Method and apparatus for converting a conventional DC multimeter

Details Method and apparatus for converting a conventional DC multimeter Method and apparatus for converting a conventional DC multimeter

1992-01-10

1993-09-28

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

324650, 324691, G01R 1512, G01R 2702

Patent

active

052489345

ABSTRACT:
An R/Z converter for use with a conventional digital multimeter (DMM) provides enhanced capabilities of the DMM in measuring impedance and other functions where DC measurements are undesirable. The R/Z converter converts the test voltage of a conventional DMM into a square wave that is applied to the device being tested. The voltage from the tested device is seen by the DMM as an average DC value that is proportional to the impedance of the device.

REFERENCES:
patent: 3689830 (1972-09-01), Caldwell et al.
patent: 3753094 (1973-08-01), Furuishi et al.
patent: 3851641 (1974-12-01), Toole et al.
patent: 3873911 (1975-03-01), Champlin

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