Re: Triggered gap and safety gaps

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

Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ludev-at-videotron.ca>

Hi all

I build a driver from a magazine it used a 2 uf cap and it's more
than enough it give near 1 inch spark, see the link:

http://pages.infinit-dot-net/luc2/ingnit.coil_driver.pdf

the quadrarc was recuperated from a regular dimmer, you probably
could replace the R1 resistor by a variable resistor.

Cheers,

Luc Benard


Tesla list wrote:
> 
> 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
>snip