To answer a couple of questions About NiCds - when a NiCd battery dies due to whiskers shorting out the cell, a common practice is to discharge a large high voltage cap into the battery - blows out the whiskers and restores function. Voltage- about 300V with about 100Mfd capacitor I have used these with a voltage trippler to run a Geiger counter Also for simpler high voltage experiments you can just wire several unmodified cameras in series. CAUTION you may well be able to kill yourself. solarwind wrote: > > On Fri, Jul 24, 2009 at 12:43 PM, Al Shinn wrote: > > >> >> They also make pretty good Ni Cd short blasters for those of us who only >> >> have 5 and 12 V supplies. careful though, they WILL shock the heck out >> >> of you. >> >> > > > > Please explain. -- Looking forward, Al Shinn -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist