Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural ranges – scales or registration rates
Patent
1999-06-18
2000-11-14
Karlsen, Ernest
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural ranges, scales or registration rates
345 83, 345150, G01R 1508, G09G 502
Patent
active
061474835
ABSTRACT:
A digital measuring device of the invention simultaneously exhibits the measured value of an analog signal, by digital indication, and its relation to an analog limit, by color of the digital indication. The measuring device includes an analog comparator, for comparing the value of the analog signal with the analog limit and for developing a comparison accordingly, and a digital measuring device, for converting the measured value of the analog signal to digital data, which are digitally exhibited on a variable color light emitting diode digital display device. The comparison signal is applied to a color control input of the display device, for controlling the color of the digital indication in accordance with the relation of the value of the analog signal to the analog limit.
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Karlsen Ernest
Texas Digital Systems, Inc.
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