Overcurrent protection for push-pull circuits

Details Overcurrent protection for push-pull circuits Overcurrent protection for push-pull circuits

1982-10-12

1984-06-05

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 86, 361 93, 361 87, 363 50, 363 56, H02H 710, H02H 720

Patent

active

044531931

ABSTRACT:
Overcurrent protection is obtained in a push-pull network by circuitry repeatedly comparing signals indicative of the instantaneous current flow through the push-pull switching elements with a synchronized reference signal whose value is preferably made to decline during the ON periods of the current switches. Thus, the reference signal may initially be set relatively high to accommodate a moderately high in-rush transient and then to decline to lower levels over the remainder of the time the switching elements are on. At any time that the current signals exceed the compared to reference value, the corresponding current switch is deactivated as a protective measure.

REFERENCES:
patent: 3748537 (1973-07-01), Vigini
patent: 3896341 (1975-07-01), Kodama
patent: 4150424 (1979-04-01), Nuechterlein
patent: 4293902 (1981-10-01), White

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