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ante

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Posts posted by ante

  1. Hi,

    A few things to note:
    I don’t believe the voltage will go all the way down to zero, perhaps 0.5V but that might not be important for you? The resistor R12 kind of decides the minimum voltage here and this resistor should have a 5W rating. R11 (the shunt) can be made by paralleling two 0.15R (2W) since 0.075R is not easy to find.  The LM10 is a slow horse and the transistor T3 protects the circuit from destructive over current. Someone has written 42V on the diagram but the text says 36V transformer and the later is the correct value I believe. ;)

  2. Hi John,

    Apology accepted, I can understand what you where trying to do for Steven but perhaps he needs some help to moderate the HV board, at least for a while. As you mentioned earlier Stevens spelling is not 100% and he sounded a bit unsure about this himself too. But you are absolutely right; Steven is the most frequent contributor to the HV board, no doubt!

  3. Ok, if you must go purely mechanic you must use some power which is equivalent to the work that’s needed to be done. A solenoid (plunger) needs power and I don’t know how much since I don’t have the formula clear. Are you in shortage of power to spend in this project? I suggested the propane / igniter variant since this will consume very little power from the project. I don’t think a robotic arm or similar would be an option here.

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