Home made degaussing coil.

Discussion in 'General Electronics Chat' started by Rocket.Man, Mar 28, 2015.

  1. Rocket.Man

    Thread Starter New Member

    Jan 1, 2012
    Dont let little kids play with a magnet near your TV or old monitor. LOL.

    I built this degaussing coil 5.5" diameter, 1/4" thick, wound on the lathe, #24 enamel coated copper wire, about 1000 turns, glued together with polyurethane varnish just like they do in transformers.

    I used a light bulb as a resistor. The light bulb, coil, electrical cord are all in series. Not knowing what to expect I used a tiny 25 watt light bulb first and plugged the cord into the wall. The degaussing coil worked very well but did not completely fix the TV. Next I tried a 100 watt light bulb, WOW what a difference in the magnetic field. I had to move back 21 feet to be far enough away so the magnet field did not effect the TV. That freaks me out that means there is a 20 foot diameter circle magnet field around that coil. Next I tried a 60 and 40 watt bulb and finally got the TV and the old computer monitor degaussed.

    Last edited: Mar 28, 2015
  2. MaxHeadRoom


    Jul 18, 2013
    I just wound a coil of 14g enamel wire 18" in dia. and plug direct in to 120v.
    The wire bundle was around 1.5" in dia.
    The secret is to gradually move back from the front of the CRT and at the last moment turn the coil at right angles and switch off the D-G.
    Last edited: Mar 28, 2015
  3. OBW0549

    Well-Known Member

    Mar 2, 2015
    Nice coil. How many turns?

    I wonder how well it would work for degaussing hand tools...
  4. wayneh


    Sep 9, 2010
    Nice looking coil!