Smallest Square Wave Oscillator

468

10:28:49

This beats the classic astable multivibrator by one component (excluding the capacitor at ground since it’s just to make it startup quicker). The square wave is also a bit more square.

published 7 years ago

matt2496

7 years ago

Very elegant circuit!

jason9

7 years ago

Thank you!

kiani

7 years ago

Could it do 50 kHz?!!

Issacsutt

7 years ago

Man I hate using inductors though, they never work for me. Probabaly cause I have to make them by hand, and their not large enough, I don't know.

jason9

7 years ago

It can do 1MHz. Just change the inductor to 4.7uH and the capacitors to 10nF and the 10kOhm resistor to 1kOhm and the sine-wave source to the side to 9MHz.

GomezAddams

7 years ago

That’s pretty cool. I like how you can adjust the duty cycle with the 680 ohm resistor.

jason9

7 years ago

Yeah. I had to figure out whether 820ohms or 680ohms gave a duty cycle closer to 50%. I ended up picking 680.

wegi1

7 years ago

Very nice. Thanks for sharing.

redpistonegon54

7 years ago

It's the second smallest square oscillator after the ninja clock,but the smallest square oscillator without logic gates

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