Hi im new to arduinos but I am in school doing electrical engineering so I have knowledge of electrical concepts. I would like to know how I would build a voltage amplifier to amplify the voltage coming out of the headphone jack of my macbook pro? Also where would I start(I already know how to make an amplifier circuits with jfets mpf102 transistor, and have the circuit numbers I just need to know how I would use the Arduino to make a port like connect to amplify the signal)?
You want to use a microprocessor to do what you can do far easier with a $5 IC??
Weedpharma
how I would use the Arduino to make a port like connect to amplify the signal)?
Do you know the difference between digital and analog?
Just use an op amp.