUND MULTIPROCESSOR -1 by M. A. Sawicki M.Sc.(Eng.) and A. Kowalewski Pre -amp, delay block and summers RADIO CONTROL FAILSAFE by A. Jenkins No lost or damaged models 1236 1240 1246 1260 R.C. MOTOR CONTROL by P. A. Dakin 1262 Full Power solid state controller GENERAL FEATURES FARNBOROUGH '78 by P. Preston 1234 Avionics' latest gear MICROBUS by A bi-monthly focus on micro's for the home constructor 1252 IMPEDANCE -2 by Toby Bailey and Bob Whitaker 1257 Voltage and Current generators INGENUITY UNLIMITED Binary to 7 -Segment Decoder-Sub-Octave Generator-Combination Lock-One Arm Bandit Mod-Coincidence/Error Detector-CMOS Burglar Alarm SEMICONDUCTOR UPDATE by R. W. Coles 1266 A look at some recently released devices 1270 NEWS AND COMMENT EDITORIAL MARKET PLACE 1227 New products 1231 NEWS BRIEFS Mersey Micro Club-Late Night Viewing 1239 1265 Hey! 64K! POINTS ARISING Chromosonic Catalogue-Sound Track Monitor-TV games centre SPACEWATCH by Frank W. Hyde USSR and Venus, Meteorites, New Planetoid, 100 Days in Orbit, Communications Satellites, 1241 Landsats Survey the Sea, Space Facts, Design for a Man -Made City in Space 1242 1245 SPECIAL OFFER -10 + 10 Amplifier Kit READOUT 1254 A selection of readers' letters INDUSTRY NOTEBOOK by Nexus 1271 What's happening inside industry PATENTS REVIEW Thought provoking ideas on file at the British Patents Office INVENTORS COMPETITION RESULTS BREADBOARD EXHIBITION Our January issue will be on sale Friday, 8 December 1978 1272 1278 1278 (for details of contents see page 1259) IPC Magazines Limited 1978. Copyright in all drawings, photographs and articles published in PRACTICAL ELECTRONICS is fully protected, and reproduction or imitations in whole or part are expressly forbidden. All reasonable precautions are taken by PRACTICAL ELECTRONICS to ensure that the advice and data given to readers are reliable. We cannot, however, guarantee it, and we cannot accept legal responsibility for it. Prices quoted are those current as we go to press. Practical Electronics December 1978 1209 BD1-The Connoisseur's Budget Choice BD1 Kit & lionnolv wet' Completed BD1 Assembly 1 op 11 - - The Connoisseur BD1 transcription turntable is a precision engineered product designed to provide top grade performance at a moderate cost. Simplicity is the main feature of this unit giving excellent performance and reliability. A slow speed synchronous motor is used and because of its construction the hum field is very low, so that even the most sensitive of pickups can be used, including the Connoisseur SAU2 or the SME 3009 Series II. Speed change is achieved by a press button unit at the rear of the platform which automatically moves the drive belt from one pulley groove to the other whilst the turntable is turning. The BD1 turntable kit can be assembled by the home constructor within the hour and when completed will give top quality performance. No soldering is required. Complete the unit with a modern BD1 plinth and cover. The plinth is finished in walnut veneer and fitted with spherical, anti -vibration feet. Add to this a strong Acrylic, bronze cover, hinged with 2 -position lid stay and you have a first class turntable at a budget price! BD1 with Plinth, Cover & SME Arm. Write for further details to: A. R. Sugden & Co. (Engineers) Ltd. Manufacturers of Connoisseur Sound Equipment, Connoisseur Works, Atlas Mill Road, Brighouse, West Yorkshire HD6 1ES Telephone: Brighouse (0484) 712 142, Telex: 517144 SugdenCrighouse, Telegrams & Cables: Connoisseur Brighouse. Connokno° We can help you See and Solve your problems PE SUSTAIN UNIT HON ELIGHT Universal Portable Inspection Light The shadowless Honelight utilises the principle of optical fibres, in a tube of virtually unbreakable material, insulated, transparent and resistant to alcohol. It gives all-round illumination to otherwise inaccessible confined spaces and corners. Simple, lightweight and practical (weight with batteries 40 grammes approx.). Suitable for all professions-Electronics, Radio/TV-machines of all types. Also useful in the realm of Medicine: general and specialised. Dentistry. Veterinary etc. 1 Desoldering Tool "SPECIPROD" V (The smallest de -soldering pump available). BEST COMMERCIAL MODELS. COMPLETE KIT - £7.95* ALL HIGH QUALITY COMPONENTS AS SPECIFIED. IWO DESIGNER APPROVED. WWII - ........ "..,.... 00 ,,,. a , .... if Complete set of semiconductors 0 LP1186 Tuner Head - tuner Glass fibre PCB, printed with component locations ORION Complete set of semiconductors Glassfibre PCB, printed with component locations FERRANTI £4.99 E9.60 £2.45 £9.40 £3.50 BUY FROM THE SPECIALISTS! We con supply any Ferranti semiconductor device at very competitive prices. Send SAE for our data sheet & price list. TONE BOOSTER (Everyday Electronics Sept. 1978) V e, in The Tone Booster cuts out that dead, muddy sound and brings your guitar to life! Emphasises harmonics without reducing the low notes to give your guitar a clean ° penetrating tone. Complete kit of all parts as specified £3.30* PE TV SOUND SEPARATOR lio pl Comete set of semiconductors £2.30. High quality glass fibre p.c.b. £1.00. I - Special Products Distributors Limited, 81 Piccadilly, London W1V OHL 1210 I` la /tat" -a . amplifier Literature and general catalogue available on request from Tel 01-6299556 BUILD A SUSTAIN UNIT EQUAL TO THE \ Semiconductors Three Sizes. "Maxi Super" length 37cm, nozzle diameter 2mm. "Maxi Mini- length 22cm, nozzle diameter 1.5 mm. "Maxi Micro" length 16cm (diameter body 12mm, nozzle diameter 1.5mm). IP .-.. 0AIO (Operates from 2-1-5 volt batteries). High precision manufacture de -soldering pump. Available three sizes for all de -soldering requirements. Chromed interior, nickel pump, teflon nozzle. (P.E. OCTOBER 1977) Cables Speciprocl London W1 Murata filters: SFE6.0MA 35p. CDA6.0MC 35p. P & P 15p per order. Orders over £5 post free. All devices are top grade, brand new and to full manufacturer's spec. We do not sell seconds or rejects. Send S.A.E. for our data sheet and price list. Prices do not include VAT-odd 8% to items marked, and 12,1% to all others. callers by DAVIAN ELECTRONICS (Mailappointment order, only). 13 Deepdale Avenue, Royton, Oldham OL2 6XD Practical Electronics December 1978 NOT EVERY CABLE HAS A LABEL -\10 Everyone who works with electricity needs to know at some time or other what's going on inside the cable he's handling. What voltage. What current. What resistance. Not knowing the answers, or worse still having inaccurate answers, can make life difficult, even terminal. Eagle Test Equipment gives the right answers The range covers general multimeters, high voltage probes, clamp meters, insulation testers. Here are just four. Send the coupon for details of all the rest. KEW 7 Multimeter EM 1200 Multimeter K1400 Multimeter 1000 OPV. DC volts up to 1000, DC amps up to 100 mA. AC volts up to 1000. Resistance up to 150 Kohms. Pocket size. 100,000 OPV. Taut band 20,000 OPV. DC and AC volts up to 5000. DC and AC amps up to 10. Resistance up to 20 "Off' damping. Complete with leads & battery. R.R.P. £6.95 ex. VAT. movement. Overload protection. Reversible DC polarity. AC amps: 15, AC volts to 1500. DC amps up to 15, DC volts to 1500. Resistance up to 200 megohms. R.R.P. £49.95 megohms. "Off" damping. Overload protection. R.R.P. £68.00 ex. VAT. EM10, 20 & 30 Multimeters 10,20 & 30,000 OPV. All with antiparallax mirror scale. DC volts to 1000 (1200 for EM30). DC amps to 250 mA (600 for EM30). AC volts to 1000 (1200 for EM30). Resistance up to 6,5 and 60 megohms respectively. R.R.P.'s EM10 £12.40 EM20 0 £16.40 EM30 £18.95 ex. VAT. ex. VAT. Test Equipment: EAGLE Please send me details of your complete range of Test Equipment. Name Company Address Precision Centre, Heather Park Drive, EAGLE INTERNATIONAL Wembley, Middlesex HAO 1SU. Practical Electronics December 1978 PE1 1211 GREENWELD 443 Millbrook Road Southampton 501 CDHX Tel. (0703) 772501 All prices quoted include VAT. Add from schools, etc. (Minimum invoice 25p Ult/BFP0 Postage. Most orders charge £51. Export/Wholesale enquiries despatched on day of receipt. SAE with welcome. Wholesale list now available enquiries please. MINIMUM ORDER for bone -fide traders. Surplus comVAL UE f1. Official orders accepted ponents always wanted. EXPERIMENTERS CALCULATOR Based on the C500 chip, this pack of parts enables the more experienced constructor to make an 8 digit 4 function calculator. The comprehensive data supplied includes full size layout of PCB required, types of suitable display and keyboard that can be used etc. Components included in the pack are C500 calculator chip, driver IC. all components for inverter/clock circuits, R's C's etc. All for only £3.50. W847 Low profile PC mntg 10 x33x2Omm 6V coil. SPCO 3A contacts. 93p W832 Sub. min type, 10019x lOmm 12V coil DPCO 2A contacts £1.15 W701 6V SPCO 20x30x25mm Only 58p 1A contacts W817 11 pin plug in relay, rated 24V ac, but case and instructions. Only £7.95 + 55p p & p. BC182B OFFER Special Offer for quantity users 1k .035 VAT 5k .032 VAT. Price negotiable on 10k Approx 70k available. DIODE SCOOP!!! quantity of untested, mostly unmarked glass silicon diodes. Testing a sample batch revealed about 70% useable devices - signal diodes, high voltage rects and zeners may all be included. These are being offered at the incredibly low price of C1.26/1000 - or a bag of 2500 for £2.25. Bag of 10.000 £8. Box of 25,000 £17.50. Box of 100,000 E60. works well on 6V DC. Contacts 3 pole do rated 10A. 95p W819 12V 1250R DPCO IA contacts. Size 29 x22 x 18mm. min plug-in type 72p W839 50V ac 124V DC) coil. 11 pin plug in type. 3 pole c/o 10A contacts Only 85p W848 Open construction mains relay. 3 sets 10A c/o contacts. Et .20 Send SAE for our relay list - 84 types listed and illustrated. AMPLIFIER KIT £1.75 Mono gen. purpose amp with tone and Vol/on-off controls. Utilizes sim. circuitry to above amp. Output 2W into 8 ohms. Input matched for crystal cartridge. 4 transistor circuit. Simple to build on PCB provided. Can be either battery or mains operated. (For mains powered version add £2.20 for suit- transformer.) Blue vinyl covered aluminium case to suit (W372) £1.30 able STEREO AMPLIFIER CHASSIS £5.50 Complete and ready built. Controls: bass, treble, volume/on-off, balance. 8 transistor POLYTHENE SHEET Size 36 sockets and knobs free!! TMS4030 RAM 4096 bit dynamic RAM with 300ns access time; 470ns cycle time: single low capacitance high level clock Vp; Fully TTL compatible; Low power dissipation. Supplied with data £2.75 MISCELLANEOUS IC's Supplied with data if requested. MC3302 quad comp. 120p; 710 diff comp. 1T0991 x 18" 200g. Hundreds of uses around the home. 100 sheets for £1.50. Box of 1500 for £19. PC ETCHING KIT MK III Now contains 200 sq. ins. copper clad board, 1lb. Ferric Chloride, DALO etch -resist pen, abrasive cleaner, two miniature drill bits. etching dish and instructions. £4.25 BUY A COMPLETE RANGE OF /r3!'lease quote your number when ordering-`I[' I MINIATURE °:j 0 SOLDERING IRONS AND ACCESSORIES stereo pre -amp 76p; MC1469R voltage reg £1.50; UPC1025H audio £3.50; 575C2 audio £2.88; TDA2640 audio £2.92; SN75110 dual line driver 70p; MC8500 CRCC gen POA 18 WATT IRON Inc. No.20 BIT SPARE BITS STANDS SOLDER: SAVBIT 20' SAVBIT 10' LOWMELT 10' I.C. DESOLDERING BIT BIT SIZES: Special purchase of these 0.1" pitch doublesided gold-plated connectors enables us to offer them at less than one-third of their original list price! 18 way 41p; 32 way 72p; 40 way 90p. HEAT SINK OFFER Copper TO5 sink 17mm die x 20mm. 10 for 40p; 100 for 03; 1000 for f26 74 SERIES PACK Selection of boards containing many different 74 series IC's. 20 for £1; 50 for£2.2; 100 for £4. THE NEW 1978-9 GREEN VV EL CI CATALOGUE Quantity prices for bulk buyers Bargain List Supplement Reply Paid Envelope Priority Order Form VAT inclusive prices PRICE 30p + 1 5p POST 1212. extra. 22p - 44p 65p 9p 4p 9p 9p £3 . 25 52p 26p 65p 88p No. 19 (1.5 mm) No. 21 (4 5 mm) 0 ' No. 20 (3 mm) No. 22 (6 mm). 0 THESE PACKS WILL 86-88 Union St Plymouth PL13HG HELP YOU o o S. R. BREWSTER Tel: 0752.65011 TRADE ENQUIRIES WELCOME * SAVE ON TIME -No delays in waiting for parts to conic or shops to open! Random flASHERIINIT * SAVE ON MONEY -Bulk buying means lowest prices -just compare with others' Act, * HAVE THE RIGHT PART -No guesswork or substitution ) vy,,edieady,.' use Complete with three 100 wat t coloured lamps hat flash independently random ALL PACKS CONTAIN FULL SPEC. BRAND NEW, MARKED DEVICES- SENT BY RETURN OF POST. VAT INCLUSIVE PRICES. I TWIN BANK 6 LIGHT mps) LENGTH 14 t inches UNI T necessary! £19 (44. f11.35 ES K002 Extended range, 22pF to 0.10F. 330 al es £490 E.ti. 600 MASTER UNIT WATTS PER 1(003 Polyester capacitors, 10 each of these values: 0.01, 0.015, 0.022, 0.033, 0.047. 0068, 0.1, 0.15, 0.22, 0.33, 0.47pF. 110 CHANNEL altogether for £4.75 I. 0 0 0 K004 Mylar capacitors, min 100V type. 10 each all values from 1000pF to 10.000pF. Total 130 for E3.75 K005 Polystyrene capacitors, 10 each value from 10pF to 10,0005F, E I 2 series 5% 160V. Total 370 for £1230 1(008 Tantalum bead capacitors. 10 each of Ws the following: 0.1, 0.15, 0.22, 0.33, 0.47, 0.68, 1, 2.2 3.3, 4.7, 6.8, all 35V; 10/25 15/16 22/16 33/10 47/6 100/3. Total 170 tants for £1420 1(007 Electrolytic capacitors 25V working. 't7 tir,t4 L11.35 Sound t o Light 0.35 4api Fitting Bc. 95 K001 50V ceramic plate capacitors, 5%. 10 TYPE (less jampi A SPOT .7951 c!! '; ro cr 54"t UNIT TYPE B 3 BANK (Less Lamps) small 11.2psical size. 10 each of these popular .2, 4.7, 10, 22, 47, 1000. Total values: C14111161111111Eittingi E S Fitting f2.3°"" f2.30`" 0 70 for £3.50 K008 Extended range, as above, also includ- TWIN BANK 12 LIGHT 220. 470 and 10008F. Total 100 for 90 1(021 Miniature carbon film 5% resistors, UNIT CR25 or similar. 10 of each value from lOR to 1M, El2 series. Total 610 resistors, £8.00 501C041 FEATURES INCLUDE: p Discount Vouchers each inc.v.a.t. £3 . 78 From your Local Dealer or Direct from Manufacturers of each value 22pF to 1000pF. Total 210, EDGE CONNECTORS ( (8) RETAIL PRICE POSTAC 40p; ZN1034E precision timer £2.25; LM711 Dual diff comp 85p; LM1303 dual 0 COMPONENTS AND circuit gives 2 watts per channel output. Just needs transformer and speakers for low cost stereo amp. Suitable metal cabinet (W3741 £2.00 - or buy the amp. case and transformer for £10.00 and get DIN speaker 0 0 AIR FRESHENER KIT As featured in Nov EE. Complete kit inc. We have been fortunate to obtain a large RELAYS 4P1, MIGHTY MIDGETS 1(022 Extended range, total 850 resistors from 1R to 10M E8.30 Zener diodes. 400mW 5% BZY88. etc. 10 of each value from 2.7V to 36V E24 series. Total 280 for £15.30. 1(042 As above but 5 o6 each value £8 70 44444 Length 31i f_1:19 ECllIng - 100 WATT SPOT LAMPS RED YELLOW GREEN BLUE ..tVcAPAO E4.50 50 each CLEAR TRANSFORMERS 3 lames E.S. Fittin, BC Fit t inq km Es (less lamps) rim Gn All mains primary: 12-0-12V 50mA 86p; 100mA 95p; 1A £2.50. 6-0-6V 100mA 86p; ii -A £2.40. 9-0-9V 75mA 85p; 1A £2.10. Multitapped type 0-12-15-20-2430V, lA £3.96; 2A £5.35; 3A £8.90.20V 21A £3.90; 25V 11A £2.25; 12V 8A £4; 24V 5A f7.50; 0-22-34-41V 4A £7.50; ALBEN ENGINEERING CO. LTD., twice f2.00. BURNLEY. LANCS. TelBurnley 20940 20V N 300mA twice E2.50; 12V ei. 250mA it PRICES itiCiuoF v I onori lo I end /OST U1,4111 PACKING n..i Send 20 for illustrated leaflet & ries lie DEPT PE THE CRESCENT WORSTHORNE, Practical Electronics December 1978 IT 7-1.744r77494 7495 7496 7497 78 74194 105 85 74195 57 .74196 189 74197 95 99 85 134T 4057 2570 4059 480. LINEAR IC'S 4056 MC1303 84811) 75 MC1304P 280 4060 115 702 709C 14 pin 35 MC1310 149 7402 74100 119 74198 150 4061 2380 35 CARDIFF RCAD, WATFORD, HERTS., ENGLAND 48 MC1312P 195 7403 74105 62 75150 110 4062 999 710* 45 MC1488* 7404 85 74107 29 75491 75 4063 110 723* 99 MC1489* 7405 90 74109 54 75492 SO 4066 68 733* 22 MC1495* 395 7406 74110 54 4067 380 741C* 8 pin ALL DEVICES BRAND NEW, FULL SPEC. AND FULLY GUARANTEED. ORDERS 70 MC1496 92 7407 74111 68 4068 22 747C* DESPATCHED BY RETURN OF POST. TERMS OF BUSINESS: CASH/CHEQUE/ 36 MC1710* 79 7408 74112 88 CMOS* 4069BE 20 748C* 150 MC3401 P.O.s OR BANKERS DRAFT WITH ORDER. GOVERNMENT AND EDUCATIONAL 7409 15 4070 69 32 753 74116 198 4000 159 MC3340P* 17 4071 150 7410 74118 83 4001 21 810 INSTITUTIONS' OFFICIAL ORDERS ACCEPTED. TRADE AND EXPORT INQUIRY 335 MC3360P 8038CC* 4000602 17 120 74119 119 .7411 21 4072 WELCOME. P&P ADD 30p TO ALL ORDERS UNDER £10.00. OVERSEAS ORDERS 580 AY -1-0212 MFC40008 105 4073 85 7412 74120 12615 4 21 POSTAGE AT GUST. AIR/SURFACE. 660 MFC6040* 97 74121 4007 18 4075 7413 23 AY -1-1313 SEND 45p FOR OUR CATALOGUE. 305 MK5O398* 635 7414 51 74122 46 4008 87 4076 85 AY -1-1320 208 AY -1-5050 MK50362* 650 7416 30 74123 48 4009 50 4077 40 VATExport orders no VAT. Applicable to U.K. Customers only. Unless stated otherwise. all price. AY -1-5051 145 50 4078 MM2102-2* 170 7417 30 74125 38 4010 21 are exclusive of VAT. Please add B% to devices marked *. To the rest add 121%. 18 4081 100 16 74126 57 4011 20 AY -1-6721/6 195 MM2112* We stock many more items. It pays to visit us. We are situated behind Watford Football 7420 18 4082 7421 29 74128 74 4012 21 AY -3-8500* 385 MM2112-2* 295 Ground. earest Underground/BR Station: Watford High Street. Open Monday to Saturday AY -3-8710* 850 42 MM57160* 620 7422 24 74132 73 4013 4085 74 9.00 am -6.00pm. Ample Free Car Parking space available. AY -5-1224A* 260 NE518A* 210 86 4086 7423 27 74136 73 4014 73 89 4089 150 AY -5-1230* 490 NE555* 29 7425 27 74141 56 4015 POLYESTER CAPACITORS: Axial lead type. (Values are in pF) 560 NE55606* 45 4093 60 36 74142 269 4016 86 AY -5-1315 400V: 0.001, 0.0015, 0.0022, 0.0033 7ee; 0.0047, 0.0068, 0.01, 0.015, 0.018 9p; 0.022, 7426 630 AY -5-1317A d9 NE560* 325 4017 7427 27 74143 314 190 4094 0.033, 10p; 0.047. 0.068 14p; 0.10 15p; 0.15, 0.22 22p; 0.33, 0.47 39p 0.68 45p. 82 CA3011* 89 4095 105 NE561* 395 7428 35 74144 314 4018 1130V: 0.039, 0.15, 0.22 llp; 0.33, 0.47 19p; 0.68, 1.0 29p; 1.5 29p; 2.2 32p; 170 NE562* 48 4096 106 CA3020 7430 410 17 74145 65 4019 DUBILIER: 1000V: 0.01, 0.015 20p; 0.022 22p; 0.047 26p; 0.1 38p; 0.47 48p. 170 NE565A* 99 4097 372 CA3023 7432 25 74147 175 4020 120 80 NE566* 91 7433 180 40 74148 109 4021 4098 110 CA3028A* POLYESTER RADIAL LEAD (Values are in pF) 250V: FEED THROUGH 240 CA3035 88 4099 148 NE567* 7437 170 30 74150 99 4022 0-01, 0-015, 0-022, 0-027 Sp; 0-033, 0-047, 0-068, 0-1 7p; 0-15 12p; CAPACITORS 190 NE571* 20 4160 109 CA3043 450 64 4023 7438 33 74151 0-22, 0-33 13p; 0-47 15p; 0-68 18p; 1-0 24p; 1-5 27p; 2-2 31p. 100pF 350V 8p 71 RAM2102-2* 170 66 4161 7440 17 74153 64 4024 109 CA3046 200 CA3048 19 RC4136D* 120 4025 7441 74 74154 96 4162 109 ELECTROLYTIC CAPACITORS: Axial lead type (Values are in pF) 500V: 10 40p; 47 58p; 175 ROM2513* 595 7442 68 74155 53 4026 180 4163 109 CA3075 250V: 100 85p; 50 11p; 70 SG3402 45 4174 110 CA3080E* 295 7443 115 74156 80 4027 63, 100 27p; 50V: 1.0 7p. 50, 100, 220 25p; 470 50p; 1000, 2200 68p; 40V: 22, 33 7p; 190 SN76003N 81 175 7444 112 74157 67 4028 4175 99 CA3081 100 11p; 3300 62p; 4700 1141; 35V: 10, 33 7p; 330. 470 32p; 1000 49p; 25V: 10, 22, 47 Bp; 210 CA3089E SN76013* 140 7445 94 74159 210 4029 99 4194 108 80, 100, 160 Sp; 220, 250 l 13; 470, 640 299; 1000 27p; 1500 399; 2200 41p; 3300 52p; 375 SN76023N 50 4408 720 CA3090AQ 7446 94 82 4030 140 74160 4700 549; 16V: 10, 40, 47, 68 7p; 100, 125 8p; 330, 470 16p; 1000, 1500 20p; 2200 34p; 7447 200 SN76033N 205 4409 720 CA3123E 175 82 74161 92 4031 10V: 4, 100 Bp; 640 10p; 1000 14p. 85 SN76115N 100 4410 720 CA3130* 215 7448 56 74162 92 4032 70 CA3140* TAG -END TYPE: 70V: 2000 98p; 4700 1213p; 50V: 3000 75p; 40V: 4000 7 2500 85p; 145 4411 225 7450 17 74163 92 4033 SN76477* 996 752 SN76227 26V: 4700 48p; 2000 37p; 40V: 2000 + 2000 95p; 325V: 200 + 100+ 50 + 100 190p; 0p. 115 196 4412F1650 ICL7106E* 7451 17 74164 105 4034 111 7453 17 74165 105 4035 4412F1380 ICM7205* 1150 TAA621AX1 228 452 TAA960 OPTO 325 4415F 795 LD130* 300 TANTALUM BEAD CAPACITORS POTENTIOMETERS (AB or EGENI 7454 17 74166 161 4036 ELECTRONICS* 30 TBA120S 35V, 0 1pF 0.22.0 33 0 47 0 68 100 4415V 796 LM301A 70 Carbon Track, 5W Log & 5W Unix. values 7460 17 74167 4037 240 TBA540Q 10 22,,F 33 47 68 25V: 5 .0 15000. 1K & 2K Ilin only) Single 7470 28 74170 230198 4038 108 4419 280 LM304 27p LEDs plus clip 13 110 TBA550Q 330215 7472 25 74172 625 4039 320 4422 545 LM308 26V: 1.5 18V: 10pF 13p each 5x0.2M0 s$ngle pang 27p TIL209 Red TIL211 Gm 18 LM318 195 105 250 560-26) single gang D/P switch 4040 TBA64113)(11 60p 7473 32 74173 170 4433 1180 47,100 40p. 10y: 220. 33, 47 6V: 79 TBA851 80 4435 825 LM324* 180 7474 70p TI L212 Yellow 22 27 74174 87 4041 47,68,100,3V: 68, 100pF. 20p each 560.2M0 dual gang stereo .2" Red 15 80 TBA800 75 4440 1275 LM339* 90 7475 38 74175 87 4042 MYLAR FILM CAPACITORS .2" Yellow Greenl9 95 TBA810S 94 4450 295 LM348* 99 7476 4043 36 74176 75 6p SLIDER POTENTIOMETERS 100V: 0 001 0.002.0.005. 0 OlyF Spare Cl 2 88 LM379* 375 TBA820 70 7480 48 74177 78 4044 4451 295 0 015 002.004 0 05. 0 056vF 7p 0-25W log and linear values 60mm LS400ips 255 95 TBA920Q 260 7481 86 74178 102 4045 145 4490F 695 LM380 560-50060 single gang 1 1 p o 1,F 015 0219p SOV: 0 47,E 70p TIL307 145 TDA1022* 696 575 4046 128 LM381 7482 69 74180 85 4490V 525 1060-50060 dual gang 80p OR12 320 87 4501 248 TDA2020 7483 72 74181 165 4047 17 LM38 IAN CERAMIC CAPACITORS: 509 6 43 Sell Stock Graduated Beasis 22p 2N5P77 7 5 125 TL071CP* 4048 58 4502 120 LM382 1/484 95 74182 70 0 5pF to lOnF 36 each 7 Seg Displays 48 4503 50 TL081CP* 52 7485 106 74184 13950 4049 69 LM1458* 51-1F 22nF 33nF 47,4 4p each TI L312 C An 3°105 PRESET POTENTIOMETERS 48 4506 4050 60 TL082CP* 96 7486 31 74185 135 51 LM3900* 0 Iv' Sp TIL313 C Cth 3'105 Vertical & Honzontal 72 4507 7489 210 74188 275 4051 70 TL084CP* 130 55 LM3909N* TIL321 C An 5" 1115 0-1W 500 5M0 Miniature 72 4508 298 LM3911* 4052 125 UAA170 198 SP 7490 33 74190 115 POLYSTYRENE CAPACITORS TIL322 C Cth 5"115 7491 0.25W 1000-3-3M0 Hom 104 75 74191 105 4053 72 4510 750 ZN414 90 99 M252AA* 10pF to 1nF Elp: 1 5nF to 47nF 10p. 109 D1704 C Cth 3" 99 0 25W 2000-4-7M0 Van 38 74192 105 1054 110 4511 796 ZN424 130 7492 150 M253AA* SILVER MICA (Values m pF) 3-3. 4-7. DL707 C.A. 3" 99 4055 128 4512 MC724* ZN425E* 7493 32 74193 105 175 375 98 6 8 10. 12 18 22.33 47 50. 68. 75 FND357 120 RESISTORS - Erie make 5% Carbon BF 184* 30 0C41* 48 ZTX311 17 2143563 20 132 85 100, 120. 150.220 Bp each MAN3640 175 Miniature High Stability Low noise BF194 24 2N3614*169 32 ZTX314 10 0C42* 250.300 330 360 390 600.82016p each LCD 3} digit 925 AC117* 35 BC1 70 100 17 8E195 RANGE VAL 99 10 0C43* 40 2N3615*135 55 ZTX326 1000, 1800.2000.2200 204 each AC125* 20 BC171 5W 2-20-4 7M E24 1.59 11 8E196 20 2N3663 ip 31 ZFX341 10 0C44* 24 AC126* 201 BC172 5W 2-20.4 7M 10 8E197 612 2p 1.6p SWITCHES* 10 0C45* 13 20 ZTX500 CERAMIC TRIMMER CAPACITORS 2N3702 10 2A 250V AC127* 20 BC177* 17 BF198 1W2 -20.10M 5p 49 TOGGLE 612 18 0C46* 2 7pF 4 15pF 6-250F. 8- 30pF 20p 14 2143703 11 28 zi.Z1xx5b0021 SPST 28p AC128* 20 2% Metal Film 100-1M0 BC178* 17 8F200* 6p 28 0070* 10 4P DPDT 19 2143704 38p 24 MINIATURE TYPE TRIMMERS AC141* 17 BC179* BF224A 18 0071* 1% Metal Film 510-1M lop 15 25 ZTX503 2N3705 11 BP 4 pole on/off 54p AC141K* BC182 5-6pF 3 10pF 10-40pF 22p 38 9 8E244 100 price applies 10 Resistors of each 13.P. 24 0072* 25 30 ZTX504 2N3706 10 SUB -MIN TOGGLE AC142* BC182L S 25pF 5 45pF 60pF 88pF 30p 24 10 8E256* 'Mt mixed values 50 0076* 25 2N3707 36 ZTX531 10 SP changeover 59p 9 BF257* AC142K* 38 BC183 26 0077* 75 ZTX550 25 2N3708 10 SPST on/off 54p COMPRESSION TRIMMERS PE DIGITAL THERMOMETER AC176* 18 BC183L 10 8E258* 26 0c79* 76 214526* 58 2N3709 10 DPDT 6 tags 70p 3 4006 10 80pF 25 1900E 25p AC187* 20 BC184 9 BF259* All parts available. 30 0081* 35 2N3710 18 28 2N696* DPDT Centre off 79p 100-500pF 38. AC188* 20 BC184L 10 8E394 Send SAE for list. 21 10 DPDT Biased 115p 22 0082* 45 214697* 2N3711 ACY17* 35 8C186 21 6E594 SLIDE 250V: 40 0083* 48 2N698* 39 2N3715* 250 ACY18* 40 BC187* 28 8E595 1A DPDT 14p 44 214899* 39 2N3772*170 38 0084* JACK PLUGS SOCKETS ACY19* 40 1A DP cover 25 0C122* 48 2N708A* 19 2143773* 288 15p BC212910BFR39 Screened Plastic open moulded in line ACY20* 40 BC212L BFR40 DPDT 13p 25 0C123* 48 2N707* 50 2N3819 22 chrome body metal with couplers ACY21* 35 BC213 9 BFR79 28 0C139* 85 2N708* 19 2N3820 32 2.5mm 12p 8p break tip ACY22* 40 8C213L 11 2044g-roW4P BER80 28 0C140* 85 2N914* 32 2143823* 65 3.5mm 15p 81, contacts S tog loaded ACY28* 40 BC214 9 BFX29* 28 OC141* 85 2N915* 27 2N3824* 70 MONO 15p 23p 13p 20p 189 S ST on/off eo. ACY39* 78 BC214L 10 BFX81* 130 0c170* 30 2N9666* 40 2N918* STEREO 18p 31p 15p 24p 22p SPDT coveresi ACY40* 48 BC30713 14 BFX84* 24 0C171* 40 2N920* 61 1143903 lie DPDT 6 Tag asp ACY44* 39 BC308 13 BFX85* 24 0C201* 75 2N930* 18 2N3904 18 AD140* 69 BC328 13 BFX86* 2N3905 18 85 2N961* 81 28 0C202* SWITCHES * Miniature Non -Locking PLUGS SOCKETS In Un DIN 12 BFX87* AD149* 70 BC338 23 OC203* 85 2141131* 22 2N3906 17 AD161* 42 BC441* 30 BFX88* 24 0C204* 85 2141132* 22 2N4037* 52 119 7p I PIN Loudspeaker 18p Push to Make 15p Push to Break 25p AD 162* 42 BC461* 30 BFY18* 50 TIP29 17 ROCKER (white) 10A 250V 3 4. 5 Pin Audio 134 Se 204 43 2N1302* 35 2N4058 18 BFY50* SP changeover centre off 25 BC477* 17 30p AF114* 20 TIP29A 44 2N1303* 50 2N4061 AF115* 25 BC547 11 ROCKER: (black) on/off 10A 260V BFY51* 20 TIP29C 23p 149 60 2141304* 50 2N4064* 120 149 CO -AXIAL ITV) lap BC548 ROCKER: Illuminated (white) AF116* 25 11 BEY52* 20 TIP30 47 2N1305* 28 2144236* 145 PH ONO 159 Lights when on: 3A 240V FP single 62p AF117* 25 BC549 11' BFY71* 2144289 20 47 2N1306* 35 20 TIP30A 94 Bp double ROTARY: (ADJUSTABLE STOP) 1 pole/2-12 AF118* 65 BC557 13 13SX20* 65 18 TIP3OB 64 2N1307* 50 2N4859 Msorted colours 12p etal Screened 10p 3-wey way 2p/2 -6W 3p/2 -4W 4p/2 -3W 41p AF121* 20p 12 BSY65* 48 BC558 30 TIP30C 85 2N1308* 46 ROTARY: Mains 250V AC. 4 Amp 57 BSY95* 65 iscuo* 2141613* 23 2N5136 42 45P AF124* 25 BANANA 4rnrn 11p AF125* 35 6CY34* 16 BSY95A* 25 TTIPP3311A** 440 2N1671* 190 2N5138 20 12p 10p AF127* 35 BCY39* 80 BU105 10p OIL SOCKETS * (Low Profile -Texas) 140 TIP318* 40 2N167113*195 2N5179* 60 ?mm 7p 8 pin Op; 14 pin 12p; 16 pin 13p; 18 pin 20p; AF139* 7p 35 BCY40* 78 B U205* 190 TIP31C* 66 2N1893* 28 2145180* 60 WANDER 3mm 75 BU208* 225 TIP32* 20 pin 27p; 24 pin 30p; 28 pin 42p; 40 pin 55p. 8p AF178* 70 BCY43 8p 45 2 N 1986* 60 2N5191* 65 AF180* 22 E5567 70 BCY58* 65 TIP32A* 49 2N2160* 105 2N5305* 24 AF186* 50' 8CY59* 22 MD8001*158 TIP32B* 70 2N2217* 48 2145457 32 AF239* 42 BCY70* 15' ME4102 10 TIP32C* 70 2N22184* 31 2N5458 32 ASY26* 40 BCY71* 17 ME6002 _14 T1P33* 32 Announcing DM900 - The Digital Multimeter 80 2N2219A*22 2145459 ASY27* 45 BCY72* 17 MJ400* 90 TIP33A* 80 2 N2220A* 26 2N5485 32 with a difference - It measures Capacitance too. 7400 7401 MAIL ORDER, CALLERS WELCOME. Tel. Watford 40588/9 13 13 14 14 14 18 38 38 17 17 15 20 17 30 I TRANS STORS 1 DIGITAL MU LTI M ETE R (as published in E.T.I. August 19781 Throw away your analogue meters, here's digital accuracy at only half the price of an equivalent commercial Multimeter. The DM900 is a 34 digit multimeter with an 0.5in LCD. display incorporating: 5 AC & DC Voltage ranges; 6 Resistance ranges. 5 AC & DC Current ranges: 4 Capacitance ranges. The prototype accuracy is better than 1%. This is a unique design using the latest MOS ICs and due to the minimal current drain, is powered by only one PP3 battery. There is also a battery check facility. DM900 is an attractive hand-held lightweight device, built into a high impact case with carrying handle and has been ingeniously designed to simplify assembly. Never before have all these features been offered to the electronics enthusiast in a single unit. Price: f54.50° only (p&p insured add 1800 Send SAE for leaflet. Ready Built and tested units £78.50' including probes and carrying case (P&P insured 80p) (Demonstration on at our shop) 1141 Practical Electronics December 1978 PE VDU SYSTEMS 2145777* 45 3C107* 9 880CY17185** 3C107B* 10 622 BD121* 95 9C108* BC1088* 12 BD123* 98 12 130124* 115 Convert your TV into a VDU by' BC108C* 5C109* 9 D131* 38 using the new Thomson-CSF, BC1098* 12 B BD132* 38 2N2221* 23 2N2222* 20 96364. 16 lines by 64 characters, text refreshment, cursor management on TV screen, line erasing, line end erasing. Compatible with any computing system. 62 2142484* 30 80 2142646* 48 2142784* 55 40348* 101 43 2N2846* 140 40360* 2N2594* 39 40381* 45 48 2N2904A*22 40362* 50 2N2905A*20 40407* parts now available (send SAE for list) TV -CRT controller chip SF.F SFF 96364E AY-5-1013UART 71301 ROM SFC SFS80102 RAM 1K 74LS163 RAM MC1488 MC1489 SN75450 SN75451 SN75452 SN75454 £11.75° £4.50* £8.20. 2102 LF 2513 74LS132 81LS97 1 MHz crystal 14.318181MHz £1.60. E5.95. £0.95. £2.056 £0.95* f0.85. f0.90° £1.20. £0.70. £0.70* f2.25. £1.09 f3.23. £2.706 MJ491* 160 TIP33B* 100 MJ2955* 96 TIP33C* 1060 MJE340* 46 TIP34* 85 MJE370* 55 TIP34A* 85 MJE371* 60 TIP34B* 110 MJE520* 45 TIP34C* 110 MJE521* 65 TIP35* 219 BC109C* 12 80133* 43 MJE2955*99 TIP35A* 225 BC113 17 80135* 36 MJE3055* 70 TIP35C* 270 BC114 19 80136* 37 MPF102 30 TIP36A* 265 BC115 19 80137* 36 MPF103 36 TIP38C* 325 BC116 19 BD138* 36 MPF104 36 TIP41A* 63 BC117 15 BD139* 36 MPF105 36 TIP418* 73 BC118 19 130140* 36 MPF106 50 TIP42A* 64 BC119* 26 BD142* 59 MPF107 50 TIP42B* 82 BC134 19 80145* 198 MPSA05* 24 T1P2955* 63 BC135 20 80222* 60' MmPpr40162* 24 TillsP340355* 80 BC136 BC137 BC140* BC142* BC143* BC147 BC148 BC149 BC153 BC154 BC157 BC158 BC159 BC160 BC167A BC168C BC 169C 18 20 28 25 25 7 7 8 14 14 10 11 11 27 11 12 10 42 BD895A* 75 BD898A* 75 MPSA55 24 T1S44 BDY17* 195 MPSA56 24 T1S46 BDY60* 110 MPSA70 34 T1S50 BDY61* 165 MPSUO2* 58 TIS60 8E115* 22 MPSUO5 48 TIS62 25 MPSUO6 64 TIS74 BF154* 13F156* 8F167 8E173* BF177* BF178* BF179* BF 180* BF 181* BF182* 6F183* 29 MPSU52* 65 25 MPSU55* 53 25 MPSU56* 66 24 MPU131* 39 25 0C25* 30 0C26* 20 0C28* 30 0C29* 30 0035* 30 0C36* 120 150 99 160 80 99 TIS90 TIS91 ZTX107 ZTX108 ZTX109 ZTX300 ZTX301 ZTX302 27X303 ZTX304 36 45 45 47 45 45 47 18 22 2 N2297 45 2N2303*2N23644 451 2N2369* 15 2N2476* 125 2N2483* 28 40311* 40 50 40313* 125 40316* 40317* 40324* 40326* 40327* 40347* 85 52 85 52 2N2906* 18 40411* 289 2N2907* 20 40412* 83 2N2907A*22 40467*: 95 2N2926G 10 40576* 190 80 21429260 8 40594* 90 2142926R 8 40595* 65 2N2926Y 8 40603* 2N3011* 24. 40636* 125 2N3053* 20 40673* 68 2N3054* 49 2N3055* 55 2N3108 2N3121 2N3133 13 2N3135 18 2N3250 18 2N3252 11 11 39 /1 43 33 30 36 21 2N6027 40' Diodes 1N4148 4 CR033* 148 Zeners 400mw 2.7-33v 9 24 2N3442* 131 1213 YOUR COMPLETE RANGE OF ELECTRONIC HARDWARE.... BIMENCLOSURES MINI DESK BIMCONSOLES >Orange, Blue, Black or Grey ABS body incorporates 1.8mm pcb ALL METAL BIMCASES Red, Grey or Orange 14swg Aluminium removable top and bottom covers. 18 swg black mild steel chassis with fixing support brackets. BIM 3000 (250x 167.5 x68.5mm) £14.58 .------ Orange, Blue, Black or Grey ABS with 1mm Grey Aluminium guides, stand-off bosses recessed front cover held by screws into in base with 4 BIMFEET supplied. 1mm Grey Aluminium ..1.-' panel sits recessed with fixing screws into integral brass bushes. BIM 1005 (161 x 96 x 58mm) £2.18 BIM 1006 (215 x 130 x 75mm) £3.05 ALL METAL BIMCONSOLES All aluminium, 2 piece desk consoles with Colour Code A either 15° or 30° sloping fronts, sit on 4 self-adhesive non -slip rubber feet. Ventilation slots in base and rear panel for excellent cooling. 15° Sloping Panel MULTI PURPOSE BIMBOXES integral brass bushes. 1.8mm pcb guides incorporated and 4 BIMFEET supplied. BIM 4003 (85x56x28.5mm) BIM 4004 (111x71x41.5mm) BIM 4005 (161x96x52.5mm) Top Panel Base Off White Sand Blue Green Satin Black Gold LOW PROFILE BIMCONSOLES Orange, Blue, Black or Grey ABS body has ventilation slots as well as 1.8mm pcb guides and stand-off bosses in 30° Sloping Panel BIM7151 (102x140x51[28]mm) BIM7301 (102x 140x76(28) mm) £1067 B1M7152(165x140x51(28]mm) BIM7302 (165x140x76(28)mm) £11 44 BIM7153 (165x216x51(281mm) BIM7303 (165x183x102[28]mm) £12 61 BIM7154 (165x211x76(33) mm) BIM 7304 (254x 140x76 (281mm) £1382 B1M7155(254x211x76(331mm) BIM7305 (254x 183x 102 [281 mm) £15 36 base. Double angle recessed front panel with 4 fixing screws into integral brass bushes. 4 BIMFEET BI M7156 (254x287 x76(33] mm) B1M7306 (254x259x 102 (28j mm) £16 67 BIM7157 (356x211x76(33]mm) BIM7307 (356x 183x 102128 mm) £17 58 BIM7158 (356x287x76(331mm) BIM7308 (356x259x102(281mm) £18 55 ABS & DIECAST BIMBOXES 6 sizes in ABS or Diecast Aluminium. ABS moulded in Orange, Blue, Black or Grey. Diecast Aluminium in Grey Hammertone or Natural. All boxes incorporate 1.8mm pcb guides, stand-off supports in base and have close fitting flanged lids held by screws into integral brass bushes (ABS) or tapped holes (Diecast). Diecast Hammertone Natural ABS (50x60x31mm) N/A BIM5001/11 TBA TBA £1.46 £1.19 1100x50x25mm) BIM2002/12 E0.96 BIM5002/12 (112x62x31mm) BIM2003/13 £1.13 BIM5003/13 £1.78 £1.46 BIM2004/14 £1.35 BIM5004/14 £2.24 £1.82 (120x65x40mm) BIM2005/15 £1.52 BIM5005/15 £2.84 (150x80x5Omm) £2.28 BIM2006/16 £2.37 BIM5006/16 £3.94 £3.33 (190x 110x6Omm) Also available in Grey Polystyrene with no slots and self -tapping screws £1.18 £1.62 £2.19 supplied. BIM 6005 (143 x 105 x 55.5 (315] mm) £2.37 BIM 6006 (143 x 170 x 55.5 (31.5] mm) £3.08 BIM 6007 (214 x 170 x 82.0 (31.5] mm) £4.12 EUROCARD BIMCONSOLES Orange, Blue, Black or Grey ABS body accepts full or 'h size Eurocards, with bosses in the base for direct fixing. 1.8mm wide pcb guides incorporated and 4 BIMFEET supplied. 1mm Grey aluminium lid sits flush with body top and held by 4 screws into integral brass bushes. BIM 8005 (169x127x70(45)mm) f4.12 BIM 8007 (to be announced shortly) BIM 2007/17 (112x61x31mm) £1.00 BIMTOOLS 12 VOLT BIMDRILLS MAINS BIMDRILLS Small, powerful 240V hand drill complete with 2 metres of cable and 2 pin DIN plug. Accepts all tools with 1mm, 2mm or .125" dia. shanks. Drills brass, steel, aluminium and pcb's. Under 250g, off load speed 7500 rpm. Orange ABS, high impact, fully insulated body with spring return on/off switch £10.53 Mains Accessory Kit 1 includes 1mm, 2mm, .125" twist drills, 5 burrs and 2.4mm collet £2.48 Mains Kit 2 includes Mains BIMDFI ILL as above, 20 assorted drills, mops, burrs, grinding wheels and mounted points, 1mm, 2mm, 2.4mm and .125" collets. Complete in transparent case measuring 230x130x58mm £22.14 2 small, powerful drills easily hand held or used with lathe/stand adaptor. Integral on/off switch and 1 metre cable. Mini BIMDRILL with 3 collets up to 2.4mm dia £ 8.10 Major BIMDRILL with 4 collets up to 3mm dia £13.60 Accessory Kits 1 have appropriate drills and collets as above plus 20 assorted tools. Mini Kit 1 - £15.12, Major Kit 1 - £19.44. Accessory Kits 2 have appropriate drills, collets plus 40 tools and mains 12V dc adaptor. Mini Kit 2 - £34.02, Major Kit 2 - £39.42. Accessory Kits 3 as appropriate Kits 2 plus stand/lathe unit. Mini Kit 3 - £45.36, Major Kit 3 - £50.76. BIM IRONS BIMDIPS Rapidly inserts and withdraws any 4-18 pin, .3" pitch DI L package without beding the legs. Adjustable metal jaws for MOS type devices grip the bottom of the leg for minimum strain. Will pick up IC's from a bench, a carrier or a pcb. £13.77. BIMSNIPS Precision made side cutters, spring action, ground steel fine pointed blades for intricate work. 5'4" long £3.34 on hook Type 30 General Purpose 27 watt iron with long life, rapid change element, screw on tip, stainless steel shaft and clip on hook. Styled handle with neon. £4.05 Type M3 Precision 17 watt iron, quick change tip, long life element, styled handle with clip £4.43 iBIMPUMPS 2 all metal desoldering tools provide high suction power and have easily replaceable screw in Teflon tips. Primed and released by thumb operation with in-built safety guard and anti -recoil system. BIMPUMP Major (180mm long) £7.99 BIMPUMP Minor (150mm long) £6.80 BIMSTATION Type PSU6 Soldering Iron Station complete with 6V, 6 Watt miniature iron having stainless steel shaft, quick change slide on tip and long life element. Station contains 240V/6V transformer, neon, coiled iron support and sponge iron tip cleaning pad. New product available shortly BIMTOOLS (Bimirons, Bimdrills, Bimsnips, Bimpumps, Bimdips) BIMACCESSORIES (Bimfeet, Bimdaptors) BIMDICATORS BIMBOARDS BIMENCLOSURES (Bimboxes, Bimconsoles and Bimcases ) BIMACCESSORIES BIMDICATO