The controllable silicon fast tester circuit

Published:2011/6/6 1:20:00 Author:Seven | Keyword: controllable silicon, fast tester | From:SeekIC

In the figure is the controllable silicon fast tester circuit. The tester consists of pulse signal generator, close-loop conducting circuit, LED and controllable silicon SCR, etc. The pulse signal generator is a multi-resonate oscillator which consists of the time-based circuit 555, R1, R2 and C, etc, the oscillating frequency is f=1.44/(R1+2R2)C. The oscillating frequency of the parameter in the figure is about 1Hz. As R1<<R2, so the charging time of C is t(charging)=0.693(R1+R2)C, and it is close to the discharging time which is 0.693R2C, so the duty cycle of the output pulse is close to 1:1.



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