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Thread: The Ultimate Cap Dump

  1. #231
    Senior Member Ed_Morbus's Avatar
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    Ok thanks
    youtube video ? Cool Joule is Patrick
    I have corrected SCR is this good circuit
    Attached Images Attached Images
    Last edited by Ed_Morbus; 02-01-2014 at 12:56 PM.

  2. #232
    Put all diodes in opposite direction and connect the LED anode to the minus of the battery (SCR anode).

  3. #233
    Senior Member Ed_Morbus's Avatar
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    Dieter can you give an example in draft
    schematics
    thank you for your help

  4. #234
    Quote Originally Posted by Ed_Morbus View Post
    Ok thanks
    youtube video ? Cool Joule is Patrick
    I have correctedLed Zener SCR Cap Dump.JPG SCR is this good circuit
    Hi ED
    thanks for sharing

    totoalas

  5. #235
    This is an excellent example of do as i do not as i say :-)
    the do is the vid - easy to see how things are hooked up and it is working.
    the say is the schematic.
    cheers,
    Patrick

  6. #236
    Hi ED,

    see your schematic here corrected. If you want (the recommended) pulse voltage 24Volts,
    use a 5.1 Zener and bright white LEDs. ED_Morbus_CapDump.jpg


    Quote Originally Posted by Ed_Morbus View Post
    Dieter can you give an example in draft
    schematics
    thank you for your help

  7. #237
    Senior Member Ed_Morbus's Avatar
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    Dieter thank you

  8. #238
    This will run and run and run and run.....
    Patrick's-Negistor-Light.jpg
    If I place an amp meter it shows 1.23 mA and the voltage drops accordingly.
    When I shunt the amp meter, the voltage goes back up.

    This uses the negistor as I show in an earlier post and vid on this thread.
    You must adjust/balance either and/or

    voltage/cap/resistance

    until you are pulling from the negative region.
    Keep adding LED's... I've added more than are in the pic w/o increasing amp draw and w/o diminishing the light. The more you add the lower the amp draw to a point - it's all a balance. LCR


    Patrick

  9. #239
    Senior Member Tom C's Avatar
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    patrick,

    so you are using an 18 AWG aluminum wire as the coil correct? at 20 ohms length of wire...

    Tom C


    experimental Kits, chargers and solar trackers

  10. #240
    Quote Originally Posted by Tom C View Post
    patrick,

    so you are using an 18 AWG aluminum wire as the coil correct? at 20 ohms length of wire...

    Tom C
    Hi Tom,
    That's it, and the 1.23mA is not off the 15 volts, it's off the negative breakdown differential.
    This can be done w/ almost any coil, I just happen to be playing around w/ the aluminum because of the higher resistance coupled w/ the thick wire. Using the mje's w/ this wire and cap produces a nice spike in the negative zone.
    It's a very simple little ckt. The 2n2222 works as well as the mjl's and several other npn's.
    Kind regards,
    Patrick

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