Hi Mike, offhand I'd guess the rather long flash time indicates not less
resistance, but more - or perhaps more impedance would be closer, since
it's possible that the coil or some other part of the circuit (capacitor?)
has a reactance to rapid discharge. Check the size of the wire used to
wind the coil, 12 Ga. is best, but stiff and cumbersome, 14 Ga. is pretty
good, skinnier than that could be a problem. Next on my list would be the
cap.; they can be designed for rapid discharge as photoflash cap.s are, or
not. Further, but closely related is the Equivalent Series Resistance
(E.S.R) of the capacitor, a high E.S.R. is what you don't want. Many
electronics parts catalogs will list "photoflash" and "low ESR" capacitors.
Regarding the washer toss, explore the degree of off-center placement you
use, try for the best location - that's not cheating, it's just coupling
the energy into the washer as kinetic.
Take care, Malcolm
At 09:27 AM 9/24/03 +00-05, you wrote:
> For anyone who has thought about building a magnetic pulser using the
> small party strobe from radio shack, that particular strobe light has
> just been discontinued. Radio shack still has some ....and can probably
> still order them for you....they are now priced at 10.97 instead of
> 35.00......so the price has never been better for this project. There
> is other special instructions in the archives from Brooks Bradley at
> http://escribe.com/health/thesilverlist/m42428.html The fuller set of
> instructions is at: http://www.royalrife.com/superthumpy.html I am
> currently planning to build 3 for myself and friends.....Robb
I recently finished modifying exactly that unit. It ends up being a
pretty sweet little package, with an extra cable coming out of the back
panel above the line cord and a on-off-momentary spdt switch next to
the pulse rate control that lets me put it in auto mode *or* manually
trigger it.
I substituted a 270 uF 400 and something volt cap, which seems to work,
but I am concerned that I am not getting the power I should.
The "washer test" with a 1/4" ID common washer barely bobbles the
thing. There is a small thump in the coil when it pulses and the flash
tube seems to be very bright and the flash rather prolonged, when you
consider that most of the power is *supposed* to be dumped into the
coil.
I wonder if I have a short in the coil? The resistance is about right,
but I can't be sure otherwise. Is there any better way to test it?
Thanks, all, and my apologies for the OT digression.
Mike D.
[Mike Devour, Citizen, Patriot, Libertarian]
[[email protected] ]
[Speaking only for myself... ]
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