Power circuit and trigger device comprising same

Details Power circuit and trigger device comprising same Power circuit and trigger device comprising same

1985-09-03

1987-12-08

Leung, Philip H.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 56, 330207P, H02H 320

Patent

active

047121530

ABSTRACT:
A power circuit comprises a current amplifier circuit connected between a minimum potential line and a maximum potential line. It further comprises, connected between these lines together with the aforementioned main circuit, a protection circuit which has a control input. A trigger and distributor circuit is connected in parallel with these circuits and is adapted to neutralize the protection circuit, via its control input, when the voltage across the main circuit is below a threshold value. Is it also adapted to activate the protection circuit when the voltage across the main circuit reaches this threshold value, while maintaining the voltage across the main circuit at an approximately constant ratio to the voltage between the two potential lines. The circuit is applicable in particular to controling failsafe alarm circuits, by means of logic signals, for example.

REFERENCES:
patent: 4217618 (1980-08-01), Kellenbenz et al.
patent: 4424544 (1984-01-01), Chang et al.
patent: 4455585 (1984-06-01), Murari et al.
patent: 4543539 (1985-09-01), Seki et al.

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