Re: Trig. circuit experiment

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

Original poster: "J. B. Weazle McCreath by way of Terry Fritz <twftesla-at-qwest-dot-net>" <weazle-at-hurontel.on.ca>


At 06:33 AM 04/08/01 -0600, you wrote:
>
>Original poster: "harvey norris by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <harvich-at-yahoo-dot-com>
>
big snip
>
>Is not the dimmers intended function to only supply
>the triggered voltage when the input is reversing
>polarity, or near its ZERO CROSSInG PT? If the dimmer
>is actuating the arc at 75% of (its) full amperage
>level, isnt that  kind of overkill of the original
>idea for the dimmer to act only at the proper time of
>the cycle, as Marc M indicated?
>HDN: needing some triggering knowledge?
>

Perhaps I didn't word my comments correctly.  What I meant was that 
I could vary the firing time in a range that roughly equalled 75%
of the MECHANICAL limits of the dimmer control.  At both lower and
upper limits things got a bit flakey, but over most of the control
range it was quite stable and I could adjust the "timing" easily.


73, Weazle, VE3EAR/VE3WZL

Listening: 147.030+ and 442.075+
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