Tongs Current Puzzle

Author	Message
zeitfest Guru Joined: 31/07/2019 Location: Australia Posts: 701	Posted: 02:31am 18 Jul 2025       The "clamp"  method measures the magnetic field from the current. There were some that used a ferrite toroid to concentrate the field, usually fine but I think the core can become slightly permanently magnetized sometimes which would give zero level offsets and so on. Maybe try demagnetizing the clamp and re-zero (?)