Fig. 3-25 1/1 "Zero-Cross" Waveforms - Canon NP-70 Service Manual

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NP-70
3-63
24VAC
Q231 Base
Voltage
Q231
Conduction
C232
Charge
Voltage
TP231 5
Voltage
Heater
Voltage
Fig. 3-25
depicts the waveforms for the operation of the 1 /4 zero-cross circuit.
Bias voltage
of Q231
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pN
OFF
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Ir
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,~
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1
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~
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3
i
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j
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5
i
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/
~
2
`4
/
Fig. 3-25 1/1 "Zero-Cross" Waveforms
© CANON INC.
Second Printing-June, 1974

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