Magneto voltage limiter

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  • Pierre95
    Senior Member
    • Feb 2016
    • 65
    • France

    #21
    Re: Magneto voltage limiter

    The challenge with LEDs is that to take advantage of both positive and negative half cycles, a full rectifier is necessary. And a full wave rectifier would create a new ground separated from the chassis leading to cut the regular ground (chassis) connection from the concerned pin of the LED and bringing a new wire from the rectifier's ground.

    Would need a huge capacitor if he's insisting on incandescent
    Why a huge capacitor? Thermal inertia of incandescent lamp should smoothen any low rev flickering.

    The only thing I'm a bit concerned about is the reverse breakdown
    Agree. Also the reverse voltage between base and emitter of the transistors shall not exceed the maximum ratings value. A protection diode could avoid it.

    and add a digital speedo!
    That could be some great improvement!

    Comment

    • eccerr0r
      Solder Sloth
      • Nov 2012
      • 8701
      • USA

      #22
      Re: Magneto voltage limiter

      It wasn't for the flickering problem - it's being a small "battery" for preventing low voltage dimming for a while when you're running slow or stop. That is, unless the voltage from the magneto is always above your desired voltage setpoint plus dropout?

      Comment

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