Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Patent
1992-06-25
1994-10-18
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
361 88, H02H 324
Patent
active
053573951
ABSTRACT:
An undervoltage protection circuit, system and method is prodded for sending a reset signal to an electronic device during undervoltage time periods in which the device power supply voltage is less than a desired amount. The protection circuit includes a sensing circuit and a latching network adapted to quickly discharge a storage capacitor when the sensing circuit senses the undervoltages. A buffer network is included to send a reset signal to the electronic device whenever the storage capacitor discharges to a low latched level. The reset signal exists substantially throughout the undervoltage time period and also for a set delay period after the undervoltage time period ceases. During receipt of the reset signal, the electronic device will be inhibited from incurring damage or loss of data.
REFERENCES:
patent: 3937937 (1976-02-01), McVey
patent: 4096560 (1978-06-01), Footh
patent: 4143283 (1979-03-01), Graf et al.
patent: 4404473 (1983-09-01), Fox
patent: 4412267 (1983-10-01), Hansen
patent: 4486802 (1984-12-01), Claussen
patent: 4509102 (1985-04-01), Ayer
patent: 4720758 (1988-01-01), Winslow
patent: 4771357 (1988-09-01), Lorincz et al.
patent: 4827149 (1989-05-01), Yabe
Bonicatto, Damian G., "Design Ideas," EDN, Oct. 16, 1986, p. 236.
Motorola, Inc. "Programmable Unijunction Transistor," Motorola Thyristor Device Data, 1988, pp. 3-79 to 3-82.
Motorola, Inc. "Micropower Undervoltage Sensing Circuits," Motorola Semiconductor Technical Data, 1990, pp. 1-7.
Motorola, Inc. "Darlington Transistors," Motorola Small-Signal Transistors, FETs and Diodes, 1989, pp. 2-62 to 2-65.
Bissell Steven A.
Hyde Robert B.
Rasmussen Marvin W.
Daffer Kevin L.
Jackson S.
Pellinen A. D.
Schlumberger Technology Corporation
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