Antique Electronics and Vintage Solid State

HP 456A AC Current Probe

I wanted a simple project to take a break from working on my RCA WV-98C VTVMs. I’ve had a Hewlett Packard 456A AC Current Probe sitting around for a while. 


The 456A is a clip-on AC current probe. It is comprised of a clip-on probe and a current-to-voltage amplifier and converter. …

© Steve Byan 2011-2019