10MHz BW? P/S PARD (ripple and noise) specs are usually specified assuming a 20MHz BW. That said, the P/Ss and VRMs should have switch frequencies of under 1MHz (P/Ss using transistors as switching devices are probably <50KHz), so 10MHz BW is easily sufficient for detecting switch frequency ripple or oscillation due to elevated ESR. Fluke has some nice 60MHz handheld scopes (190 series) for under $2,000USD.
PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
****************************
To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
****************************
Comment