The circuit below is supposed to turn on a LED when the microphone input reaches these levels: 1V, 3V, 5V, 7V. What this circuit does in real life is when we turn on the power, all 4 LEDs light up. ...
I'm trying to connect a contact mic to an arduino. My knowledge in electronics is sparse, so please bear with me. I got a couple of lm833n audio dual opamps, which I'd like to put to use. I'm still ...
I have a pair of specialist condenser mics with a nominal output impedance of 3.6k Ohm that I would like to interface with mic preamps with nominal input impedance of 2.2k Ohm. Does this impedance ...
What are the relative merits of using inverting/non-inverting op-amp configurations for a microphone preamp? While searching for microphone preamp schematics based on op-amps, I have found both ...
I'm trying to use a mic from 10 feet away. Background: for my senior project I would like to talk to a computer to run scripts, but I want to talk to the mic throughout the house. So I need to be ...
I've asked a couple of questions relating to this project the past couple of days, but I cant seem to put it all together. I hooked up an electret mic into an opamp and gave output to my arduino ...
I followed the mic + op-Amp part of this schematic exactly using an Lm386 chip: https://randomskk.net/projects/lightstrip/schematic.pdf and sent the output from the op-amp into a pin on an Arduino ...