Re: Current Transformer problems

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi Matt,
          I presume you loaded the secondary winding with a burden 
resistor. Didn't you?

Regards,
Malcolm


On 26 Nov 2001, at 20:51, Tesla list wrote:

> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Mddeming-at-aol-dot-com>
> 
> Hi All,
>          This question is for anyone with experience in use of current
> transformers and O-scopes. 
> I made a quick current transformer by winding 20 ft (~150 turns) of #20
magnet
> wire around a 1-inch ID ferrite toroid When I hook it to my scope I get a
wave
> pattern that is very distorted with overtones, 2f, 4f, etc., and pulses of HF
> ringing.
> This is on the inlet side of the control box without the coil or cap
attached.
> The entire lab is lined with grounded wire mesh except the front door.  
> 1. What am I doing wrong?
> 2. How can I fix it?
> Matt D.
> 
> 
>