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j. FW signal
A
R719
27K(1W)
R720
27K(1W)
D709
RD6.2ESA82
C720
R728
2.7K
0.01
Fig. 15 Waveform of each section
The AC input voltage is full-wave rectified by D704 ~ D707. Byturning
ON/OFF Q703, the photo coupler is synchronized to performON/OFF
operations.
This signal synchronized with the AC voltage waveform is transmitted
to the secondary side by the photo coupler to turnON/OFF Q704
similarly, providing the FW signal synchronized withthe AC voltage
waveform.
1
2
3
4
C717
0.01
C718
R722
R723
12K
2.2K
100(PF)
R724
1K
R729
Q703
10K(1/4W)
2SC1815
PC703
R730
TLP621
10K(1/4W)
Fig. 14 FW signal circuit
(A) Point voltage
waveform
GND
FW signal output
waveform
0V
L710
TSL1110
D712
-332KR17
ERA 9102
C719
47(PF)
R731
10(H)
Primary side
Secondary side
9 – 26
F704
24V2
250V/3A
CN702-15,16,17
R744
F705
10(H)
24V1
250V/3A
CN702-11,12,13,14
R745
F706
24V4
33K
250V/5A
CN702-20,22
F707
24V3
250V/3A
CN702-18,19
FW
CN703-17
Fig.21
C735
RET
R746
0.1/50V(PPE)
CN702-1~10
2.7K
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