I'm less worried about getting the voltage up there, that's a boost or flyback design. Maybe that is the solution to the problem though, to boost from 7 to 1kV, and from there drive the coil. A mixed approach would be to set up a booster to charge a cap through an SPDT relay, and then energize the relay to dump the cap into the coil. Contact life is one immediate worry, noise another, and that approach would give me little control over the drive waveform. On Wed, Feb 4, 2015 at 12:56 AM, IVP wrote: > > Perhaps an LCD backlight transformer/inverter. > > There are also the 'tennis racket' style HV electronic fly swatters > which have a little potted inverter to make several 1000 V from > a 1.5V battery > > For that matter, the flash unit in a disposable camera outputs > 250 - 300V > > Voltage doesn't seem to be an issue, getting wattage from a small > device might be. Perhaps a ferrite toroid, as found in SMPS > > Joe > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2015.0.5646 / Virus Database: 4281/9054 - Release Date: 02/04/15 > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .