Re: Alarm system

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

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

Hi Dr. R,

I have also had the thought of adding a microwave horn in series with the
gap.  Wire lengths can be very long for hardwire systems, (15m and up) and
short for radio controlled systems.  At least the coil should produce enough
harmonics to key a reciever.  An out of tune secondary would help as well.
Most of the squibs that I have are the 12V pyro squibs for theatrical pyro,
which won't work.  Most caps will fire 1.5V range if I remember correctly.
I should check with the manufacturers about getting some squibs that are as
sensitive as caps for testing.

It was smart putting the phenolic in the van!  I got there as it was just
sprinkling.  It would have been soaked if I had put it under your car.  I
got that soaked just getting out of the van.

David E Weiss


 > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 >
 >
 >
 > Dave:
 >
 > It requires a certain amount of I^2 * t to set off an elec. blasting cap.
 > For blasting safety planning, a 25 mA maximum is required, however, this
is
 > a large margin of safety.  For actual initiation a current of 250 mA
minimum
 > is required per cap.
 >
 > I doubt you would get this induced current at any distance over 25 feet
with
 > a TC unless the "receiving circuit" consisting of the cap lead wires just
 > happens to be the resonant freq of your coil.  You could try SSTC and
 > sweeping a range to get it to work.
 >
 > When you drop by for the caps I will give you some elec. squibs (burn not
 > blast) to use for testing this range.
 >
 > You looked like a drowned rat at EAA so I thought it might work out better
 > to get the phenolic at a later date.
 >
 > Dr. Resonance
 >
 > Resonance Research Corporation
 > E11870 Shadylane Rd.
 > Baraboo   WI   53913
 >
 >
 >