Automatic range selector

Details Automatic range selector Automatic range selector

1975-04-25

1977-01-04

Rolinec, R. V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

G01R 1508

Patent

active

040016838

ABSTRACT:
A device is provided for automatically selecting from a plurality of ranges of a scale of values to which a meter may be made responsive, that range which encompasses the value of an unknown parameter. A meter relay indicates whether the unknown is of greater or lesser value than the range to which the meter is then responsive. The rotatable part of a stepping relay is rotated in one direction or the other in response to the indication from the meter relay. Various positions of the rotatable part are associated with particular scales. Switching means are sensitive to the position of the rotatable part to couple the associated range to the meter.

REFERENCES:
patent: 2973238 (1961-02-01), Herzog
patent: 3016488 (1962-01-01), Smith et al.
patent: 3317834 (1967-05-01), Vitkus
patent: 3399349 (1968-08-01), Davis
patent: 3536998 (1970-10-01), Nordholm
patent: 3577076 (1971-05-01), Fushour et al.

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