[Prev][Next][Index][Thread]

Re: Filter Torroids Question



On Mon, 4 Mar 1996 13:00:20 +0700, you wrote:


>Hi Jim,
>
>> >As far as the voltage rating on the wire, you shouldn't need to worry
>> >too much.  These ferite toroids are non-conductive.
>> 
>> WRONG, they are semiconductive. They vary between 10 ohms/meter and 10^5
>> ohms/meter! If you don't bleave me, put one on ground and connect the
>> secondary of your neon to it about 1/8" away!
>
>Actually Jim, I was talking specifically about those toroids that many of
>us have purchased lately from Hosfelt electronics.  These particular toroids
>are plastic coated.  So, they are non-conductive.  I still covered mine with
>several layers of electrical tape.  But you are correct, ferrite is a
>semiconductor.
>
>My apology for being vague,
>Scott Myers
No problem,
	I ordered 10. I've only wound 2 so far. I put 1 layer of
electrical tape on them. I've had no problems yet at 15Kv -at- 60ma.

Now, my sons bike 30" away, that's another thread!

	jim

p.s.	 I've been an EE for 20 years and got the supprise/shock  of
my life last week when the wire started arcing to the ferrite core. I
KNEW they were insulators! Well so much for preconceptions.

		EE	1978 UCB
		Who's Who in the West
		Who's Who in the World......

 I hate it when I SLAM head first  into the hard wall of reality! or
worse, the even harder wall of engineering ART!

		jim