Steven E Blight Deceased16100 Cadillac Ranch Pl, Tucson, AZ 85739

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16100 Cadillac Ranch Pl, Tucson, AZ 85739 (520) 818-1579

3777 Mainsail Blvd, Tucson, AZ 85739 (520) 818-1579

5249 Eaglestone Loop, Tucson, AZ 85742 (520) 744-3185

Catalina, AZ

Highlands Ranch, CO

Peoria, IL

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Us Patents

Voltage Level Monitoring And Indicating Apparatus

US Patent:
4445090, Apr 24, 1984
Filed:
Aug 26, 1981
Appl. No.:
6/303254
Inventors:
Grant C. Melocik - Chardon OH
Steven E. Blight - Peoria IL
Assignee:
Towmotor Corporation - Mentor OH
International Classification:
G01N 2746
US Classification:
324433
Abstract:
A voltage level monitoring and indicating apparatus (10) including a voltage-to-frequency converter (12), an input conditioning circuit (16) that shifts voltage signals received from different voltage sources to the same input level for the converter (12) which then produces a proportional output frequency signal, a microprocessor (40) which is software programmed to produce voltage level data in response to the output frequency signal from converter (12), and a display (42) which displays a range of numbers in response to the voltage level data. Prior apparatus are not state-of-the-art microprocessor based and require different designs when coupled to different voltage sources. The present invention is microprocessor based and has the same input conditioning circuit that can be coupled to different voltage sources for use principally to indicate voltage levels of batteries on electric fork lift trucks.

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