>1F @ 5V is only about 12.5 Joules, right? That's not very >much energy (a common disposable camera photoflash is about >8J at high voltages, and those are regularly discharged >through pretty much a dead short.) A camera flash often uses the inductance of the wires from the capacitor to the tube as the current limiting impedance when the tube flashes. When my father was servicing camera equipment some of the flash guns seemed to have inordinately long wires to the tube for this reason. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body