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  1. U

    Controlling High Currents with Microcontroller

    Yeah, the load is pair of Helmholtz coils... I was thinking I'd have to use some kind of filter, but I'm not sure exactly how that would work. Is there some sort of voltage converter whose output could be adjusted in proportion to a PWM signal from the Arduino? We've tried an op amp (OPA548 I...
  2. U

    Controlling High Currents with Microcontroller

    I'm not exactly sure where to find a PWM like what you're describing... any suggestions? Thanks for all your help!
  3. U

    Controlling High Currents with Microcontroller

    I would like to deliver a more or less continuous range of currents up to 3 A to a ~5 ohm load. Our power supply is a 6 V or 12 V NiMH battery, and we would like to be able to use an Arduino Mega to control the current (in the 0 to 3 A range) that is supplied. What's the best way to go about...
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