Early Proof of Concept

A project log for SDO Milliohm Meter v1

A minimal 4-wire milliohm meter with 4.5 digit display

kuba-sunderland-oberKuba Sunderland-Ober 05/30/2023 at 16:210 Comments

Just to see how close to reality the idea was, I put together the current source and the sense amplifier using a dual LM2904 on a protoboard. It behaved reasonably close to what was required, and I proceeded with a PCB layout for v1 rev 1.