[Prev][Next][Index][Thread]
High Voltage Test Equipment
----------
From: John H. Couture [SMTP:couturejh-at-worldnet.att-dot-net]
Sent: Saturday, March 14, 1998 3:17 PM
To: Tesla List
Subject: Re: High Voltage Test Equipment
At 12:03 AM 3/12/98 -0600, you wrote:
>
>----------
>From: Homer Lea [SMTP:HomerLea-at-aol-dot-com]
>Sent: Wednesday, March 11, 1998 8:31 AM
>To: tesla-at-pupman-dot-com
>Subject: Re: High Voltage Test Equipment
>
>In a message dated 98-03-11 00:39:00 EST, you write:
>
>> Have you done the calcs for your voltage divider?
>>
>> A one microamp load on a small 100 KV coil will drop the sec voltage to a
>> very small amount and make the measurement useless. The calcs are:
>
>John
>I did some calcs. to see that I would draw just a few ua. I don't see how 1
>ua can kill the coil output. Even 20 ua with a 5000 megohm divider just draws
>only (I^2)(R)= 2 watts of power at peak voltage??????? I thought if we put in
>500watts we would get out 100? watts or so.
>
>jim
---------------------------------------------------------------------
Jim -
With Tesla coil OUTPUTS don't think in terms of RMS power. Think in terms
of Instantaneous power. One million volts in one microsecond is only one
microamp at one watt RMS. Two microamps is doubling the load and would have
a mojor effect on the voltage regulation. The efficiency is another matter.
John Couture