Schematic · 2012
EAI TR-48 Analog Computer -8V / 2V Power Supply Schematic
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A single-page vector schematic depicting the -8V and 2V power supply circuit of the EAI TR-48 analog computer, drawn by Josh Bensadon on October 10, 2012. The diagram shows a transformer (T1) with 24-ohm secondary windings, rectifier diodes (D1, D2), filter capacitors (C1, C2), fuses (F1 3A, F2 0.5A), a 2N1218 transistor regulator, a zener diode reference (-1.8V, 100mW), and a 22-pin Amphenol connector providing -8V, -8V return, 2V, 2V return, and 2V control outputs; AC input provisions for both 120VAC and 240VAC are shown. A top-view component placement inset is included.
- Manufacturer
- EAI
- System
- TR-48
- Author
- Josh Bensadon
- Year
- 2012
- Type
- Schematic
- Language
- English
- Learning track
- machine reference
- Pages
- 1
- Credit
- Drawn October 10, 2012 by Josh Bensadon; PDF metadata title: EAI PS-2, created with PDFCreator Version 0.9.5, 2012-10-28.
- TR-48
- EAI
- power supply
- schematic
- -8V / 2V
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EAI TR-48 Analog Computer -8V / 2V Power Supply Schematic
22 PIN
AMPHENOL
Fl CONNECTOR
MN watvatueeen 7! RL 3A a
| 10 yr -8Vv
(4) © i WW OVO ) ae
0.32
BLK ce x |
(7) + + ~ 78V_ RETURN
240 0.3Q D2 = Cw
BLK
©—_—_|q— CHASIS v
WHT/BLU&RED GROUND ul 2V RETURN
Fe 01 is
hr) 0.5A 2n1218
C re
” — f S| ay
WHT/BLU&RED Lp
5 P|
- 2 ive N | 2V CONTROL
1/4W
© © o
WHT/BLU&RED Le D —————- HOT
= 55m
24Q l~ MAX VOLTAGE ON CONTROL INPUT ~68V os CONNECTION
(3) MIN VOLTAGE ON CONTROL INPUT ~14V B
Co A NEUTRAL
0.2Q WHT/BRN F
© S BRN E
WHT/GRY
var D D - 120VaCc
CONNECTION
c c
WHT/GRY B B HOT
WHT A A NEUTRAL
<€ FRONT TOP VIEW
\01
9G) ©&
EAI TR-48 ANALUG CUMPUTER
-B8V 7 e2V PUWER SUPPLY
RI TRANSFORMER Tl
O
rl} Li LJ
be DRAWN OCT 10, 2012 BY JOSH BENSADON