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Fence Charger — Parallax Forums

Fence Charger

koentonkoenton Posts: 8
edited 2013-03-10 17:55 in General Discussion
Can anyone tell me how I can build a 12v fence charger out of a 12v battery and 12v coil + something else? See someone trying to sell info

on ebay to do this. Thanks Will

Comments

  • kwinnkwinn Posts: 8,697
    edited 2013-03-10 17:01
    koenton wrote: »
    Can anyone tell me how I can build a 12v fence charger out of a 12v battery and 12v coil + something else? See someone trying to sell info on ebay to do this. Thanks Will

    I'm assuming you mean a car ignition coil by "12V coil". That can be done with a fairly simple circuit consisting of a switching transistor, capacitor, choke, and the oscillator circuit. A 555 timer is probably the simplest part for the oscillator. Google "555 ignition coil driver" for some circuit schematics.
  • jmgjmg Posts: 15,173
    edited 2013-03-10 17:17
    koenton wrote: »
    Can anyone tell me how I can build a 12v fence charger out of a 12v battery and 12v coil + something else? See someone trying to sell info

    on ebay to do this.

    If you mean Electric Fence Units, there are safety standards around Peak Voltage, Repeat rate, and Energy Allowed.
  • Peter KG6LSEPeter KG6LSE Posts: 1,383
    edited 2013-03-10 17:55
    I would NEVER put a device I made in a open area that makes HV like that,,,,,

    As some one whom has had his own close calls with HV Trust me a car coil CAN kill..... P,QRS,T waves in the heart are Very sensitive .


    The truth is the ones you can buy are done with a Very pre defined I/T curve as to Zap and not kill a horse .
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