Fluid level sensor circuitry

Details Fluid level sensor circuitry Fluid level sensor circuitry

1983-09-19

1985-10-29

Yasich, Daniel M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

73304R, 361178, G01F 2322, H01H 4732

Patent

active

045502617

ABSTRACT:
A device to control a temperature variable-resistive type oil fluid level sensor in vehicles. The device employs constant current excitation under control of a relay to maximize the sensor's response and employs a shut-off feature to protect the sensor from overheating.

REFERENCES:
patent: 3790936 (1974-02-01), Knoll
patent: 3792456 (1974-02-01), Hill
patent: 4065760 (1977-12-01), Feldon
patent: 4086538 (1978-04-01), Foreman
patent: 4326199 (1982-04-01), Tarpley et al.
patent: 4464582 (1984-08-01), Aragaki et al.
patent: 4475140 (1984-10-01), Day
patent: 4491146 (1985-01-01), Sveds
patent: 4503419 (1985-03-01), Kidd et al.
PCT No. "WO83/00785" Published Mar. 3, 1983, Applicant Motorola Inc., Inventor Barker et al., High Speed Comparator CMOS Circuit.

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