Overcurrent protecting apparatus

Details Overcurrent protecting apparatus Overcurrent protecting apparatus

1979-04-23

1981-06-09

Wise, Edward J.

Boots, shoes, and leggings

361 79, 363 50, 363 74, G06F 1520

Patent

active

042728169

ABSTRACT:
In an overcurrent protecting apparatus for interrupting overcurrent in accordance with a coordination tripping curve characteristic, there are provided a microcomputer, a current/voltage converter for converting an overcurrent into a first voltage, D/A converting means for converting each output successively delivered from the microcomputer into a second voltage, and comparator means for comparing the first voltage with the second voltage. The delivering of the outputs from the microcomputer to the D/A converting means continues until an output is delivered from the comparator means to a first input of the microcomputer. Another comparator is also provided for delivering its output to a second input of the microcomputer when the first voltage is extremely high.

REFERENCES:
patent: 3317794 (1967-05-01), Kotheimer
patent: 3317795 (1967-05-01), Steen
patent: 4009420 (1977-02-01), Martinex-dePison
patent: 4092708 (1978-05-01), Gerding et al.
patent: 4160282 (1979-07-01), Dolinar et al.
Analog Output Chips Shrink A-D Conversion Software, A. Mrozowski, Electronics, Jun. 23, 1977, pp. 130-133.
Single Chip Microprocessor Rules The Roast, B. Bell and D. Ogden, Electronics, Dec. 9, 1976, pp. 105-110.

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