Timer 555

Thread Starter

ac_dc_1

Joined Jan 27, 2013
74
Hi

I am trying to draw the wave forms(V output and Vc1 capacitor C1) of the circuit..What does this circuit do?It generates a pulse with constant size?
How can i determine the frequency of oscilation and the duty-cycle of the output tension?

Thanks
 

tracecom

Joined Apr 16, 2010
3,944
It's an astable multivibrator. What determines the duty cycle and the pulse length? Do you know the formulae, and do you know what effect D1 has?

And by the way, pin 4 of the 555 should be tied high when it is not in use.
 
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