Variable color digital multimeter

Details Variable color digital multimeter Variable color digital multimeter

1990-12-14

1992-06-16

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

324 96, 324114, 340703, G01R 1508, G09G 330

Patent

active

051227339

ABSTRACT:
A multimeter with variable color digital display indicates measured values in a digital format and in a variable color. The multimeter includes a color control circuit for controlling the color of the digital display in accordance with the measurement quantity, method, unit, mode, function, range, location, modifier, control, limits, and the like. A color converter circuit is disclosed for converting analog voltage to variable color.

REFERENCES:
patent: 3873979 (1975-03-01), Craford et al.
patent: 4388589 (1983-06-01), Molldrem, Jr.
patent: 4794383 (1988-12-01), Havel

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