Re: DC Powered Large Tesla Coils

["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>

You may want to add some sort of "small" resistor of even just 10 ohms
between your power supply and the rest of the coil to lower possibly
destructive resonant frequencies from charging your cap and other switching.
Ths resistor just lowers the RC constant of the circuit to a value safe for
the reverse recover of any rectifiers in your power supply.

It seems this is what may have destroyed my previous rectifier stack, and
why some have success with fast recovery diodes that are otherwise not too
exciting.

KEN
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, November 22, 2002 4:32 PM
Subject: DC Powered Large Tesla Coils


 > Original poster: "Mccauley, Daniel H by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
 >
 >
 >
 > I finally got my High Voltage resonant-mode DC power supply to work this
 > past week and am ready to begin thinking
 > how I am going to incorporate this into the DC Tesla Coil I am planning on
 > building.
 > Using a dummy load set-up, I managed to get a sustained output of 2000mA
at
 > 45.5kVDC.  However, I am planning on
 > running the supply at a much lower current at about 500mA at 45kVDC.  My
 > current plan calls for a large conventional
 > type tesla coil running with a large ARSG.
 >
 > My question is, that I wanted to get some advice, 'lessons learned',
etc...
 > from people who have already ventured into
 > the DC powered tesla coil arena.  I'm current working on some very
detailed
 > simulations to see the effects of varying
 > BPS and cap size is for something like this.
 >
 > Any advice, comments, appreciated!
 >
 > Thanks
 > Dan
 >
 >
 >