GW Instek GPS-1850D - Page 7

AC INPUT
I
Fig. 1 Block Diagram
-5-
REFERENCE
VOLTAGE
SOURCE
U102
AUXILIARY
RECTIFIER AND
FILTER
Dl021
Dl024 ,UlOl
91 05.91 06
REMOTE CONTROL
TI 01 ,S105
TRANsFoRMER
TSl 01
,
V >
R E F E R E N C E
CURRENT
SER @- U103B
MAIN
RECTIFIER
& FILTER Dl01
-01 01 4,ClOl
01 03,4104
*OR"GATE &
DRIVER AMP
Qll2,Qll3
MASTER O/P
-
R101
I<
COMPARATOR
RL101 ,RL102
RELAY
CONTROL
.Q109,0110,Q111
Dl 08,0109
PAR
C
A
o/p
>
CURRENT
-+
COMPARATOR
U105
I
SERIES
REGULATOR
9101,9102
4 b
CURRENT
REFERENCE
VOLTAGE
AMPLIFIER
U103A
-
COMPARATOR
U104
SENSER
AMPLIFIER
U106
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