EEVblog #544 – Fluke 5450A Resistance Calibrator Teardown

What’s inside a vintage Fluke 5450A Resistance Calibrator used in cal labs to calibrate multimeters?
Schematic HERE
Coto reed relay
High Resistance measurement with a relay matrix:
https://www.youtube.com/watch?v=fs2MfTW4o_Q
https://www.youtube.com/watch?v=-mavHYV-H6o

Forum HERE

Podcast: Download