PWM USING 555

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PWM USING 555

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The circuit is a variable duty cycle, constant frequency, astable multivibrator using the 555 timer. Diodes Dchg and Ddchg separates the charge and discharge paths respectively. They also maintain a symmetrical voltage loss along the two paths. Potentiometer Rdcadj adjust the duty cycle with slight effect on frequency. When the potentiometer is adjusted the resistance subtracted from one path is added to the other path. Thus the mark and space time of the output can be varied while maintaining their sum almost constant. This results in variable duty cycly and constant frequency output signal.

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Creator

Rajat2455

35 Circuits

Date Created

3 years, 4 months ago

Last Modified

3 years, 4 months ago

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