Hulda Clark says (pg 15 The Cure For All Diseases ),
"Any positively offset frequency kills all bacteria, viruses and parasites simultaniously given sufficient voltage (5 to 10 volts), duration (seven minutes), and frequency (anything from 10 Hz to 500,000 Hz)."
The chip fully drives a 1k resister and besides you're arguing with success, the ZP zapper works just as well as any other zapper.
Hulda Clark has never to my knowlage said that a digital chip was not effective.
The age of the chip was not what I had in mind. By advanced, I ment efficiant and easy to use. Just plug in the battery and zap. Easy. This zapper it about as small as half a tootsie roll, uses less battery (batteries last up to six months), is durable, takes no more instruction than is provided in Hulda Clark 's book, and is very cost effective. Efficiant.