Automatic range selection-type analog tester

Details Automatic range selection-type analog tester Automatic range selection-type analog tester

1993-04-20

1994-06-07

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

324116, G01R 1508

Patent

active

053193059

ABSTRACT:
An automatic range selection-type analog tester capable of automatically switching to the optimum measuring range even if the measurand of an object to be measured is undetermined. A range select signal generating circuit is designed to generate a range select signal for selecting one of a plurality of voltage dividers of a range selector circuit in such a manner that the divided voltage output of the object divided through the range selector circuit comes into a predetermined range and also a range display displays the corresponding measuring range in accordance with the range select signal.

REFERENCES:
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patent: 2643344 (1953-06-01), McLaren et al.
patent: 2889518 (1959-06-01), Hudson et al.
patent: 3237102 (1966-02-01), Newell
patent: 3958178 (1976-05-01), Mueller et al.
patent: 4096434 (1978-06-01), Meyer
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patent: 5119019 (1992-06-01), George
patent: 5218290 (1993-06-01), Beckert et al.
Intersil-A046 Building a Battery Operated Auto Ranging DVM . . . 106 (Pub. by . . . Inc.) pp. 1-4, 1980 (no month).
"Converter used to produce an autoranging digital multimeter"; Electron, No. 118; Jun. 9, 1977; pp. 52, 54.

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