Marciokoko:
Ok I connected some jumpers and got their ohms to be 1Ω. The issue Im dealing with is that because I had a split power supply set up and Im connecting the opamp's GND to vcc- on the split supply, I have some things connected to ground and others connected to vcc-.Connected to Ground (midway between vcc- and vcc+):
mic
speaker
10uF cap on the way to v+ opamp
opamp negative feedback loopConnected to Vcc- from split supply
GND opamp
100uF (Vo) thru 10k R
2n3906 collectorChrisTenone, I read your reply #87 but i want to make sure I understand it right before firing this up. According to what I have, GND on opamp would be connected to -9V as well as the 100uF (Vo) thru 10k R and the 2n3906. Should I move these to real ground which will actually be 0V because it is in the middle of the 2 9V batteries?
Thanks
Most opamps use a dual power supply, V+ and V-. If you make V- equal to zero volts, it is referred to as a single supply opamp. You can use the LM324 either way, you just won't get any negative voltage output with a single supply.