Oops ? To A.C Kuntz

• To: tesla-at-pupman-dot-com
• Subject: Oops ? To A.C Kuntz
• From: RWB355-at-aol-dot-com (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Tue, 06 Oct 1998 17:05:02 -0600
• Approved: terryf-at-verinet-dot-com

Hello A.C.

SNIP
0.5ohm?  But I calculate that if you are drawing 50amp to power your 
 coil then that resistor will make 1250 watts!  This seems like the wrong 
 way to do things, why doesn't the inductor just work.
 
SNIP

Whoa, Hold it.

If you re-read Doc R.īs reply you will see he says use a resistor (0.3-0.5
ohms) AND (!!) an inductor.
 Of course your resistor canīt be a 1/4 watt run of the mill Radio Shack type.
Most Teslafreaks are using oven elements or other commercial high wattage
resistors.
If you use only the inductor you will get an erratic spark gap fire (as many
coilers have posted). 

The magnetic flux in an inductor changes very rapidly as you change the load
(ever gotten zapped by a relay coil while switching the energizing current on
and off ?). This makes for a very erratic spark output. If you connect your
pig (or other HV power transformer) to a Jacobbīs Ladder you will feel a
pretty heavy thump as the Ladder cuts in an out.

A resistive load canīt follow this quick change, so a series R-L  circuit will
effectively dampen, making for a smoother output.

hope this cleared up the mystery,
Coiler greets from germany,
Reinhard

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