Hello everyone,

I wanted to get a few other peoples' input on probing techniques for troubleshooting (DR)SSTC H-bridge circuitry. Currently, I have been using a used analogue CRT scope from Tektronics for probing pretty much everything from my driver to the actual power side of the coil(s) that I've been working on. The benefit of the analogue scope has included being able to see very short/transient spikes, as well as the fact that it has an add feature that allows for differential (I believe) measurements. I've been able to tune my primary, probe current waveforms, and even turn phase lead on the driver, but I've been nervous about taking any measurements when powering the bridge via mains. I just bought a Hantek digital storage scope, and an additional 1-100X probe so my old scope will now be my back-up one and provide an additional 2 channels in case I need more than 2 for one test.

My question is simply to inquire as to how everyone else probes their bridge; particularly probing the high side IGBT's and tuning phase lead, and whether or not you use a high voltage differential probe.

Thank you kindly in advance!