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RE- Neons....Paralell or Series? (fwd)
---------- Forwarded message ----------
Date: Fri, 28 Nov 1997 18:39:00 GMT
From: Robert Michaels <robert.michaels-at-online.sme-dot-org>
To: tesla-at-pupman-dot-com
Subject: RE- Neons....Paralell or Series?
Irrespective of "series" or "parallel" there is something
"seri-ous"ly skewed in your post.
Dealing with rms voltages is of limited value in high-voltage
engineering work. I strongly urge you to consider only
peak voltage. In the case of 13.2-kv (rms) transformer, the
peak voltage is 18.67-kv. For the 15-kv (rms) transformer
the peak voltage 21.1-kv. If you use rms - you are "square",
whereas you and your system should perform at their "peak"
(okay?).
Not knowing the voltages with which you are working is very
poor technique. Get a 6-volt transformer (Radio Shack, or
elsewhere). Feed the 6 volts into the 120-v. primary of
each of your neon transformers. Measure the resultant
voltage at each neon transformer secondary. Multiply that
voltage by 28.28. The result is the peak voltage output
for the secondary of that transformer.
Neon transformers may be =paralleled= with utter impunity
if they have the same voltage ratings. The resultant output
power increase is highly beneficial in Tesla work.
Neon transformers in =series= are a fool's delight. The
secondary-to-primary voltage stress is equal to the sum
of the =peak= voltages. This in a transformer which is
already seriously over stressed in Tesla applications.
The boost in voltage is of limited value:
It is input =power= which puts the POW! in
Tesla coils. (Input =voltage= only put "vol" in
them - which do you want in your finished
coil, POW! or vol?)
Raising the primary voltage in a Tesla coil results in
a geometric increase in expense in capacitor ratings,
insulation/isolation problems, and safety.
POW! is how -- in Detroit, USA
Robert Michaels
TL>From: Matthew Mills[SMTP:megavolt-at-usa-dot-net]
TL>Subject: Neons....Paralell or Series?
TL>Hi, I just brought home my old Beacon Radio 15Kv 30mA Neon
[ ... ]
TL>I have heard that neons can damage each other if they are paralleled and
TL>one has a lwer voltage output than the other. Mine are both rated the
TL>same but when I got them I was told that they had dropped some of their
TL>rated output and that was why I could have them. There is a label on one
TL>of them which says 13.2Kv. Can I remedy this? can I still use them in
TL>parallel in a tesla circuit?
TL>Also, can I series link two neons or does this put 30kv through each
TL>winding and kill them?
TL>Please help,
TL>Matt.