Re: simple questions

• To: tesla-at-pupman-dot-com
• Subject: Re: simple questions
• From: "J. B. Weazle McCreath" <weazle-at-hurontel.on.ca> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Thu, 13 Apr 2000 21:05:59 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

At 07:55 AM 13/04/00 -0600, you wrote:
>Original Poster: "Trent Mullins" <neontrent-at-earthlink-dot-net> 
>
>Hello All,
> 
>I have a couple simple questions I hope I can get answers to.
> 
>1.  How important is it to have all the gaps spaced perfectly in a RQ TCBOR
>gap?
>
TRY TO GET THEM AS CLOSE AS YOU CAN, BUT A FEW THOU OFF WON'T HURT.
AS THEY RUN THEY WILL EACH DEVELOPE DIFFERENT PITS AND DEPOSITS
THAT WILL EFFECT THE SPACING IN ANY CASE.
> 
>2.  What size variac controller is advisable for a system with a 15kV 120mA
>supply?  How do you calculate that size?
>
WATTS = VOLTS X AMPS, SO 15 KV TIMES .12 AMPS IS 1800 WATTS.  DIVIDING THAT
BY THE 120 VOLT PRIMARY RATING YIELDS 15 AMPS.  YOU'LL WANT SOME RESERVE
SO I'D GO WITH AT LEAST A 20 AMP UNIT.  YOU'LL LIKELY BUILD A BIGGER COIL
SOMETIME, SO GET AS BIG A UNIT AS YOU CAN AFFORD.
> 
>3.  Do NST's in parallel need to have the cases connected?  (I read that they
>do somewhere?)
>
MOST HAVE THE CENTER TAP OF THE SECONDARY CONNECTED TO THE CASE, SO YES
YOU SHOULD JOIN THE CASES TOGETHER.
> 
>4.  Can line filters be run in parallel to increase the rating?
>
PROVIDED THEY ARE THE SAME MAKE AND MODEL, PARALLELING SHOULDN'T BE
A PROBLEM.  YOU COULD TIE THE LINE AND NEUTRAL TERMINALS OF EACH
FILTER TOGETHER AND USE ONE FILTER IN EACH LEG OF THE SUPPLY LEADS.
> 
>Many thanks to all the talented people that help me with this project,
>One more step in my Tesla journey...
>Trent Mullins
> 
WE ALL LIKE TO HELP EACH OTHER OUT.  YOU'LL GET YOUR TURN TO HELP
SOMEONE DOWN THE ROAD AS WELL.


73, Weazle, VE3EAR/VE3WZL

Listening: 147.030+ and 442.075+
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