Here are some photos of some HRC-derived "zappers" that I designed and built that have an output that holds well under varying loads and has a LED indicator intensity in direct proportion to the zapping handhold current, providing feedback as to wetness of paper towels and circuit continuity.
Copyright © 2008 James E. D. Cline. Permission granted to reproduce providing inclusion of a link back to this site and acknowledgment of the author and concept designer James E. D. Cline.
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