How do I bridge two lm386 OP Amp ICs ? Answered
My idea is to make a electret microphone amplifier powerful enough to drive a speaker. I was using the lm386 because I was familiar with it´s chracteristics and already had a schematic to make a 200 gain amplifier. However, when I tried to use this one to amplify a microphone signal it ended up not providing enough power to drive a 8 ohm speaker (you had to stand right next to the speaker in order to hear something and even when doing so the microphone seemed to only pick up loud noises) despite the results of a similar test made with headphones proved to be more than successful.
Seeing this, I assumed that connecting another lm386 amplifier to the output of the first one would improve the results. Boy i was wrong.
After hearing the unearthly noises that came out of my proyect I decided to do some research on the internet and came up with the bridge and parallel configurations. Nevertheless, i did not find any proper schematics involving two lm386.
It would be of great help if anyone could hand in a schematic or tip on how could I continue from ths point.