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Controlling HHO Generator — Parallax Forums

Controlling HHO Generator

jbalatjbalat Posts: 96
edited 2009-08-27 00:15 in BASIC Stamp
I know this is similar to driving the DC motor thread but I think it warrants its own thread ?

I have a PWM Pal which I would like to use to power a Hydrogen generator with up to 40 Amps from the Car Battery

The trick is to keep it under 30 Amps

The problem is that as the generator heats up it wants to draw more Amps.

I wanted to use a temperature sensor to then back off the Duty Cycle so as to not exceed a maximum temperature (say 50 deg C)

Do you think this is possible with the stamp ?

Comments

  • dev/nulldev/null Posts: 381
    edited 2009-08-24 00:51
    Of course. Try using a DS1620. It measures temp from -55°C to +125°C.

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  • jbalatjbalat Posts: 96
    edited 2009-08-25 23:54
    Cant I just use a low cost thermistor. I assume that generates a certain resistance which can be read via rctime ?
  • FranklinFranklin Posts: 4,747
    edited 2009-08-26 22:40
    jbalat said...
    Cant I just use a low cost thermistor. I assume that generates a certain resistance which can be read via rctime ?
    Sure you can.

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  • jbalatjbalat Posts: 96
    edited 2009-08-27 00:15
    Ok that was the easy bit..

    Now anyone know what mosfets I need and what circuit I need to drive them ???

    ....and make sure they dont draw more than 30 Amps...


    P.S. You can see that I electronics is not my strong point. Sorry.
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