i'm an eager electronics noob, so sorry if this is a dumb question...
I'm trying to build vactrols controlled by audio signals to control other circuits.
So far this configuration with a 2n5457
seems to work best on breadboard (i really dont trust breadboards).
How can that be? And is it due to the weakness of the signal coming out of my phone or would it apply to an amplified signal aswell?
Thanks and greetings, Jochen
Edit: refined image...
Edit2: After finding i will probably not be able to design a circuit as complex as that and the use (light vactrol in circuit bent device) isnt worth getting into electronic engineering for a month, if that would ever happen, I tried another way with an op-amp.
Back to "i hate breadboards"... at first it worked, not satisfiyngly, but it did. Then not anymore (Led lights up all the time). Unfortunately i always seem to fail with these simulation softwares aswell...
Whenever there is an Input signal, there would be a difference between the Inputs and the Opamp would Amplify (ideally to ~5V, therefore the pot in the feedback loop), while the Schottky diodes for lower Voltage drop (input signal might not be larger than 1-2V p2p) might even filter out some noise (at least in my head)