Re: Energy storage in primary?

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

Original poster: "Jolyon Vater Cox by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, January 31, 2003 2:59 PM
Subject: Re: Energy storage in primary?


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

 > The quenching switch (SW2) should have the same low ON voltage as the main
 > current interrupting switch (SW1). The sequence of operation would be to
 > close SW1 and SW2

Why is it necessary to close SW2 during the inductor charging period -when
no energy is going into the capacitor?

The capacitor begins charging the moment the astable goes low turns SW1
off -triggering the mono to turn SW2 on.

Is there likely to be a delay between SW1 opening and SW2 closing that would
leave the capacitor disconnected from the primary for the short period
before the mono turned SW2 on?

If the latter is so, wouldn't and inverting stage (another 555 with pins 6
and 2 tied together?) between the astable and the mono solve the problem?

Jolyon