Electronic Engineering Schematics
Build a DMM or Digital Multi Meter
The indispensable Digital
Moving Coil Voltmeters, Ammeters and Resistance Bridge were
combined to make AVO Meters a field instrument. They were used
alongside hand cranked meggers, current-potential transformers.
Valve based Electronic Instrumentation with Nixie Tube Displays
cannot be forgotten, taking readings from nixie tube displays
can be more satisfying than reading a plain LCD. The Vacuum
Florescent 7 segment display array was popular till very recent
times in some cash registers, calculators.
or Digital Multi Meter
Then came Semiconductor Transistor Multimeters with a Moving
coil display, after that arrived LED Display based Benchtop
Semi-Portable DMM, which were "IC" Technology. These
consumed more power and big in size. Now you have CMOS, LSI and
ASIC based DMM which are light, small and batteries last longer
PC based Virtual DMM, Voltage modules for PLC or ATE and
Wireless or optic Voltage Transmitters are new and advanced form
of Electrical Parameter Measurement and Recording.
Source Files for above DMM Project 20008.zip
20th Mar 2020