Re: Capacitor test results

• To: tesla-at-pupman-dot-com
• Subject: Re: Capacitor test results
• From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
• Date: Mon, 10 Jun 1996 08:23:44 +1200

On the neon transformer test....

>     The rated current is with a RESISTIVE load!  With
> a capacitive load the current will be higher, because the
> capacitive reactance cancels part of the inductive reactance
> of the transformer.  The approximate reactance of the transformer
> is 12000/.03 = 400,000 ohms.  Subtracting 106,000 you get
> 294 k.  The net current is thus 41 ma, and the voltage 
> across the capacitor should reach around 4300.  Surely enough for
> a test.

I am currently using a 25nF cap with a 12kV 60mA transformer. I can 
set the total gap length to about 1/4" before it ceases firing. There
is an element of resonant charging going on in my system as evidenced
by both the gap setting (around 12kV) and the <100Hz firing.

Malcolm

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