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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\l829ct3_6.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
Alpha 10 Amp L Ch.
Circuit Diagram
L829CT3
SJB
10-Jul-1998
INITIALS
Date Printed
2
5
Sheet
of
Notes:
Output
VI Latch
VI Cut
Q13
IRFP360LC
Q14
IRFP360LC
R50
100R FU
R84
0R22 3W MO
R85
0R22 3W MO
+
C51
220U EL
R92
47R SM
R9
220R FU
R86
0R22 3W MO
R87
0R22 3W MO
R93
47R SM
R10
220R FU
Q17
BC849B
R102
68K SM
R103
68K SM
+
C23
100U EL
R94
150R SM
R108
1K2 SM
R11
1K0 FU
R104
120K SM
R37
22K SM
L1
2U2H LAC
R110
1R5 1W CF
VI Cut-out
+VI Protection
-VI Protection
3
2
1
Z8A
LM393A SM
R51
10R FU
R112
5R6 2W CF#A
C55
100N PC
R52
10R FU
ABiasRef
Q40
2SC2547
R68
10K SM
R118
33K SM
D5
10V 400MW
R129
220R SM
R130
220R SM
Q2
2SC5248
R138
220R FU
R148
1K0 FU
R149
1K0 FU
C61
100P PP
R131
220R SM
R132
220R SM
D6
10V 400MW
Q5
2SA1964
R139
100R FU
R140
100R FU
R150
470R FU
R154
2K2 SM
R155
2K2 SM
Q41
2SC2547
Q33
2SA1085
C63
150P PP
R12
470R FU
R13
470R FU
R158
1K5 SM
+SUP
-SUP
C56
100N PC
C57
100N PC
Q48
BC856B
Q49
BC856B
R160
100R SM
R72
100R SM
Q8
BC846B
Q9
BC846B
R73
100R SM
R74
100R SM
Q18
BC849B
Q19
BC849B
Q52
BC859B
R161
100R SM
+15V
R164
560R SM1%
Q20
BC849B
Q21
BC849B
R166
2K2 SM
R119
33K SM
-15V
R172
10R SM
C69X
56P PS
3
2
1
Z3A
TL072 SM
R176
470K SM
R177
470K SM
C71
10U NP
R38
47K SM
C75
47N PE
R59
1M0 SM
C64
330P PP
R180
47K SM1%
R182
2K7 SM
C72
10U NP
Input
ABSUP
5
6
7
Z3B
TL072 SM
R30
120K SM
R184
100K SM
R61
2M2 SM
Bias Level detector
Auto-Bias Servo
Voltage Servo
OUTPUT1
ATE_PAD
INPUT1
ATE_PAD
VSERVO1
ATE_PAD
ISERVO1
ATE_PAD
STABLE1
ATE_PAD
Bootstrap
1
2
3
SW2A
2PCO
R187
8K2 SM1%
Gain 29dB or 28.3x
R141
220R FU
R75
1K0 SM
D31
BAS16W SM
R120
33K SM
D21
1N4003F
R193
22R SM
R194
22R SM
Q53
BC859B
D32
BAS16W SM
HS7
TO220HS23TR
HS10
TO220HS23TR
HS5
TO247HS2 8DEGC/W
HS9
TO247HS2.8DEGC/W
Q_3
QPAD
Q_4
QPAD
Q_5
QPAD
Q_7
QPAD
Q_8
QPAD
Q_10
QPAD
Q_11
QPAD
Q_12
QPAD
Q_13
QPAD
Q_29
QPAD
!
!
!
!
!
!
!
!
!
!
!
!
Replace with same
type component only
!
R137
100K SM
D17
BAS16W SM
+
C4
100U EL 100V
C76
47N PE
R53
220R 2W CF
D39
12V 3W SM
C79
10U NP
R170
22K MF
C14
150P PP
R99
470R SM
C37
1N0 PP
R58
47R SM
R67
47R SM
IQ1
ATE_PAD
C12
4N7 PP
+
C52
220U EL
Q32
2SC2547
Q23
BC849B
SJB
22-9-97
C64 change from 220P to 330P
Hardware Remote RX
2
SJB
26-9-97
97_1085
97_1086
SJB
R50 change from 10R to 100R
3
22-10-97
97_1096
C99
10P SM#A
SJB
R61 & 168 changed. C99 added.
11-11-97
97_1102
4
C102
1N0 SM
R240
100R SM
5
6
Q_41
QPAD
R39
4K7 SM
Q22
BC849B
1
3
4
6
O2 TLP181 SM
R60
1K8 SM
R115
10K SM
C104
100N SM
Q_6
Q_19
Q_43
R168 2K4 SM
C67
10N SM
BSRef
Q_49
Q_50
Q_58
Q_59
Q_60
C68
100P PPS SM
C106
100P PPS SM
SJB
PCB Issue 2 to 3 changes
9-7-98
98_1042
