Re: Alarm system

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com> 

Hi Robert,

A ten cap machine puts out 45V.  At 2 Ohms per cap and 6.4 Ohms in the
firing wire (1 spool = 500' each way of 18ga ), gives about 3.4V per cap at
1.7A (1.5A minimum for any blasting circuit).  At the minimum 1.5 A the
voltage drops to 3V.  All caps are connected in series.  Military
galvanometers use a .9V battery, and there are warnings in FM 5-25 that any
other battery could set one off.   The above system would have approximatly
1120' of wire in it total to act as an antenna with the standard 12' lead
lengths on the caps.

David E Weiss

 > Original poster: "robert heidlebaugh" <rheidlebaugh-at-desertgate-dot-com>
 >
 > Ah yes ,,,there is no thrill quite like getting your teeth jurked loose
with
 > a 500v 500cap det generator. .. Keep in mind a silver bridge wire in a
squib
 > is a dead short that is vaporized by current from the charged capacitor in
 > the detonator generator. A 1u capacitor charged up to 500+ volts that is
 > short circuit dumped into the lines when the "T" handle hits bottem or the
 > twist handle hits the peg stop . That is real current. Even the high
voltage
 > squibs take 250 volts or more to fire and current of the charged
capascitor
 > to fire the curcuit. A tc coil has lots of voltage to overcone a big gap,
 > but you still nead current from a toroid, capacitor , or something els to
 > store the current. Voltage is good, but current dose work.
 >        A micro wave horn neads a tuned stub to inject the Ac voltage into
the
 > horn at the proper frequency to match the horn. Even the high POWER of a
 > magnetron tube requires a current loupe to inject Ac into a horn.
 >       Robert   H
 > --
 >