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Re: Sam Barros' Latest experiments:-)
to: Dan
Bad idea Dan. All energy discharge caps should be charged in less than 10
seconds for optimum lifetime. Slow charging is not recommended. Charge
for 5 time constants and then fire as soon as practical thereafter.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: Sam Barros' Latest experiments:-)
> Date: Sunday, January 17, 1999 6:56 AM
>
> Original Poster: "danial stocks" <diode-at-hotmail-dot-com>
>
>
> >
> >Original Poster: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net>
> >
> >The National type 7703 will hold off 20 kV (most up to 25 kV) and work
> as
> >great ignitors for a cap discharge. We use a 20 kV 50 MFD cap with
> them to
> >blow up wires 10-12 feet long. Trigger with a 2 MFD cap charged to 2.5
> kV
> >DC.
>
> I trig'd ignitrons quite easily with .5uf, 1500v. Spec from mullard data
> states 150v, 10amp pulse will trig all their ignitrons. ( and man do I
> wish I had 50uf / 20kv!)
> >Another, less expensive, way to discharge your cap --- use a solenoid
> to
> >move a ground ball approx 2 inches to make contact with the lower end
> of
> >the charged wire. Be sure to use a relay to disconnect charging power
> >supply first so you don't blow your diodes.
>
> Or you could use a med- high val or resistance in series with charging
> caps - limit charge current to caps to 1 -10 ma . Takes a little time to
> charge but there is a bit of isolation between psu & cct if something
> should go wrong
>
> Dan
> >
>
>
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