555 Astable oscillator

Posted on Jan 8, 2013

This free-running multivibrator uses an external current sink to discharge the timing capacitor, C. Therefore, interval ^ may easily be 1000 the pulse duration, t1( which defines a positive output. Capacitor voltage, V^, is a negative going ramp with exponential rise during the pulse output periods.

555 Astable oscillator
Click here to download the full size of the above Circuit.

This as is has low duty cycle.

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