I have built the above preamp on the left to use with the freq counter library but I seem to get no amplification.
Looking with a scope the circuit works and when I put a 1khz signal on the input I see a 1khz signal on the output, If i remove the power the output drops off so it seems to be working.
However I see no change in amplitude I assumed that is what is meant to happen ?
Also crude I know but for a test I just connected a speaker to the input and then the output and both sounded the same.
You will have to excuse my ignorance and I havenever delved in to any signal amplification before.
Thanks for any help you can provide.