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112
[11
i
Feed back circuit
t-i
Out-put detection
circuit
*
t
--—— ____ ___
li/-
DCvoltage
High frequenc)
square wave
—
"U_n-n
Change DC to square wave
IPohotocoupleretc.1
j;;j
:=
-+
out-put
~
Transformer
u
~
AC+
DC
y
rectify
(
circuit
J
. _Di;je-
-
Electric
T
capacitor
etc.
3
Rush current
protection
circuit
+
+24V
—
1
Lightning
serge
protection
circuit
--
Varistor,
Arrestor
etc.
4
AC -
DC
rectify circuit
1
5
--R--
Switching
circuit
—
—
—
—
I
EMI Filter
circuit
Power
thermistor
etc.
1------
-- -——
Diode bridge
erectric
capacitor for
rectify
'--
i
MOS-FET
etc.
8
AC -
DC
g
: - -
:J
+5V
rectify
circuit
GND
_DiGtie- -
Electric
cap&tor
10
AC+ DC
GND
rectify
circuit
-1
w
_D16ie-
-
9
Droper
circuit
--—— __
Regulator
Ic
i
X
cap,
Y cap,
choke coil
etc.
J
L-1
Electric
cap#or
[
I
—
I
,
IT—————J
—1
AC voltage
DC voltage
++—
AC ~ DC rectify circuit
AC voltage
DC voltage
m
+—
wH+~ '"""'
DC voltage
DC voltage
—
+—
Step down
%l%Ft
Step down
&i
AC ~ DC rectify circuit
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Table of Contents
Troubleshooting
