Sawtooth wave phase shift trigger circuit
Source: InternetPublisher:aerobotics Keywords: Trigger circuit phase-shift trigger sawtooth wave Updated: 2021/02/12
The sawtooth wave phase-shifting trigger circuit is composed of PNP tubes, and the synchronous phase-shifting circuit is composed of transistor VT1 and capacitor C. Constant current charging is performed to form a negative sawtooth transition
voltage , which is superimposed with the negative control voltage ‰ (adjusted by RP2) and the positive offset voltage Ub (adjusted by RP4) through R3, R, and Rs.
The control transistor VT2 changes from cutoff to switching. is the moment of conduction. The circuit principle is as shown in the figure
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