I want to control a few sensors on my car...

[Qaiphyx]

They run of small flucuating voltages at around a max to 5 Volts. I would like to add voltage. I was wondering if there would be a circuit that would allow me to pull volts from the 12 volt battery in the car and run is through a POT to limit the volts and then something to cut all the amps and then run it on the sensor feedback wire to increase my voltage. Or will this not work since its coming from the same battery supply?

 

[Qaiphyx]

...basically I just need to make a circuit that adds voltage, but I cant use a transformer cause the voltage flucuates.

 

[3v0]

Maybe you are looking for an op amp. It can be used to rescale an input voltage.

 

[Qaiphyx]

Maybe you are looking for an op amp. It can be used to rescale an input voltage.

This will work. What OP Amps would i look in to for this?

 

[Qaiphyx]

Anyone have any op amp circuits for this?