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ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:
DATE
Filename
ECO No. DESCRIPTION OF CHANGE
L882C2_4.1.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
A85 amplifier - power supply and microcontroller interface
Circuit Diagram
L882C2
J Reckless
20-Mar-2002
INITIALS
Date Printed
2 4Sheet of
Notes:
L
N
E
N E L
SK203
IEC3 NO RIVETS
BC200
TOOLING4.1
Green
1
SK202
CAGECLAMP1
C205
3N3 MAINS
C206
3N3 MAINS
Far from PCB
SK201B
JACK3.5X2
Near to PCB
SK201A
JACK3.5X2
SW200B
VOL SEL SLIDE
SW200A
VOL SEL SLIDE
C208
3N3 MAINS
C207
3N3 MAINS
Vin
I
GND
G
Vout
O
IC201
L4940V5
D203
1N4003F
D201
1N4003F
D202
1N4003F
D200
1N4003F
C225
100N CD
C226
100N CD
VR201
VDR 115V
VR200
VDR 115V
+
1
~
2
-
4
~
3
BR200
BRGBU8D
LIVENEUTRAL
EARTH
EMC Shield
SH200
EMCMAINS
NEUTRAL
LIVE
LIVE
NEUTRAL
0V_D
+5V(D)
0V_D
0V_PSU
VPOS
VNEG
0V_PSU
+49V
+5V_D
0V_D
PWRON
-49V
+5V_D
TH200
PTH90DEG
+5V_D
0V_D
THPROT_uC
VIPROT_L
VIPROT_R
+5V_D
0V_D
VIPROT_uC
0V_D
9VRMS
+5V_D
0V_D
9VRMS
+
C229
22U EL
AC_PRES
+
C227
3300u 25V
+
C228
1000u 10V
2
3
4
6
7
8
1 5
SK204
MOLEXPWR8
1
2
3
4
5
6
SK200
MOLEXPWR6
D206
BAS16W SM
TR204
BC849B
R211
10K SM
R220
10R SM
R200
1K0 SM
TR202
FMMT597
D205
BAS16W SM C213
10N SM
TR203
FMMT497
DZ207
15V 350MW SM
+
C223
10U EL
+
C222
10U EL
R210
10K SM
+49V
0V_TRIG
0V_TRIG
1 2
IC202A
74HC14D
3 4
IC202B
74HC14D
1011
IC202E
74HC14D
1213
IC202F
74HC14D
C214
10N SM
C215
10N SM
R213
4K7 SM
R214
4K7 SM
TR205
BC856B
R206
1K0 SM
C218
10N SM
C203
100N SM
DCPROT_L
DCPROT_R
+5V_D
0V_D
DCPROT_uC
0V_D
5 6
IC202C
74HC14D
89
IC202D
74HC14D
C216
10N SM
C217
10N SM
R215
4K7 SM
R216
4K7 SM
TR206
BC856B
R207
1K0 SM
C220
100N SM
C204
100N SM
14
7
IC202G
74HC14D
C201
100N SM
C202
100N SM
R205
1K0 SM
R221
10R SM
C224
100N CD
R219
1K8 SM
R212
4K7 SM
TR201
FMMT497
TRIGGER OUTPUT
APPROX 13.5VDC
60mA MAX CURRENT
R201
1K0 SM
R202
1K0 SM
R203
1K0 SM
R204
1K0 SM
C219
10N SM
C221
10N SM
MAINS WIRING AND AUXILIARY SUPPLY
POWER AMP SUPPLY
MICROPROCESSOR SIGNALS INTERFACE
HS
HS200
TO220HS08REG
1
2
3
4
5
6
SK205
AMPCT6
RLY200A
DPDT5V
RLY200B
DPDT5V
RLY200C
DPDT5V
115V
115V
6
4
2
1 0V
5
8
9V
0V
9V
3
7
0V
TX200
TX 3VA 9301
TR200
BD179
R217
10R SM
R218
10K SM
STANDBY RELAY CONTROL
R227
1K0 SM
DZ204
4V7 350MW SM
R228
100K SM
L200
27mH
C200
680P PP
3
2
1
IC200A
LM393A SM
R223
10K SM
R229
100K SM
R209
10K SM
R224
1K8 SM
R230
1K5 SM
5
6
7
IC200B
LM393A SM
84
IC200C
LM393A SM
R225
1K8 SM
C231
1N0 SM
R208
10K SM
C232
100N SM
0V_TRIG
+5V_D
RC5 IN
CARRIER FILTER AND DEMODULATOR
C230
10N SM
MODULATED RC5
REMOTE CONTROL INPUT
+
C233
10U EL
R222
10K SM
TRG IN
TP206
TP200
TP207
TP203
TP201
TP202
TP210
TP204
TP205
TP208
TP209
TP211
TP212
+
C209
10,000u 63V
+
C210
10,000u 63V
R226
470R SM
C211
100N PC
C212
100N PC
CHASS
SK101C
CAMCON_G
C235
1N0 SM
C234
220N X2 CLASS
R231
1M5 VR25
NF
NF
F202
T750mA SM
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0
F200
T4A
F201
T4A
02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1