I’m making a bank of analog sine wave oscillators and I’m interested in keeping the design compact.
I’ve started by making a Wien Bridge oscillator. As I’m working from a single power supply and I’m trying to keep the design small, I’ve been using the LM386n-1 IC.
I’ll be using the oscillators to do some additive audio synthesis, maybe some FM and I’ll probably need some of the oscillators as LFOs.
My questions are-
Is this a suitable approach for making a compact analog sine wave oscillator?
Also, how would you suggest I control the frequency, which component value should be changed to achieve this? - I’ve tried messing with all the resistors to change the pitch, but they all seem to be interdependent.
And this is what my implementation looks like, I don’t have a suitable incandescent bulb so I’ve just replaced it with a 1KΩ pot. I’m still not sure what I’ll use in the final circuit as AGC, suggestions are welcome.