RE: TSG construction article

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

Original poster: "Ted Rosenberg by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>

Ed (and anyone else who is listening):
I certainly agree with you about placing the resistors across the line.
Frankly, I think there was a communication breakdown. I believe Marc said,
sometime ago, that it was some sort of accident that they got used at all.
Now, as for their usefulness in series between the dimmer and the HEI hot
line, well, honestly I admit to lacking the theoretical powers to say yea or
nay. In such cases I graciously defer to the others on the list. I just
build the stuff and cross my fingers like everyone else. I've been fortunate
so far that the money sucker works so well  :)).
I am thinking of transferring the discrete components to a small printed
circuit board quick connectors. if anyone can tell me for sure that the
resistors can be left out, it means less work for me.

Safety First

Ted

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Monday, December 17, 2001 11:28 PM
To: tesla-at-pupman-dot-com
Subject: 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
<twftesla-at-qwest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>
> 
> Jonathan:
> 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
> house.
> 
> 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
> Ted

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.

Ed