Tandy 1400LT - VII-4. Power PCB Circuit Diagram

VII-4. Power PCB Circuit Diagram
T500
T 1SS136 L50 1
--
TT
9 U 1- 2
c
- D502
c
=3 -
c
e
1SS136
L500
1m 2
15uH
0 +12v
(MAX6OmA)
22uH
TR506
1502
1- 2
hi+--
: D503
0 -12v
(MAX6OmA)
22uH
c
D504
1503
2
22uH
2
--
C50
.
1001
/25
*2
A
-
CONTROL2
L-ON
0-
JC50 I
il
1-
JC50 1
F.
C504
C507
1
2 z
,7U/25
INPUT
8-2ov
R500
2.2K
2A
:500
1
22U/25
0 GND
C500
--
I,. 470
I I
1504
1 IOUH 3A
*
1- 2
R542
5.6K
II R531
2SAl315Y E
-
'lu/50v
-
c
ZLZ
R
27K
520 470U/25
+
z
J510 R525
a IOK
41
1131 15 14 131 12 11 IOTSIT ~
-
R
522
A3J IC500 R535
4.7K
$ uPC494C R536
--
--- 222 (MI -- I
--L.
560
C515
IK 102[P)
103 (SI
C511 R533
I ..
6.0K
R527
(MI
549
.6K
CR
00
1
ZD50 1
W5.1
FB3 C516
z C520
1
R540 R543
220 2
470HM
TR500
3.3K
R503
321
p4M
1
T:
30U/ 16
*2
R547
60
CONTROL 1 0 JC50 I
R540
22
C522 330U/16
3c This transistor needs Heatsink.
No. HS500
NO. 20
7-20