On Sat, 20 Nov 2004 09:31:21 -0600 "Phil Clements" <philk5pc@tyler.net>
writes:
>
> Subject: Re: [Amps] Step-start Calculation Problem:
>
<snip>
> Observing the H.V. meter upon power-up will tell us
> when the correct delay has been applied for any given set of P.S.
> components.
>
> (((73)))
> Phil, K5PC
>
Hi Phil & the Step Start Set,
I've been using a SS circuit that is controlled by the output voltage,
connected through a suitable divider, to a TL431 which drives the SS
relay. Using this method, the circuit "knows" when a suitable delay
has elapsed.
The TL431 may drive up to a 100 mA relay coil directly. An ancillary
PNP transistor can increase this capability as necessary.
73 & Good morning,
Marv WC6W
*
*
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