My new O-scope and Secondary

From:  Barton B. Anderson [SMTP:mopar-at-mn.uswest-dot-net]
Sent:  Wednesday, April 15, 1998 11:34 PM
To:  Tesla List
Subject:  Re: My new O-scope and Secondary

There was a time when I use to kill scopes due to my ignorance or lack of
attention to the peak voltage rating of the scope. For direct connection
measurements, I would suggest investing in a HV probe. They are commonly rated
around 80kv capability. They are also easily repairable. Usually the 1 Meg
resistor dies and can be replaced.

Tesla List wrote:

> ----------
> From:  ESchulz531 [SMTP:ESchulz531-at-aol-dot-com]
> Sent:  Wednesday, April 15, 1998 9:26 PM
> To:  tesla-at-pupman-dot-com
> Subject:  My new O-scope and Secondary
> All,
>      I just bought an oscilloscope and I was wondering how I could measure my
> primary voltage with it, use lots of resistance?  Any good ideas I could use
> it for, as in for my tesla coil?  I found out that my secondary resonates at
> 220 kHz, not the 660 kHz that I had though, so I guess it was at the third
> harmonic.  I was getting 18" sparks at 660khz using 900 VA, tomorrow I will
> see what happens when I lower the frequency to 220khz by using my new large
> primary.
> Thanks,
> Erik