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Re: Microwave caps, ideas (fwd)

---------- Forwarded message ----------
Date: Sat, 7 Jul 2007 18:07:07 -0500
From: D.C. Cox <resonance@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Microwave caps, ideas (fwd)

I've used this same 1 kV multiplier with a pair of MOTs to make a dandy 2.5 
kJ soda can crusher, ignitron triggered.  Used a 10 kV 50 uF cap --- variac 
adjusted the voltage level and thus the kJ rating prior to firing.  The 
trigger circuit for the National 7703 ignitron was a 2.5 uF cap charged to 2 
kV and is applied across the ignitron igniter using a mercury relay (a bit 
over rated for 2 kV),but it seems to work fine without problems).

Dr. Resonance
Resonance Research Corp.

----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, July 07, 2007 2:35 PM
Subject: Re: Microwave caps, ideas (fwd)

> ---------- Forwarded message ----------
> Date: Sat, 7 Jul 2007 20:14:47 +0100
> From: Chris Rutherford <chrismrutherford@xxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Microwave caps, ideas (fwd)
> I once used a microwave capacitors and diodes in a voltage multiplier
> configuration. i.e. taking output of microwave transformer to produce +/-
> 5Kv i.e. 11KV potential.   For this type of supply to be useful you  have 
> to
> limit the output current with either an inductor or resistor.  If you 
> don't
> limit the output the diodes blow really easily.
> Here is a similar system using smaller capacitors.  With this type of 
> power
> supply you also have to be careful not to destroy the output inductors.
> Chris
> On 7/7/07, Tesla list <tesla@xxxxxxxxxx> wrote:
>> ---------- Forwarded message ----------
>> Date: Sat, 07 Jul 2007 18:32:08 +0000
>> From: Jeff Behary <jeff_behary@xxxxxxxxxxx>
>> To: tesla@xxxxxxxxxx
>> Subject: RE: Microwave caps, ideas (fwd)
>> Scott,
>> They work really well for the smaller antique Tesla Coils "Violet Ray"
>> machines/etc.  The reason is that the original machines used waxed-paper
>> caps that were rolled and formed around a self-induction coil between the
>> bobbin heads and kind of "squashed to fit" inside of a hard rubber or
>> bakelite housings.  These days there are no modern caps that are small
>> enough to fit inside these units (can't "squash" a plastic cap too
>> easy!)...by coincidence  the microwave caps normally fit well once 
>> removed
>> from the metal cans and cut to size.  Normally one of these caps will 
>> make
>> a
>> dozen or more Violet Ray capacitors.
>> I made a few of them this way before, there is a good photo of them next
>> to
>> my cat Io:
>> http://www.electrotherapymuseum.com/Articles/VioletRayConstruction.htm
>> For this style Tesla Coil they work really well.
>> Jeff Behary, c/o
>> The Turn Of The Century Electrotherapy Museum
>> http://www.electrotherapymuseum.com
>> _________________________________________________________________
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