Sawtooth waveform using 555

136

01:47:22

Sawtooth waveform for 1kHz using 555

published 9 years ago

gerardjourde

9 years ago

Très bon très belle dent de scie bravo

hurz

9 years ago

In reality its double the frequency. It wont go down to zero volt. 2kHz and a peak swing from 3V to 6V at 9V supply!

eectronicforktu

9 years ago

It can be made 0V .. Thàts the purpose of diode.. Check this internal circuit. http://everycircuit.com/circuit/6241271490805760

hurz

9 years ago

Yes sure it can be made zero, however a real 555 wont go down to zero! It would stop at the lower threshold!!!

hurz

9 years ago

Check this, it might help http://everycircuit.com/circuit/6753892830806016

eectronicforktu

9 years ago

This works with real 555... Not exactly zero but 0. 7V.. The diode does rhe trick.. When out goes low the diode conducts and pulls down the control voltage to around 0.7V. This xhanges the lower threshold to 0. 7V instead of 3V..

hurz

9 years ago

Ok, 0.7 is not zero and as you can see in simulation its going down to zero even without diode! Indeed, would be interesting to check this diode threshold control trick in reality. Keep it up!

hurz

9 years ago

How about this? http://everycircuit.com/circuit/5472820622000128

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