Help... no background in electrical engineering

Discussion in 'General Electronics Chat' started by HoTDoGCorpSE, Jun 28, 2013.

  1. HoTDoGCorpSE

    Thread Starter New Member

    Jun 28, 2013
    2
    0
    First of all hi, I'm new here and i have zero BG in EE. I am a bio-psychology student and i just had this idea in my head for the longest time and i finally came around to doing the tedious circuitry work of my idea. It may have been done before but I would like to just get this thing out of my head lol
    just a few questions.

    1. What exactly am i doing here...
    2. I need to be able to discharge the cap with a microswitch that will be actuated by a rotating object. So how would i go about doing that?
    3. I need the cap to be discharged at a certain level before ultimately being discharge. again, how do i do that lol
    I have a feeling i may have to do software work huh...

    I'll just keep it to 3 questions for now and i apologize for the ridiculously large photo.

    [​IMG]
     
  2. absf

    Senior Member

    Dec 29, 2010
    1,490
    371
    Are you sure you have copied it correctly from the circuit where you've got it?

    Is "I7" a constant current source of 1A or is it an Amp Meter ?
    1N4733A is a 5V zener & 1N4742A is a 12V zener.

    Looks like a SCR made up of a PNP/NPN BJT pair....

    To discharge the C6 capacitor, I'd put a NPN transistor across it and provide the bias through the micro-switch and +9V.

    Allen
     
  3. HoTDoGCorpSE

    Thread Starter New Member

    Jun 28, 2013
    2
    0
    Yea i got rid of that little cluster, i was just trying something out and it seemed to work but ended up being useless lol
    Here is what i am trying to do.
    I'm trying to turn an electromagnet on and off almost instantly. Just long enough to repel a magnet rotating around an axis (N - N or S - S; poles)

    here's the old-new layout
    [​IMG]
     
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