RE: DC Resonance Charging Advice Sought

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

Original poster: "Dave Kyle by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dave-at-kyleusa-dot-com>

As usual the discussions got me thinking and after digging out my 7 KV
Sodium hexafluoride relay I remembered it was double throw eliminating my
concerns about shorting the power supply. In the power off state the caps
will be connected to a 100K 100 Watt resistor which will discharge the caps
in 10 seconds or less. In the power on state the resister will be switched
out of the circuit and the power supply connected.

Cool, I was hoping to use this relay somewhere.

Dave

=========================================
Dave Kyle
Austin, TX USA
Email: dave-at-kyleusa-dot-com


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, August 13, 2003 6:02 PM
To: tesla-at-pupman-dot-com
Subject: Re: DC Resonance Charging Advice Sought

Original poster: "Bert Hickman by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<bert.hickman-at-aquila-dot-net>

Dave,

You could simply kill two birds with one stone - connect all of your DC
storage caps in series so that your bank capacitance is 1.75 uF instead of
7 uF. Leave the existing pairs of 100 meg resistors across each capacitor
(for DC voltage balancing across the chain) and add three 100 Meg bleeders
in parallel across the entire bank. This will reduce the stored energy in
the bank to 1/4 of what it was previously - still more than adequate. It
will also drop Tau down to ~50 seconds so that the bank voltage decay to a
safe level of less than 45 volts after five minutes.

Best regards,

-- Bert --