Re: Questions about current

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

Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>

Hi Matt,

At 09:02 PM 5/6/2001 -0400, you wrote: 
>
> Hi Peter, Matt, All, 
> In a message dated 5/4/01 9:54:27 PM Eastern Daylight Time, tesla-at-pupman-dot-com 
> writes: 
>
>
>>
>> Original poster: "Peter Lawrence by way of Terry Fritz <twftesla-at-uswest-dot-net>
>>
>> " <Peter.Lawrence-at-Sun-dot-com> 
>
>
> Snip 
>
>>
>> 3, you have to be careful when measuring NST outputs or you will blow your 
>> meter. Terry has a good suggestion for current, put a 1kohm/25watt resistor 
>> across the NST output (that's a short circuit for all practical purposes 
>> since the internal res of the NST is 20k-50k) and measure the volts across 
>> the resistor, 1 volt across 1kohm => 1-ma. Terry recommends a 130vac meter 
>> for NSTs up to 120-ma. 
>
>
> Suppose you want to measure more than just the short-circuit current. What 
> would the procedure be then? 
>
>>
>> http://hot-streamer-dot-com/TeslaCoils/Misc/meter.jpg 
>



That meter can be used in-line or in series with the output of the NST too if
the case is well insulated so it can float at high voltage.  I often us it in
series with an NST while a coil is running to monitor the current from the NST.

Cheers,

        Terry