Path: utzoo!attcan!ncrcan!brambo!wwg
From: wwg@brambo.UUCP (Warren W. Gay)
Newsgroups: sci.electronics
Subject: Re: HIGH VOLTAGE STUN GUNS'S
Keywords: HIGH VOLTAGE, STUN GUNS
Message-ID: <570@brambo.UUCP>
Date: 12 Jun 89 19:12:26 GMT
References: <426@aucis.UUCP> <19134@cos.com> <1434@ns.network.com>
Reply-To: wwg@brambo.UUCP (Warren W. Gay)
Organization: Bramalea Software Inc., Bramalea, Ont.
Lines: 22

In article <1434@ns.network.com> logajan@ns.network.com (John Logajan) writes:
>> >I have the schematics to build a stun gun that delivers 75,000 volts at 
>> >25,000 watts from an input of 9.8 volts DC.
>>...
>battery.  Consider that 75,000 volts applied to 220,000 ohms will cause
>330 milliamps -- thus 25,000 watts.  It might only be able to do this
>for a picosecond, but none the less, the initial instantaneous power
>would in fact be 25,000 watts!
>-- 
>- John M. Logajan @ Network Systems; 7600 Boone Ave; Brooklyn Park, MN 55428  -

You have not taken the internal source resistance into account. When you do, 
you might find that the *current* is considerably lower.

What is the internal resistance of a typical high voltage capacitor that
would be used in a "stun gun"?  This parameter probably varies with charge,
but say a ceramic capacitor is used-- I suspect a very noticable internal
resistance, even at full charge.  

Engineering types -- comments?

73s de VE3WWG