RE: Triggered gap and safety gaps

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

Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Gary.Lau-at-compaq-dot-com>

With regard to using an inductor in series with the HV trigger electrode - I
recall reading advice in an application note to minimize the trigger cable
lead length (i.e. locate the transformer as near as possible to the gap) so
as to minimize capacitive loading on it, this to achieve the highest
possible trigger-pulse rise time.  I suspect that adding an inductor will be
counterproductive to this end.  The Perkin Elmer web site has some good info
on this, see http://opto.perkinelmer-dot-com/library/papers/tp10.htm (but I
can't seem to locate the specific advice to minimize lead capacitance).

Looking at the circuit configuration for the trigger circuit, it sure looks
like HV transients will be coupled through the trigger transformer and
ultimately to the mains lines.  This looks like a very good place to add
some MOV's and EMI filters.  

Gary Lau
MA, USA



>Original poster: "Metlicka Marc by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<mystuffs-at-orwell-dot-net>
>
>mike,
>i have used the coil\dimmer circuit for quite a while now and i haven't
>noticed any kind of kickback from this circuit?
>some things i have tried is put two wraps of each mains lead through a
>ferrite toroid and one turn of the hv trigger lead around a flyback
>core, whether it helps?
>if you're worried about the mains, i haven't seen any problems myself.
>maybe as more coilers try it, more info will come in?
>if you don't feel secure in using it, please don't, safety relies on
>sureness.
>marc


>> 
>> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<CHURCHMON-at-aol-dot-com>
>> 
>> Hi Johnathon and list ,
>> I too am concerned that if I build one of these triggered gaps that I
could
>> get back
>> lash from the tank circuit if I come in contact with the dimmer knob.
>> Has any one else experienced any from these type of trigger circuits ?
>> 
>> Thanks ,
>> Mike Church(CHURCHMON)-at-aol