I'm venturing into building switching PSUs. Voltages on the order of 5-20v, current 1-10A.
To be optimised would be the efficiency of the power MOSFET(s), hence Vgs and Vds rise and fall times.
Ive got a 20MHz 48Ms/s Hantek USB scope - the cheapest I think. An ancient 500kHz Jupiter function generator. And FWIW, plenty to build quick circuits out of.
How can I do this cheaply? The oscilloscope would be great I think, if it weren't for its inability to zoom in on edges! But useless if switching only represents 2% of the time? Might it be suggested I invest in other equipment? Or is there a clever little an analog / hybrid digital circuit I could bread-board up? (straight forward, effective and cheap - optimistic?)