Maker Pro
Maker Pro

ESR Meter

F

Fred Bloggs

Jan 1, 1970
0
This meter patent filed around 1979 pre-dates Parker by quite a few
years, and you can see from its write-up that the basic operational
ideas have been borrowed: US4216424. Carl Vette put this into production
with his Creative Electronics, and changed things a bit from his
original application. The schematic, schematic write-up, and advertising
lit with a picture of the meter can be found here:
http://bama.edebris.com/manuals/creative/esr
The circuit uses an interesting "peak-to-peak" detector among other
things and looks more like a real design. Apparently Vette did a lot of
consulting with local universities, contributing his expertise towards
precision electronics fixturing for mostly biological research
experiments- not bad for a repairman.

A few years later Terry Cook patented US4795966 for Sencore, and this
one looks a lot like the Parker meter.
 
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