Self Oscillating Schmitt Trigger

184

02:15:44

This is a good beginner's project. This was the first circuit i successfully designed and tested, so it works at 100%, if you are a novixe and wanna give it a try. I can write an explanation on how it works is someone wants. Just write so in the comments. Just a quick remark. The left potentiometer controls the frequency, and the emitter potentiometer is to set the oscillations to start. 

published 10 years ago

selman

10 years ago

Isn't, the simpler the better. http://everycircuit.com/circuit/6421383880376320

thebugger

10 years ago

They're different, although they have some similarities. Mine has a different cycle control, with the most left transistor.

hurz

10 years ago

@selman, like your implementation. The headline i would change to "Inverting Schmitt Trigger as RC Oscillator" cuz the core is an inverting schmitt trigger and the 50kOhm + 100nF is the RC network you nedd to let it oscillate. Threshold is also not to bad 3.63V to 8.8V for a 12V power supply. Keep it simple! http://everycircuit.com/circuit/6594206603149312

thebugger

10 years ago

Yes i liked it too, good job. That's a textbook example of an inverting schmitt trigger oscillator

selman

10 years ago

A textbook example ???

thebugger

10 years ago

Yes an inverting schmitt trigger with RC feedback. That's the simplest for of square wave generator.

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