Multimeter with automatic function-setting

Details Multimeter with automatic function-setting Multimeter with automatic function-setting

1994-09-16

1996-09-17

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

324713, G01R 1508

Patent

active

055571972

ABSTRACT:
A multimeter with automatic measurement function setting and automatic recognition of measurement range includes circuitry having a high input resistance for carrying out the recognition of the type of electrical parameter to be measured. When the parameter being measured is recognized as an impedance, however, a low input resistance is automatically switched on, whereupon the magnitude of the impedance is measured at low input resistance and then is displayed, and if the range of measurement changes, the measurement procedure is repeated from the beginning.

REFERENCES:
patent: 5027057 (1991-06-01), Mageland
patent: 5144154 (1992-09-01), Banaska
patent: 5250893 (1993-10-01), Gambill

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