Alan wrote: > I don't think [Don Croft] sells a $50 zapper anymore, does he?
Yeah, as you point out in answer to your own question, he endorses a few people who are making zappers of the same basic electrical and physical design without the metaphysical components whose value one can argue 'til the cows come home but could only be tested by careful studies (and possibly not even then! <grin>). > Do you know the specs on this zapper? (eg. frequency, voltage, current) I know it runs off a 9V battery, puts out a 15 Hertz square wave, and open circuit voltage is supposed to be a bit less than 4.5 volts, indicating slightly less than a 50% duty cycle, If I am remembering correctly what I've read on Don's site. I assume there is at least a current limiting resistor in series with the output to keep the current in a safe and comfortable range. You'd have to test that assumption by, for instance, putting your voltmeter across the electrodes and then maybe touching both with your dampened fingers and seeing how much the voltage drops. If it does drop, then there's at least a resistor in line. Find the value of resistance that drops the voltage by half and you've got the value of the current limiter. For any more detail than that I'd have to take mine apart, which I'm not planning to do any time soon. <smile> Even I wouldn't baulk at one of the units for less than $40, though. It'd be easier than building one unless you already have the electronics skills and a well stuffed junk box. Be well! Mike D. -- The Silver List is a moderated forum for discussing Colloidal Silver. Rules and Instructions: http://www.silverlist.org Unsubscribe: <mailto:silver-list-requ...@eskimo.com?subject=unsubscribe> Archives: http://www.mail-archive.com/silver-list@eskimo.com/maillist.html Off-Topic discussions: <mailto:silver-off-topic-l...@eskimo.com> List Owner: Mike Devour <mailto:mdev...@eskimo.com>