1
2
3
4
A
B
C
D
4
3
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ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:
DATE
Filename
ECO No.
DESCRIPTION OF CHANGE
J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\L829CT5_6.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
Alpha 10 Amp Remote Bus
Circuit Diagram
L829CT5
SJB
10-Jul-1998
INITIALS
Date Printed
5
5
Sheet
of
Notes:
Near to PCB
SK10A
JACK3.5X2
Far from PCB
SK10B
JACK3.5X2
R210
1K5 SM
R211
4K7 SM
Remote In
Remote Out
R212
1K5 SM
Q57
BC859B
Remote Buffer
REMJK1
REMJKO1
REMJK2
Q_2
+UREG
R221
470R 1W CF
Q61
BC849B
R227
10R FU
+
C83
100U EL
!
R80
10K SM
Q31
BC849B
R83
100R SM
+5V
R28
10K SM
R198
4K7 SM
Q37
BC849B
Q62 BC849B
R213
47R SM
R209
4K7 SM
+5V
Send
Break
R220
100K SM
L3
27MH
C91
680P PP
C92
10N SM
R238
1K8 SM
R237
1K5 SM
R239
1K8 SM
R223
10K SM
3
2
1
Z13A
LM393A SM
R225
10K SM
R222
100K SM
+5V
5
6
7
Z13B
LM393A SM
R226
10K SM
R236
10K SM
+5V
Demod
Carrier Demodulator
C93
1N0 SM
8
4
Z13C
LM393A SM
C97
100N SM
+5V
Carrier Filter
Demod
Raw
RemRaw
Q_34
Q_35
Q_36
Q_37
Q_38
C98
220P SM
Q_39
Q_40
SJB
Hardware Remote RX
No Change
2
SJB
26-9-97
22-9-97
97_1085
97_1086
SJB
R210, R198, R212 change
3
22-10-97
97_1096
SJB
No Change
11-11-97
97_1102
4
5
6
Q_65
1
3
4
6
O1
TLP181 SM
Q_66
Q_67
Q_68
SJB
PCB Issue 2 to 3 changes
9-7-98
98_1042
