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EP108
150V DC
IN RUSH CURRENT
BATTERY BACKUP
LIMITERS
RT101
RT102
EP105
DC INPUT (+)
RED
R101
EP104
330k
DC INPUT (-)
BLACK
R102
EP109
330k
HV GROUND
BATTERY BACKUP
R103
240k
C103
R104
.22
100k
4
V RMS
+ C117
C118
R140
.47
270pF
15k
R153
100
3
I SENSE
R113
C116
.03
.1
5
SS
R114
+ C119
.03
1
10
GND
16
V EAO
R142
C127
.01
560k
C126
.1
EP101
REMOTE ENABLE POWER SUPPLY
5
AC HOT INPUT (BRN)
CR102
CR101
EP102
CR111
+ C101
C102
6
CR110
AC COLD INPUT (BLU)
220
.01
R280
CR113
C109
R257
10k
5.1V
.1
10k
Q102
3612
C236
.1
+5V
ON/OFF
SENSE
R279
BATTERY
CR143
10k
BACKUP
CR142
R278
TO REMOTE
100k
R275
R277
20k
U121
10k
8
TL431AID
1
REF
CATH
GND
R276
10k
2,3,4,5,6,7
8
C229
+C230
.1
1
10-41
18,19,20
PRE-CONTROLLER
16,17
+15V
14,15
POWER FACTOR CHOKE
R117
L107
330
12,13
11
+ C105
C104
1
R128
+
1
51
CR106
9,10
1
R116
+ C106
+ C107
7,8
CR105
36k
1500
1500
5,6
3,4
R105
R108
R109
CR103
330k
20k
20k
C114
Q108
6027
.1
R106
R110
R120
R126
330k
20k
20k
10
R107
CR104
R302
R306
R112
330k
18V
20k
20k
10
Q101
6354
2
400V
R111
IAC
CONTROLLER IC
220
PFC
Q107
12
OUT
6026
U102
R115
CR114
ML4841IS
4.7k
15
FB
R146
100
9
RAMP2
C125
.0033
6
VDC
C113
R143
R144
.0047
3k
24.3k
7
RTCT
+
C122
C123
C124
R119
470pF
1
.1
24.3k
8
RAMP1
C108
470pF
1
IEA0
R141
10k
C120
270pF
PRE-CONTROLLER
C121
PRE-CONTROLLER
SWITCHED
.0027
14
Q104
REF
+15V
+15V
T106
6026
13
Vcc
+ C128
C147
R149
C139
6.8
C129
C140
CR115
.1
1k
6.8
.1
6.8
PWM
11
1
OUT
R148
CR116
4.7k
8
U107
5
4
6
1
2
R133
100k
Q105
3612
R134
R129
R155
R137
20k
36k
CR138
CR137
36k
1M
R131
R150
U110C
36k
2k
LMC550AM
10
+
Q106
8
R154
3600
9
100k
Q103
3600
C148
R132
R130
.1
EP110
100k
100k
WO104
ENABLE
WO116
THERMAL
TEMP OUTPUT
SOURCE
SENSOR
+5V
U106
1
1
2
3
VIN
VOUT
IN
A803
OUT
+
LM78L05
GND
+ C232
C233
C154
C115
GND
+ C153
2
6.8
.1
.1
.1
1
2,3,4,5,6,7
3
R182
R183
75
95.3k
October 1999
Part No. 001-2009-201
CR145
+400V
T105
+ C110
+ C111
R311
R121
3
330
330
100k
100k
PRI
R312
R122
1
100k
100k
R313
R123
100k
100k
R314
R124
100k
100k
R127
1.27k
R159
20
CR123
C136
C197
R161
2.2
2.2
20
3
Q115
CR117
6026
18V
R160
470
6
C137
C228
R163
CR119
2.2
2.2
20
4
R165
20
CR134
5
CR120
18V
Q117
6026
R164
470
R136
R135
100k
13k
R118
C236
18.2k
.1
R138
2.26k
+5V
C234
R139
.001
2.26k
SHUTDOWN
OVER-VOLTAGE
R192
R193
R187
R230
95.3k
U110A
BUFFER/
100
R194
LMC550AM
HYSTERESIS
R185
R186
U110A
1k
10k
R190
CR139
LMC550AM
1
12
+
1k
14
R184
R195
C156
Q120
13
357k
.01
3600
R188
R191
10M
3.3k
+5V
R273
R196
1k
R189
6.81k
J102
2
BATTERY
BACKUP
1
FAN CONTROL
CR112
4
R125
SEC
13
2
R307
0
U108
6
5
1
R169
1k R170
2
R171
R172
C149
820
820
100k
.1
4
R173
C150
16.9k
.01
MAIN OUTPUT VOLTAGE SET/
FEEDBACK
R174
1k
1
8
+400V
CATHODE
REF
U109
R175
2
7
ANODE A
ANODE D
1.8k
3
6
ANODE B
ANODE C
TL431ID
Q116
4
5
NC A
NC B
6351
EP106
67V TO BATTERY BACK-UP
CR118
R272
51
TO SYNC CIRCUIT U104, Q110,
3
Q111, Q112 (2)
C207
APPROXIMATELY 100V PEAK
.0022
1
C210
12
.0022
14
15
L101
CR121
8
16
Q118
R166
R167
R168
6351
10
10
10
+ C143
+ C144
18
CR128
2700
2700
19
C142
20
.001
CR148
CR107
13V
WO105
+26.5V DC
WO106
C225
R156
R274
.01
1k
1k
R262
R157
29.4k
20k
Q114
1
8
CATHODE
REF
3612
U115
R263
C135
2
7
ANODE A
ANODE D
.1
2.49k
R202
3
6
ANODE B
ANODE C
20k
8.2k
TL431ID
4
5
NC A
NC B
8.2k
SHUTDOWN DRIVE
TO U119, U120, U122 (2)
R197
+26.5V
8.2k
10k
FAN CONTROLLER/
DRIVE
8.2k
Q121
3600
J201
2 FAN HIGH
8.2k
1 FAN LOW
800W POWER SUPPLY SCHEMATIC (1 OF 2)
FIGURE10-46
(25.9-27.3V)
+2.5V
R222
0
F102
10A
+26.5V
+ C145
C146
C141
.1
.1
2700
EXTERNAL INPUT
POWER
CONNECTOR
EP111
CGR
BATTERY BACKUP
EP112
GROUND
BATTERY BACKUP
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