Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1978-10-02
1980-07-22
Brigance, Gerald
Communications: electrical
Condition responsive indicating system
Specific condition
340641, G08B 2100
Patent
active
042142369
ABSTRACT:
A driver circuit for an electrical load device such as an indicator lamp includes the capability to both drive the lamp and to respond to a fault condition in the lamp to disable its energization. The circuit is adapted for control by a single I/O terminal of a programmable logic device. The I/O terminal being of the type having an internal architecture that causes the terminal to be pulled up to a logic high state when unloaded, and pulled down to a logic low state by either external loading or the closure of an internal; program-controlled switch forming part of a low-impedence path to ground. A processor-implemented test routine can be used to monitor the I/O terminal voltage and close the internal switch when the driver circuit responds to a shorted condition.
REFERENCES:
patent: 2963692 (1960-12-01), Barter et al.
patent: 3604949 (1971-09-01), Conzelman
patent: 3774188 (1973-11-01), Bial et al.
patent: 3801975 (1974-04-01), Kitomo
patent: 3825914 (1974-07-01), Schacket
patent: 3883777 (1975-05-01), Morita
patent: 3903430 (1975-09-01), Arns
patent: 3944889 (1976-03-01), Conway
patent: 3947811 (1976-03-01), Hodgson
patent: 3987424 (1976-10-01), Brouwen et al.
patent: 4042908 (1977-08-01), Amano et al.
Carp Ralph W.
Groff William R.
Brigance Gerald
Haas, Jr. Gaylord P.
The Bendix Corporation
Tuttle Robert C. J.
Wells Russel C.
LandOfFree
Driver circuit for an electrical load with capability for detect does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driver circuit for an electrical load with capability for detect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driver circuit for an electrical load with capability for detect will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2180436