Archive for July 6, 2026

TSP #340 – This 1960’s Plotter Mechanism is Cool! Simpson Multicorder 604 Analog Meter Experiments

In this quick episode Shahriar takes a look at a very unusual analog multimeter & plotter combo instrument. Despite the main multimeter being completely passive, it still manages to plot the measured results onto a rolling paper.

But how did the engineers solve this unusual problem?

Please consider supporting The Signal Path:
https://www.TheSignalPath.com/Donate
https://www.Patreon.com/TheSignalPath

Other links:
https://www.TheSignalPath.com
https://www.Twitter.com/TheSignalPath