I've uploaded the NiCad zapper circuit, with a strobe light for
comparison.

http://home.clear.net.nz/pages/joecolquitt/nicdzap.html

Notes with the circuit say that the neon lights when there is
approx 180VDC on the 470u zapping cap. A dead battery
should make a loud pop as the dendrites are vapourised.
Do not leave the unit charged for more than a few minutes
and the 470u may need to be reformed if the unit is not used
for several months

These are some notes from Ned Seith

"Transformer T1 has the appearance of a miniature audio coupling
transformer, however, as can be seen in the attached diagram that
appearance is deceptive and this is a most unusual transformer
probably with a turns ratio between 1:500 to 1:700. The transformer
has the following markings; a white index dot, KMJ  X, G, 18K and
is bound in yellow tape.

Transformer T2 is housed in a red plastic enclosure that is =BC" x =BC
and =BD" tall. There are two wire leads protruding from the bottom
and one wire lead protruding from the top. The only marking is HEI.

The xenon flash tube X1 is about =BC" in diameter and about =BE" tall
with a dark charcoal colored glass. There are two wire leads
protruding from the bottom. There is a copper ribbon band around
the outside of the glass tube. The top wire lead from transformer
T2 is soldered to the copper ribbon on the xenon tube.

I am familiar with the trigger coil and the flash tube from Radio
Shack and these parts are entirely different"

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