Tektronix 453 - Page 69

Circuit Description-Type 453/R453
Line
Input
190-136V,
180-272 v,
AC, RMSI
3-26
I Range Selector I SW 1103
1
I Voltage Selector I SW 1102
I I r---
1 ,' .A POWER I SWl 101
I I ,, . .
I I,,""
+
F1204
+ 150-Volt
Rectifier t--------n
y-----------------------------------------------------------------•+150v
(unreg)
Power
Input
01202,
01212
+ 75-Volt
Rectifier
01172
+ 12-Volt
Rectifier
01142
-12-Volt
Rectifier
01112
6.J-Volt
RMS AC
Source
+
+
F1437
To High-Voltage
Oscillator,
CRT
Circuit
81107
fPOWEi1
L.2!:LI
Fig. 3-17. Power Supply detailed block diagram.
+ 75-Volt
Series
Regulator
01197
+ 12-Volt
Series
Regulator
01167
-12-Volt
Series
Regulator
01137
1---e-t1t---~ + 75 v
1--------~ + 12 v
-12-Volt
Reference
01114
Line trigger signal
to Trigger Generators