I have tried this but the lm324 can not supply very much current. And my scope has very low impedance so they always make a two milimeter large shape on the scope.hopefully I'll get some transistors and set them in a darlinton configeration so I can finally see something :p
@vk2zay Each oscillator is made of two inverting integrators. If you integrate a sine wave, you get a negative cosine wave and integrating that cosine wave again gives you a sine wave. Close the loop and it oscillates.
@256byteram its an oscilloscope i made myself.:)
jdflyback 2 months ago
I have tried this but the lm324 can not supply very much current. And my scope has very low impedance so they always make a two milimeter large shape on the scope.hopefully I'll get some transistors and set them in a darlinton configeration so I can finally see something :p
jdflyback 2 months ago
@jdflyback Weird. Perhaps your oscilloscope is set so the inputs are terminated? 50 ohms is typical.
256byteram 2 months ago
How do the oscillators work? Phase shift with taps to extract the quadrature signals?
vk2zay 6 months ago
@vk2zay Each oscillator is made of two inverting integrators. If you integrate a sine wave, you get a negative cosine wave and integrating that cosine wave again gives you a sine wave. Close the loop and it oscillates.
256byteram 6 months ago
Very neat.
FPGAPete 6 months ago
Why is there a crease in the footage?
Desmaad 6 months ago
@Desmaad It's the crossover distortion in the amplifiers I'm using, because they're not very good.
256byteram 6 months ago