Digital servo indicator

Details Digital servo indicator Digital servo indicator

1982-02-02

1986-01-28

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Balancing

324130, G01R 1706

Patent

active

045674299

ABSTRACT:
An improved digital servo indicator of the continuous null-balance potentiometric type is disclosed which includes a microcomputer to provide a digital readout of the measured results in the desired engineering unit, or to use the readout in further calculations as desired. The indicator includes a digital-to-analog conversion means using a cascading series of circuits each having a precision resistance element and a pair of MOSFETs for selectively connecting a constant reference voltage to the output through the resistance element to produce the desired analog output.

REFERENCES:
patent: 2880392 (1959-03-01), Paulsen
patent: 3201781 (1965-08-01), Holland
patent: 3473122 (1969-10-01), Holt
patent: 3577075 (1971-05-01), Krygeris

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