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D & B, last part II
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From: L.Robertson [SMTP:LWRobertson-at-email.msn-dot-com]
Sent: Thursday, March 05, 1998 7:32 PM
To: Tesla Builders
Subject: D & B, last part II
K. Nagel and all ...
The part of the experiment showing rectification
was done with a normal AC Tesla coil. I used a
15 kV / 60 ma neon transformer.In each HV lead
was a 200 ohm wirewound resistor, which attached
directly to each end of a static spark gap. A 0.012
uF cap and the primary coil complete the circuit.
The big Aerovox cap (1.8 uF / 60 kV ) was connected
between the bottom of the secondary and ground.
You don't need such a big cap. I also used a salt
water cap made from a half-gallon pickle jar - 0.0015 uF
and it charged up just like the Aerovox, only faster.
Anyone who can produce a few inches of spark should
be able to achieve similar results.
The rectification business was an unexpected side effect.
I was really trying to increase spark intensity by driving
some DC down the ionization channel, which was done
by charging up the Aerovox with a separate DC supply.
This DC supply was not connected when I measured the
rectified current.
I must say, though, anyone who needs to produce a real
lightning bolt to ground can pick up these big pulse
discharge caps for cheap at surplus places; and coupled with
a modest Tesla coil generate significant discharge current.
LR