Dual Operational Amplifier Type AA1054.2 — Instruction Manual
Dual Operational Amplifier Type AA1054, 2
Amplifier Mounting Unit Type TX1055. 2
Issue : One
Date : May 1964
Mod.Ref. : 1054.2/15
1055.2/15
SOLARTRON inci tana
DUAL OPERATIONAL AMPLIFIER AA1054.2
Lo The Solartron Electronic Group Ltd.
SOLARTRON Victoria Road, Farnborough, Hants.
. Telephone: Farnborough 3000. Telex: 8545 Solartron Fnbro. Cables: Solartron Farnborough.
A Member of the Schlumberger Group.
Printed in England
Section
Figure
Appendix
A
CONTENTS
Introduction and Data Summary
Principles of Operation and Brief Description
Installation and Operation
Circuit Description
Test Procedures
List of Components
ILLUSTRATIONS
PL1 Connections
Typical Chopper Waveform
DC Slope Measurement
APPENDICES
DC Amplifier
Page
Section 1
INTRODUCTION AND DATA SUMMARY
1.1 Introduction
The Dual Operational Amplifier Type AA 1054.2 is a ‘plug-in’ unit comprising two
independent but identical general purpose d.c. amplifiers. Each amplifier may be used
separately for summing, integrating or inverting operations.
Overload indicators, ‘set zero' controls and test point facilities for both amplifiers
are available on the unit front panel. The inputs, outputs and all power supply connections are
made on a 24-way plug at the rear of the unit.
The Solartron Amplifier Mounting Unit Type TX 1055.2 has been designed to house
up to six Type AA 1054.2 units. Mating sockets for the amplifier plugs carry the power require-
ments and allow input and output terminations.
1.2 Data Summary
Each amplifier has the following electrical characteristics:
Output Range - +100 volts
Output Current (max. } - 5mA or 10mA into 10k2 load
d.c. gain - >1 x 10" without load
a.c. gain (100c/s) - >1 x 104
a.c. gain (10c/s) - >4 x 104
Input Current - <10-10 amps.
Bandwidth (gain of 10) - t5ke/s
Stability - The amplifier will remain stable with an out-
put load of 10k and 10, 000pF, and an input
load of 270pF on the summing junction with
1M° or capacitive feedback.
Power Requirements - +300 volts d.c.
)
)
-300 volts d.c. )}
) Stabilised
-200 volts d.c. )
)
6.3 volts a.c. at approximate d.c. bias of
+25 volt, with respect to common rail.
9.5 volts a.c. at approximate d.c. bias of
-100 volt, with respect to common rail.
Note: Solartron Power Supply Type AS 1104.2 has been designed to supply twelve
Type AA 1054.2 units - i.e., twenty-four amplifiers.
054. 2/1 1
Mechanical Details - Type AA 1054.2
Dimensions - Height: 7 in. 17.78 cm
Width: 2.8in. 71cm
Depth: 11.5 in. 29.2 cm (overall)
Weight: 3Ibs. 1.36 Kg.
All units, sub-assemblies and parts are interchangeable.
Mechanical Details - Type TX 1055.2
Dimensions - Height: 7 in. 17.78 cm
Width: 19 in 48.26 cm
Depth: 12.25 in 31 cm
Weight: Tlbs. 3,18 Kg
Section 2
PRINCIPLES OF OPERATION AND BRIEF DESCRIPTION
2.1 Principles of Operation
See Section 2.1 of Appendix 'A'.
2.2 Brief Description
The Dual Operational Amplifier Type AA 1054. 2 is designed for rack mounting in conjunc-
tion with Amplifier Mounting Unit Type TX 1055.2.
Valves are located on the main printed circuit boards, and the chopper relays plug into
separate sub-assemblies sitting in light traps to shield the input diode limiters,
The printed circuit boards are in turn fixed to the amplifier chassis, the whole forming a
unit of open construction. (See Frontispiece)
Note: Printed circuit boards 00P501/503 comprising amplifier 'A' are the rearmost pair.
Section 3
INSTALLATION AND OPERATION
3.1 Unit Connections
Plug 1 pin assignments for the Type AA 1054.2 Dual Operational Amplifier are shown in
Fig.1. The heater supply connected between Pins 9 and 21 feeds four valves and must be con-
nected on one side to a d.c. potential of +25 volts, and the heater supply connected between pins 10
and 22, feeding two valves, must be connected on one side to a d.c. potential of -100 volts.
2 WE
1.2/1
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OPA SJA
cra’ | ia | 2 | SGA
OP's’ SJ'B’
‘ ‘
cr'p’ | 16 | 4 | SGB
rps |i7 | 5 | TRIA’
ELANK 18 6 BLANK
scBli9 | 7 | sca’
OVERLOAD ‘B | 20 | 8 | OVERLOAD ‘A’
HEATERS | 21 | 9 | HEATERS 6-3V(AT+25V BIAS)
HEATERS | 22 | 10 | HEATERS 9-5V(AT-IOOV BIAS)
—200Vv | 23) I CHASSIS
—- 300V | 24] l2 | +300V
Fig.1 - PL1 Connections
The above requirements are met by the Solartron Type AS1104.2 Power Supply Unit
mentioned in Section 1.2.
Plug and socket assignments for the Type TX1055.2 Amplifier Mounting Unit are shown
in the circuit diagram at the end of the Manual - sockets SK1 to SK6 providing connectors for six
Type AA1054.2 units, sockets SK7 and SK8 being used for patching and plug PL1 for the power
supply connections.
3.2 Operation
If not used in conjunction with the Type TX 1055.2 Amplifier Mounting Unit, make suitable
connections to the plug at the rear of the Type AA1054,2 amplifier.
In either case patch as required and allow several minutes for the equipment to warm up.
Connect an oscilloscope at a sensitivity of about 100 mV/cm to the amplifier test points marked
T. P.1. on the front panel in turn for amplifiers 'A' and 'B' and adjust the associated ‘set zero’
potentiometers to give zero mean d.c. component in the observed waveform.
The provision of input and feedback components must be determined by the parameters of
the application in which the amplifiers are to be used. It is not advisable to operate the ampli-
fiers unless some feedback component is incorporated.
C21 and C22 (see Fig.1) ensure high frequency stability under all conditions of operation
within the specification (see Section 1.2 - Stability).
Section 4
CIRCUIT DESCRIPTIONS
4.1 Dual Operational Amplifier Type AA1054. 2
See Section 3 of Appendix 'A’.
4.2 Amplifier Mounting Unit Type TX1055. 2
The Amplifier Mounting Unit Type TX 1055.2 accommodates six Dual Operational
Amplifiers Type AA1054. 2 and can be mounted in a standard 19-inch rack.
Each amplifier plug has a corresponding socket on the mounting unit - sockets SK1
toSK6. Theh.t., heater, common rail, signal ground and chassis outlets from the sockets
are commoned and brought out toa connector PL1. Cl to C4 serve to decouple the h.t.
supplies at PL1.
Output and summing junction outlets from each amplifier socket are taken to sockets
SK7 and SK8 respectively and the overload outlets are commoned and brought out to socket SK9.
Section 5
TEST PROCEDURES
5.1 Equipment Required:
The following test equipment is required:
(a) A signal generator to give 0.1c/s - 10c/s and 100c/s at 10 volts r.m.s.
e.g., Solartron CO 546.
(b) A single beam oscilloscope with facilities for measuring between 1 millivolt
and 300 volts on both a.c. andd.c. ranges to an accuracy of 2%, e.g., Solartron
CD 5138.
(c) A 20k2/volt multi-range meter of accuracy better than 3% full scale deflection
e.g., Avometer Model 8.
(d) Power supplies of +300, -300, -200 volt d.c. at 50 milliamps. 6.3 and 9.5
volt a.c. at d.c. bias potentials of approximately +25 and -100 volt d.c. respect-
ively, e.g., Solartron AS 1104.2.
(e) Twin amplifier test set as shown in Fig.5.
5.2 Test 1 - Power Supplies
Connect +300 volt d.c., -300 volt d.c., -200 volt d.c. and heater (6.3 volt a.c. and
9.5 volt a.c.) supplies to the terminal block on the amplifier test set and plug the low frequency
Signal generator into SKD. Set switches SWA to position 1, SWB to position A, SWC to position 2,
SWF to position 2 and SWG to 'OFF'. Plug the amplifier into the 24~way socket on the end of the
flying lead. Allow time for the unit to warm up and then check the following voltages at the points
stipulated within the unit.
(a) -300 (+10) volt d.c. between pin 24 of plug 1 and chassis (pin 24 is negative)
using the 20kn/volt meter on the 500 volt d.c. range.
(b)
(c)
(d)
(e)
(f)
+300 (+10) volt d.c. between pin 12 of plug 1 and chassis using the 20k/volt
meter on the 500 volt d.c. range.
-200 (£10) volt d.c. between pin 23 of plug 1 and chassis (pin 23 is negative)
using the 20k2/volt meter on the 250 volt d.c. range.
6.3 (+0.3) volt a.c. between pins 9 and 21 of plug 1 using the 20kn/volt meter
on the 10 volt a.c. range.
+25 volt d.c. approximately between pin 9 and chassis using the 20k2/volt meter
on the 100 volt d.c. range.
9.5 (£0.3) volt a.c. between pins 10 and 22 of plug 1 using the 20k2/volt meter
on the 10 volt a.c. range.
Ag) -100 volt d.c. approximately between pin 10 and chassis using the 20kn/volt
meter on the 250 volt d.c. range.
5.3 Test 2 - Chopper Waveform and DC Offset.
(a)
(b)
(c)
(d)
(e)
54,2/1
With the test set connected as in 5.2, switch SWF to position 3, monitor the
test point, SKE, with the oscilloscope on the 1 volt/em. a.c. range. Check that
the chopper waveform is stable and set the chopper signal for zero d.c.
component by adjusting RV1 on the front panel of the amplifier (See Fig. 2).
Sm5 5ms
4 ee ry fr
O5V
+4 Ov
OsV
Sms SmS.
Fig. 2 - Typical Chopper Waveform
With the test set connected as in 5.3 (a), switch SWF to position 4 and SWB to
position B. Repeat the procedure of 5.3 (a), adjusting RV2 on the front panel
of the amplifier to balance chopper signal. Amplitude $2 volt peak-to-peak.
With the test set connected as in 5.3 (b) switch SWB to position A, SWC to
position 2 and SWF to position 3. Monitor the test point (SKC)with the 20ke/volt
meter on the 2.5 volt d.c. range and adjust RV1 for zero reading. Switch SWF
to position 2 and monitor the d.c. off-set on 50pA range.
It should not ‘exceed 100 millivolt. (Note: 50uA = 125mV f.s.d. on
AVO model 8).
With the test set connected as in 5.3 (c), switch SWB to position B and ©
SWF to position 4. Adjust RV2 for zero reading. Switch SWF to position 2
and monitor the d.c. off-set on the 50pA range. It should not exceed 100
millivolt.
With conditions as for 5.3 (d) check with the oscilloscope that the chopper
waveforms appear on Test Point 1 of amplifier 'A' and Test Point 1 of
amplifier 'B'; both points on the front panel of the amplifier. Remove the
20kn2/volt meter from SKC.
3.4
5.5
5.6
5.7
Test 3
(a)
(b)
Test 4
(a)
(b)
(f)
- Noise
With the test set connected as for 9. 3 (e) switch SWB to position A, SWC to
position 6 and SWF to position 2. With the oscilloscope on the 100 milli-
volt a.c. range, check that the output is not oscillating and measure the
amplitude of the noise. It should not be greater than 75 millivolt peak-to-
peak.
With the test set connected as in 5.4 (a) switch SWB to position B. Check
that the output is not oscillating and measure the amplitude of noise. It
should not be greater than 75 millivolt peak-to-peak.
- Leakage
With the test set connected as for 5.4 (b), switch SWB to position A and
SWC to position 7. Press SWE. Connect the 20kn/volt meter on the 50p4
range to test point (SKC). Release SWE. Measure the voltage on the meter
10 seconds after releasing SWE. It should not exceed 100 millivolt.
With the test set connected as for 5.5 (a) switch SWB to position B and repeat
the procedure of 5.5 (a).
- Stability.
Remove the 20kv/volt meter. With the test set connected as for 5.5 (b),
switch SWB to position A, SWC to position 8, and SWG to 'ON'. Monitor
SKE or SKC with the oscilloscope on the 300 volt a.c. range and adjust
the oscillator for 200 volt peak-to-peak, 100 cycles per second at SKE or
SKC. Switch SWF to position 1 and adjust the oscilloscope range
accordingly. (Range 100mV/cm). Now press and release SWD and check
that the amplifier is stable and gives no sign of oscillation. Repeat this
procedure for SWA positions 2 to 8 inclusive.
Note that by pressing and releasing SWD the summing junction of the
amplifier under test is temporarily shorted to signal ground: this being
a method of starting non-linear oscillation.
With the test set connected as for 5.6 (a), switch SWB to position B and
repeat the procedure outlined in 5. 6 (a).
With the test set connected as for 5.6 (b), switch SWB to position A, SWC
to position 9 and SWF to position 2. Set the oscillator to give 200 volt peak-
to-peak, 100 cycles per second, at SKE or SKC. Now switch SWF to
position 1 and repeat the procedure given in 5.6 (b).
With the test set connected as for 5.6 (c) switch SWB to position B and repeat
the procedure for 5.6 (c).
With the test set connected as for 5.6 (d) switch SWB to position A.
Monitor the voltage on Test Point 2 on the front panel of amplifier 'A'
with the oscilloscope on the 300 volt a.c. range. It should be not less than
175 volt. peak-to-peak.
With the test set connected as for 5. 6 (2) switch SWB to position B.
Monitor the voltage on Test Point 2 of amplifier 'B’ with the oscilloscope.
It should be not less than 175 volt peak-to-peak.
Test 6 - Overload.
(a)
With the test set connected as for 5.6 (f) switch SWA to position 3, SWB to
position A and SWF to position 5. Increase the drive of the oscillator
until lamp LP1, the indicating neon on the front panel of the amplifier
lights. Measure the voltage at the test point with the oscilloscope on the
30 volt range. It should indicate not less than 5 volt peak-to-peak.
(b) With the test set connected as in 5.7 (a), switch SWB to position B and SWF
to position 6; and with lamp LP2 lit, measure the test point voltage as in
5.7 (a).
5.8 Test 7 ~- AC Gain.
(a) With the test set connected as for 5.7 (b), switch SWA to position 1, SWB
to position A, SWC to position 5 and SWF to position 2. Set the oscillator
to give 200 volt peak-to-peak, 100 cycles per second at SKE or SKC and
measure with the oscilloscope on the 300 volt a.c. range. Now switch SWF
to position 1 and measure the test point voltage on the 30 millivolt range of
the oscilloscope. It should be not greater than 20 millivolt peak-to-peak.
(b) With conditions as for 5.8 (a), switch SWB to position B and measure again.
The test point voltage should not exceed 20 millivolt peak-to-peak.
(c) With conditions as for 5.8 (b) switch SWB to position A and SWF to position 2.
Decrease the frequency of the oscillator to 10 cycles per second and set it
to give 200 volt peak-to-peak at SKE or SKC. Now switch SWF to position 1
and measure the test point voltage on the 30 millivolt range of the oscilloscope.
It should be not greater than 5 millivolt peak-to-peak.
(d) With conditions as for 5.8 (c) switch SWB to position B and re-measure. The
test point voltage should not exceed 5 millivolt peak-to-peak.
5.9 Test 8 - DC Gain.
(a) With the test set connected as for 5.8 (d) switch SWC to position 4 and SWF
to position 7. Monitor SKE or SKC with the oscilloscope on the 300 volt d.c.
range and drive the time-base of the oscilloscope with the oscillator output.
Set the oscillator to give 250 volt peak-to-peak, 0.1 of a cycle per second, at
SKE or SKC.
(b) With the test set connected as for 5.9 (a) switch SWF to position 2 and with the
oscilloscope on the 300 millivolt d.c. range, measure the d.c. slope of the
line ignoring the super-imposed a.c. noise. It should not exceed 50 millivolt,
as indicated in Fig. 3.
Note that although SWB is switched to position B, the gain of amplifier 'A' is
being measured.
(c) With the test set connected as for 5.9 (b) switch SWB to position A and re-
measure the d.c. slope. It should not exceed 50 millivolt.
25mV
Fig. 3. DC Slope Measurement
54.2/1 1
LIST OF COMPONENTS
Printed Circuit Board Assembly OOP501 )
)
Printed Circuit Board Asse mbly OOP503_—sC*)
RESISTORS VARIABLE
See Appendix 'A'
Value Tol Rating
Circuit Description Ohms % Watts Manufacturer and Type
Ref.
RV1 (Amp 'A') Wire Wound 1K 10 1 Colvern CLR 1206/95/s
RV1 (Amp 'B') Wire Wound 1K 10 1 Colvern CLR 1206/95/s
CAPACITORS
Cet. Value Tol. Rating
Ref. LF % Volts Manufacturer & Type
AMP 'A'
* C6 . 047 10 400 Wima Tropyfol M.MP1
AMP 'B'!
*C6 .047 10 400 Wima Tropyfol M.MPl
AMP 'A'
*CT7 330pF 2 500 Suflex H.S. Po.
AMP 'B'
*CT7 330pF 2 500 Suflex H.S. Po.
AMP 'A'
*C8 . 0033 10 400 Wima Tropyfol F.MPl
AMP 'B'
*C8 . 0033 10 400 Wima Tropyfol F.MPIl
Circuit Description vane Tol one Manufacturer and Type
Ref.
C21 Polystyrene Tub. Ins. 10pF tlpF 500 G.E.C.
C22 Polystyrene Tub. Ins. 10pF +lpF 500 G.E.C.
MISCELLANEOUS
Cet.
Ref. Description Manufacturer & Type
ILP1 (Amp 'A') Lamp (without Resistor) Clear Arcolectric SL80
ILP1 (Amp 'B') Lamp (without Resistor) Clear Arcolectric SL80
TP1l (Amp 'A') Socket Pressfit Red Sealectro SKT-50
TPl (Amp 'B') Socket Pressfit Red Sealectro SKT-50
TP2 (Amp 'A') Socket Pressfit Yellow Sealectro SKT-50
TP2 (Amp 'B') Socket Pressfit Yellow Sealectro SKT-50
Plug Red (2 off) ) . . ve
Plug Yellow (2 off) _) Supplied with Sealectro FT-M-7
PL1 Plug 24-Way McMurdo XRP24
* On Printed Circuit Board OOP501
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4.2/1
APPENDIX 'A’'
DC AMPLIFIER
used on
Dual Operational Amplifier
+100V and -100V Reference Supply
Mark-Space Multiplier
Mark-Space Multiplier
Issue : One
Date : January, 1964.
LIST OF CONTENTS
Section
1 INTRODUCTION AND DATA SUMMARY
1.1 Introduction
1.2 Data Summary
2 PRINCIPLES OF OPERATION AND BRIEF DESCRIPTION
2.1 Principles of Operation
2.2 Brief Description
3 CIRCUIT DESCRIPTION AND OPERATION
3.1 AC Channel
3.2 DC Channel
3.3 Mixer Stage
3.4 Output Stage
3.5 Operation
3.6 Overload Indication
LIST OF COMPONENTS
DIAGRAMS
Figure
1 Component Location : Printed Circuit Board OOP501
2 Component Location : Printed Circuit Board OOP503
3 Circuit Diagram > OOP501/503
10
1.2/1
Section 1
INTRODUCTION AND DATA SUMMARY
1.1 Introduction
The amplifier described in this Appendix is a standard d.c. amplifier as
used in the Dual Operational Amplifier Type AA1054. 2 and incorporated in the twin
(+ and -} 100 volt Reference Supply Type AS1102, Mark/Space Modulator Type TR1322
and Height Modulator Type TR1323.
1.2 Data Summary
Output Range - £100 volts
1
Output Current (Max. ) 5mA,or 10mA into 10k2 load
DC Gain - >1 x 10” without load
AC Gain 100c/s - >1x104
10c/s - >4x 104
Power Requirements - +300 volts d.c.
)
)
-300 volts d.c. ) nominal stabilised
)
-200 volts d.c. )
6.3 volts a.c. at approximate d.c. bias of +25 volt
with respect to common rail.
9.5 volts a.c. at approximate d.c. bias of - 100 volt
with respect to common rail.
Section 2
PRINCIPLES OF OPERATION AND BRIEF DESCRIPTION
2.1 Principles of Operation
An input signal applied to the Summing junction is split and amplified through two
channels - a high-frequency channel, capacity coupled; and a low frequency channel via the
mechanical chopper.
The two channel outputs are added at the input of a mixer stage which, in conjunc-
tion with the output stage, provides considerable gain.
Zero frequency gain of the chopper channel is approximately 60 db (i.e. 1000) and
the parallel high frequency channel gain is approximately 26 db (i.e. 20). The gain of the mixer
and output stages is approximately 80 db (i.e. 10,000) at low frequencies. After summation of
the signals at the mixer stage, the overall gain and phase of the amplifier is controlled by in-
ternal feedback (R17, R18, R19; RV1; C8, C9, C19),
This type of circuit configuration provides maximum low frequency gain with mini-
mum overall stability problems.
11
2.2 Brief Description
The d.c. amplifier comprises two printed circuit boards - OOP501 upon
which the valves and associated components are mounted, and OOP503 holding the chopper
relay and input resistors.
Harwin pin terminations on the boards provide for connecting power supplies and
linking to pane] mounted components, - i.e. test points, overload indicator, adjustment potentio-
meter. ;
Holes drilled in the boards to accommodate 4BA bolts facilitate mounting in the
respective equipments.
Section 3
CIRCUIT DESCRIPTION AND OPERATION
3.1 AC Channel
Signals at the input junction S.J. (pin 5) are a.c. coupled to triode V1A grid via
capacitor Cl. Diode limiter MR5 and MRé6 in parallel with the input clamps the signal at
approximately #0.6V to prevent the build-up of nonlinear lockout oscillations.
The amplified output from V1A anode is coupled to the control grid of pentode
VIB by C5. R8 with C6 and R13 with C7 are phase correction components.
3.2 DC Channel
Signals from.the input junction SJ (pin 5) are taken via R4, R5 to one contact of
chopper relay RL1, the purpose of which is to alternately connect R4 to ground and leave it
free at a frequency of 100c/s. Thus a pulsed signal at triode V2A grid is produced, the
amplitude of which is proportional to that at the input.
The amplified signal at V2A anode is a.c. coupled by C13 to pentode V2B grid for
further amplification. A second contact on RL1, coupled to V2B anode by R28-C16, syn-
chronously rectifies the pulsed signal to provide d.c. restoration.
MR3 in series with R42 energises RL1 coil from the 6.3V heater 'A' supply.
3.3 Mixer Stage
The d.c. signal at C16-RL1 junction is applied to mixer pentode V1B grid via R11
and controls the operational d.c. conditions at the anode.
V1B cathode potential is determined by the setting of potentiometer RV1, and this
influences the d.c. levels of the following direct coupled output stage.
3.4 Output Stage
Triode - pentode V3A-V3B in cascode comprises an amplifier enabling considerable
gain to be achieved whilst being capable of delivering a reasonable output current.
R40, R41 and VT1 form a potential divider across the mixer output. VT1, in the
lower limb, has a high dynamic impedance but a low d.c. volt drop. Thus a large d.c. volt drop
12 WE/105¢
across R40-R41 can be achieved without serious signal loss, the signal at R41-VT1 junction
going to V3B grid.
Zener diode MR4 is a 22 volt base clamp for VT1, while MR2 prevents VT1 collec-
tor potential from exceeding 25 volts under switch-on conditions - i:e., should h.t. be applied
before V3B has warmed-up, to enable the cathode -grid diode action to function.
R34 is provided in series with a test point to prevent an accidental short circuit
occurring. V3A cathode is prevented from exceeding approximately 150 V with respect to the
common rail by voltage dependent resistor R43.
3.5 . Operation
On positive going signals current from the amplifier is taken from V3A cathode.
On negative going signals V3A virtually cuts off and current is taken from the anode of V3B.
When this current is such that the potential across R33 exceeds 18 volts, Zener diode MR1
conducts to allow the extra current to flow through R21,
3.6 Overload Indication
The presence of an overload condition is detected by a neon indicator which strikes
when the output from the d.c. channel at the junction of C16 and RL1 reaches approximately
60 volts.
1.2/1 . 13
COMPONENTS LISTS
PRINTED CIRCUIT BOARD OOP501
.RESISTORS
Cet. Value Tol. Rating
Ref. Description Ohms % Watts Manufacturer & Type
Rl Not fitted
R2 Res.Comp.GR2. Ins. 1M 10 i Dubilier BTT
R3 Res.Comp.GR2. Ins. 100 10 t Dubilier BTT
R7 Res. Comp.GR2. Ins. 100 10 i Dubilier BTT
R8 Res.Comp.GR2.Ins. 200K 10 3 Dubilier BTT
RQ Res.Comp.GR2. Ins. 680 10 3 Dubilier BTT
R10 Res.Comp.GR2.Ins. 2.7K 10 5 Dubilier BTT
Rll Res.Comp.GR2.Ins. 4.7M 10 Zz Dubilier BTT
R12 Res. Comp.GR2. Ins. 100 10 4 Dubilier BTT
R13 Res. Comp.GR2. Ins. 180K 7 1 Welwyn Metox F22
R14 Res.Comp.GR2.Ins. 1.8K 10 + Dubilier BTT
R15 Res. Comp.GR2.Ins. 110K 7 1 Welwyn Metox F22
R16 Res. Comp.GR2. Ins. 27K 10 ; Dubilier BTT
R17 Res. Comp.GR2. Ins. 1M 10 rf Dubilier BTT
R18 Res.Comp.GR2. Ins. 100 10 ; Dubilier BTT
R19 Res. Comp.GR2. Ins. 56K 10 t Dubilier BTT
R20 Res.Comp.GR2.Ins. 100 10 ; Dubilier BTT
R21 Res.Comp.GR2. Ins. 470 10 5 Dubilier BTT
R22 Res. Comp.GR2. Ins. 22K 10 t Dubilier BTT
R23 Res.Comp.GR2. Ins. 220K 10 a Dubilier BTT
R24 Res.Comp.GR2.Ins. 3.9K 10 + Dubilier BTT
R25 Res.Comp.GR2.Ins. 3.3M 10 t Dubilier BTT
R26 Res.Comp.GR2. Ins. 100 10 i Dubilier BTT
R27 Res. Comp.GR2. Ins. 180K 10 5 Dubilier BTT
R28 Res. Comp.GR2. Ins. 47K 10 4 Dubilier BTT
R29 Res.Comp.GR2.Ins. 2.2K 10 ry Dubilier BTT
R30 Res.Comp.GR2.Ins. 820K 10 q Dubilier BTT
R31 Res.Comp.GR2.Ins. 560K 5 7 Dubilier BTT
R32 Res. Comp.GR2. Ins. 100 10 Py Dubilier BTT
R33 Res.Comp.GR2.Ins. 4.7K 10 q Dubilier BTT
R34 Res. Comp.GR2. Ins. 47K 10 ¢ Dubilier BIT
R35 Res.Comp.GR2.Ins. 6.8K 10 $ Dubilier BTT
R36 Res.W.W. Vit. 4.7K 10 3 Painton P306A
R37 Res.Comp.GR2. Ins. 22K 10 3 Dubilier BTT
R38 Res.Comp.GR2.Ins. 330K 10 < Dubilier BTT
R39 Res.Comp.GR2.Ins. 150K 10 t Dubilier BTT
R40 Res. Film(Carbon)
GR1.Non. Ins. 1.1M 2 ry Welwyn C21
R41 Res. Film(Carbon)
GR1.Non.Ins. 1.1M 2 rd Welwyn C21
R42 Res. Comp.GR2. Ins. 120 10 5 Dubilier BTT
R43 Voltage Dependent Res. Mullard E299DC/P346
14 WI
CAPACITORS
Cet. Value Tol.
Ref. Description EF %
Cl Cap.Met.Plas.Tub.Ins .1 10
C4 Cap. Electrolytic , 100
C5 Cap.Met.Plas.Tub.Ins_ .22 10
C6 )
C7 ) See Component List of Unit in which used.
C8 )
cg Cap. Met. Plas.Tub.Ins. .047 10
C10 Cap. Electrolytic 100
C11 Cap. Polystyrene 10pF +1pF
c12 Cap. Electrolytic 2
C13 Cap. Met. Foil.Tub.Ins. .1 10
C14 Cap. Electrolytic 100
C15 Cap. Electrolytic 2
C16 Cap. Met. Foil. Tub.Ins. .047 10
C17 Cap. Met. Pap.Tub.Ins. .01 10
C18 Cap. Met. Foil. Tub.Ins. 1000pF 20
c19 Cap. Electrolytic 100
C20 Cap. Met. Tub. Ins. 0.1 10
VALVES
Cet.
Ref. Description
vil Valve
v2 Valve
V3 Valve
SEMICONDUCTORS
Cet.
Ref. Description
VTl Transistor
MR1 Silicon Zener Diode
MR2 Diode
MR3 Diode
MR4 Silicon Zener Diode
34,2/1
Rating
Volts
125
400
400
500
350
400
350
400
630
400
400
Manufacturer & Type
Wima Tropyfol
Wima Printlyt
Wima Tropyfol
Wima Tropyfol
Wima Printlyt
Suflex
Hunts
Wima Tropyfol
Wima Printlyt
Hunts
Wima Tropyfol
Wima Tropyfol
Wima Tropyfol
Wima Printlyt
Wima Tropyfol
'™'
'™i'
™
H.S.
MEW118T
'M!
MEW118T
'm!
'k
(hr
™'
Manufacturer & Type
Mullard/Brimar ECF82 or 6U8
Mullard/Brimar ECF82 or 6U8
Mullard/Brimar PCF82 or 9U8
Manufacturer & Type
Texas Instruments 2S701
Jermyn Ind. Type TO.5
International
Rectifiers MEZ18T10
A.E.I. MS1H
A.E.I. MS1H
International
Rectifiers MEZ22T10
15
COMPONENTS LISTS
PRINTED CIRCUIT BOARD OOP503
RESISTORS
Cet. Value Tol. Rating
Ref. Description Ohms % Watts Manufacturer & Type
R4 Res. Comp.GR2. Ins. 2.7 10 ry Dubilier BTT
R5 Res. Comp.GR2. Ins. 470K 10 z Dubilier BTT
R6 Res. Comp.GR2. Ins. 10M 10 t Dubilier BTT
CAPACITORS
Cet. Value Tol. Rating
Ref. Description HF % Volts Manufacturer & Type
C2 Cap. Met. Tub. Ins. . 047 20 125 Wima Tropyfol 'M'
C3 Cap. Met. Tub. Ins. 0.1 10 125 Wima Tropyfol ‘'M'
SEMICONDUCTORS
Cet.
Ref. Description Manufacturer & Type
MR5 Diode Mullard OA 202
MR6 Diode Mullard OA 202
MISCELLANEOUS
Cet.
Ref. Description Rating Manufacturer & Type
RL1 Relay Sync. Chopper 100c/s
plus Chopper Top Cap. 6.3V A.E.1. CK4
16 WE/108
25 20 17 12 10 22 21 "
5 6 O ea ce) fe) Oo fe)
Cen cts RI7
<4 +
Rid
C1 [Re | at]
C6 c9y
R24 a
‘ 6O clo + + C14
cs
70
[res |
mel
[R30 ]
> (R22 ]
e —
a O 24
cis
[Rs] ae
Oua [Maa ]
- + O16
C16
aN waa
O's
c
12 + Fl, Ral oy
R37
{
oP cap
Fig.1 - Component Location : Printed Circuit Board OOP501
3
c3 O
Ht roar-7
Mw 10;
‘awa, C)
Susi
Tui
2
@)
4 C2
° ]
O
NOTE ‘-
DIODES MR5,MR6 MOUNTED ON COPPER SIDE
OF BOARD.
WE/1054. 2/1 Fig. 2 - Component Location : Printed Circuit Board OOP503
APPENDIX B
Technical Manual : AS1403 Power Supply Unit
/1
Appendix B
AS1403 POWER SUPPLY
The AS1403 Power Supply comprises an AS1104.2 Power Supply anda mains supply switching
and distribution circuit. SA and SB are, respectively, the HEATER ON and HT ON switches.
Sockets SKTA, SKTB, SKTC and SKTD route mains power to pins P and R, plugs PLA ona maxi-
mum of four Tutors. Socket SKTE links with plug PL1 on the AS1104. 2 Power Supply.
LIST OF COMPONENTS
Cet. Solartron
Ref. Description Part No. Manufacturer and Type
SA Switch Toggle DP C/O, 6A 3760 00080 Painton 501085
SB Switch Toggle DP C/O, 6A 3760 00080 Painton 501085
SKTA Socket 3 Way 3515 03040 Bulgin SA 2026
SKTB Socket 3 Way 3515 03040 Bulgin SA 2026
SKTC Socket 3 Way 3515 03040 Bulgin SA 2026
SKTD Socket 3 Way 3515 03040 Bulgin SA 2026
SKTE Socket 6 Way 3514 06010 Plessey CZ49017
AS1104. 2 Power Supply (See Appendix B)
4 rc ee) Vv 3LyS
Y YY Y NSd Z-vOILSY NO
id ONId HLIM SLD3NNOD 3LYS L3NDOS
‘LH — @S HDLIMS
“SYILV3H — WS HDLIMS
4 6 é é
8 3 $ $
LYS LYS aLYS VLY¥S
WaLnaNn Hida aNI1
” Qv31 SNIVW
CIRCUIT DIAGRAM : AS81403 POWER SUPPLY UNIT
BB/1351/1