At 02:09 PM 10/27/98 -0700, you wrote: >don't they just use an inductive pickup to cause the strobe? So....just >trigger from a different source? I dunno....just throwing out ideas. I'm looking for something small, much smaller than a car's. I need to flash on a 1/8" dia shaft turning 1K-60K RPM with a propeller 1.25" dia. Strobe will be synched either by an IR detector to get a fixed position, or by a pot to allow me to set a speed other than that at which it is turning (looking for it to be out of balance). Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================