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Re: TSG construction article
Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>
Tesla list wrote:
> Original poster: "Ted Rosenberg by way of Terry Fritz
> There have been several postings regarding the placement of the resistors in
> the triggered-gap schematic. Let me review them again. Originally, based on
> Marc's input to me, the resistors were across the 120V. When I powered the
> system, both resistors became incredibly hot.
> After discussing the situation with Terry on an emergency basis (Marc was
> unavailable and I was desparate due to a very tight schedule) it was decided
> to move them between the dimmer output and the HEI input, in series on the
> HOT line. This worked just fine for my requirements although it does seem to
> restrict the range of the dimmer control. But, again, the gap fires and my
> coil ran perfectly throughout the heavy duty cycle of this year's haunted
> I have made the changes to the schematic. I merely have to distill the
> diagram to a new PDF and e-mail it to Terry for him to post it. But my time
> at home still gets away from me and so for that I apologize. I will move the
> task to the front burner and advise all when it has been accomplished.
> In the meantime, simply move the two paralleled resistors as indicated above
> and you'll have no problem. No other changes were required.
> Safety First
1. I never could see any reason for those resistors, particularly placed
across the line where all they do is use up power and get hot.
2. I still see no reason to use them in series. The only possible good
they could do would be to limit the peak line current spikes.