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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\l829ct4_6.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
Alpha 10 Amp R Ch.
Circuit Diagram
L829CT4
SJB
10-Jul-1998
INITIALS
Date Printed
3
5
Sheet
of
Notes:
Output
Q15
IRFP360LC
R54
100R FU
R90
0R22 3W MO
R91
0R22 3W MO
R96
47R SM
R15
220R FU
Q24
BC849B
R106
68K SM
L2
2U2H LAC
R111
1R5 1W CF
-VI Protection
5
6
7
Z8B
LM393A SM
R55
10R FU
R113
5R6 2W CF#A
C58
100N PC
ABiasRef
Q43
2SC2547
R69
10K SM
R121
33K SM
D7
10V 400MW
R133
220R SM
R134
220R SM
Q3
2SC5248
R143
220R FU
R151
1K0 FU
R152
1K0 FU
C62
100P PP
Q6
2SA1964
R144
100R FU
R145
100R FU
R153
470R FU
R156
2K2 SM
R157
2K2 SM
Q44
2SC2547
Q36
2SA1085
C65
150P PP
R17
470R FU
R18
470R FU
R159
1K5 SM
+SUP
-SUP
C59
100N PC
C60
100N PC
Q50
BC856B
Q51
BC856B
R162
100R SM
R76
100R SM
Q10
BC846B
Q11
BC846B
R77
100R SM
R78
100R SM
Q25
BC849B
Q26
BC849B
Q54
BC859B
R163
100R SM
+15V
R165
560R SM1%
Q27
BC849B
Q28
BC849B
R167
2K2 SM
R122
33K SM
-15V
R174
10R SM
C70X
56P PS
3
2
1
Z4A
TL072 SM
R178
470K SM
R179
470K SM
C73
10U NP
R41
47K SM
C77
47N PE
R62
1M0 SM
C66
330P PP
R181
47K SM1%
R183
2K7 SM
C74
10U NP
Input
ABSUP
5
6
7
Z4B
TL072 SM
R64
2M2 SM
Bias Level detector
Auto-Bias Servo
Voltage Servo
OUTPUT2
ATE_PAD
INPUT2
ATE_PAD
VSERVO2
ATE_PAD
ISERVO2
ATE_PAD
STABLE2
ATE_PAD
+
C5
100U EL 100V
4
5
6
SW2B
2PCO
R188
8K2 SM1%
Gain 29dB or 28.3x
R146
220R FU
R79
1K0 SM
D33
BAS16W SM
R123
33K SM
D22
1N4003F
R195
22R SM
R196
22R SM
Q55
BC859B
D34
BAS16W SM
HS13
TO220HS23TR
HS14
TO220HS23TR
HS12
TO247HS2.8DEGC/W
Q_16
QPAD
Q_17
QPAD
Q_18
QPAD
Q_20
QPAD
Q_21
QPAD
Q_22
QPAD
Q_23
QPAD
Q_24
QPAD
Q_25
QPAD
Q_26
QPAD
!
!
!
!
!
!
!
!
!
!
!
Replace with same
type component only
!
R197
100K SM
Bootstrap
!
D26
BAS16W SM
C78
47N PE
R57
220R 2W CF
D41
12V 3W SM
C35
150P PP
R101
470R SM
C80
10U NP
R171
22K MF
C49
1N0 PP
R66
47R SM
R114
47R SM
IQ2
ATE_PAD
C36
4N7 PP
+
C54
220U EL
VI Latch
VI Cut
+
C24
100U EL
R97
150R SM
R109
1K2 SM
R16
1K0 FU
R107
120K SM
R40
22K SM
VI Cut-out
!
Q35
2SC2547
Q16
IRFP360LC
R88
0R22 3W MO
R89
0R22 3W MO
+
C53
220U EL
R95
47R SM
R14
220R FU
R105
68K SM
+VI Protection
R56
10R FU
R135
220R SM
R136
220R SM
D8
10V 400MW
HS11
TO247HS2 8DEGC/W
!
Q30
BC849B
SJB
22-9-97
C66 change from 220P to 330P
Hardware Remote RX
2
SJB
26-9-97
97_1085
97_1086
SJB
R54 chage from 10R to 100R
3
22-10-97
97_1096
C100
10P SM#A
SJB
R64 & 169 changed. C100 added.
11-11-97
97_1102
4
R241
100R SM
C103
1N0 SM
5
6
Q_42
QPAD
R42
4K7 SM
Q29
BC849B
1
3
4
6
O3 TLP181 SM
R63
1K8 SM
R117
10K SM
C105
100N SM
Q_44
Q_45
Q_46
R169 2K4 SM
BSRef
Q_51
Q_52
Q_61
Q_62
Q_63
C107
100P PPS SM
C108
100P PPS SM
SJB
PCB Issue 2 to 3 changes
9-7-98
98_1042
