Current probes for oscilloscopes are nice to have, but very pricey. I vaguely recall someone somewhere sometime saying that you can make a pretty good one up from certain computer scrap parts (some component in the disk drive, perhaps?) and there may also be a sensor in the power supply section that deals with power factor correction, I gather. I need something that can sense down to say 10mA or better that's (ideally) fine enough to sample individual pcb traces a few mm apart. Any ideas?
- posted
8 years ago