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Re: Capacitor Safety Discharge Method (fwd)



---------- Forwarded message ----------
Date: Mon, 06 Aug 2007 20:38:11 +0000
From: nancylavoie@xxxxxxxxxxx
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Capacitor Safety Discharge Method (fwd)

Hi, Chris. Thats exactly what I was trying to get an answer to in the
previous posts and I think that if you kind of read between the lines in
Bart's reply, you can see that its probably okay to do if you use bleeder
resistors and discharge the cap after the charge has bled off. What I
wanted to use was a Ross Engineering relay rated at 40 kv (normally open
contacts) and wire it across the terminals of the capacitor and
resistors.It would then just be a simple matter of flipping a switch and
doing the work of the screwdriver in a much safer fashion.Anyone see a
problem? Wyatt

-------------- Original message -------------- 
From: "Tesla list" <tesla@xxxxxxxxxx> 

> 
> ---------- Forwarded message ---------- 
> Date: Mon, 06 Aug 2007 01:53:57 -0400 
> From: Crispy 
> To: tesla@xxxxxxxxxx 
> Subject: Capacitor Safety Discharge Method 
> 
> Hello, 
> 
> In light of the recent discussion about the necessity of a manual 
> discharge for the tank capacitor in addition to bleeder resistors, I've 
> been considering an easier method of manual discharge than the 
> stick-a-screwdriver-in-the-spark-gap method for my coil. I was thinking 
> about an electronic method, and here's the idea. Would it be possible 
> to have a linear pull-style solenoid with an electrode that, when 
> powered, would retract its electrode from another static electrode, to 
> act as the safety discharge? The normal state (no electricity applied) 
> would be to have the contacts together, and the capacitor shorted. Of 
> course, the electrodes would have to be insulated from the solenoid. 
> Also, would it be possible to immerse this under oil, if the gap 
> provided by the solenoid was insufficient to prevent sparking over in 
> normal operation, or would the oil coat the electrodes and somehow 
> prevent safety discharge? 
> 
> Thanks, 
> Chris 
> 
> 
>