I my project, I want to supply a device with a DC tension from 0 to 12V.
I'm using a pwm output from the arduino, then an RC filter to have a DC signal from 0 to 5V. After that, I planed to use an Operational amplifier to have a signal from 0 to 12V.
But now I'm stuck. My device needs up to 1A of power, and the Operational amplifier won't provide such a current. Do you now an IC (like a transistor) that can can do that ?
Accuracy is not an issue here. 10% of error is ok.
Thanks for you help. Kaker.