Re: Floating Scopes

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

Original poster: "Crow Leader by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>

Being heat based, it should measure RMS current, so low duty cycle should
not matter. I guess you won't get peak current readings this way. A scope
and low value resistor can measure current peaks of this sort though, just
not at the top of your coil, unless you do the really hard floating scope
trick.

KEN
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, December 07, 2002 11:20 PM
Subject: Re: Floating Scopes


 > Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: "Crow Leader by way of Terry Fritz
 > <twftesla-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>
 >  >
 >  > Assuming current is the main interest, one might just attach some
 >  > thermocouple type RF ammeter between their secondary winding and top
 >  > capacitance. You can read an analog panel meter from some feet away,
don't
 >  > need large scope sized faraday cages and all that.
 >  >
 >  > I don't have any thermocouple type meters anymore, otherwise I'd try it
 >  > myself.
 >  >
 >  > KEN
 >
 > I DO (grab every one I can lay my hands on) and I'll try measuring the
 > current at the BASE of my little coil.  Can't see how it would be
 > radically different from the current into the top terminal.  Because of
 > the low duty factor of the waveform, may not see much.
 >
 > Ed
 >
 >
 >