Compaq LA36 Service Manual page 128

Noise
AC
filter
inlet
SW
Fuse
Power supply unit
B A B
Surge
Smooth-
current
Rectifier
ing
preven-
circuit
circuit
tion
circuit
Figure 5.41 Power supply block diagram
C
Main
switch- Rectifier
ing circuit
circuit
Rectifier
circuit
3-terminal
regulator
Smooth-
ing
circuit
Smooth-
ing
circuit
Over-
voltage
detec-
tion
circuit
Power stop
control
circuit
+5 V
+34 V
PWSTOP