Transient reduction circuit

Details Transient reduction circuit Transient reduction circuit

1992-06-17

1994-07-26

Hoff, Marc S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 58, 361111, H02H 720

Patent

active

053330943

ABSTRACT:
A transient reduction circuit is provided for use in an arrangement including a backplane having at least two conductors, a power supply connected to the conductors, and a plurality of circuit cards attached to the backplane and connected to the conductors. Each of the plurality of circuit cards includes a transient reduction circuit having inputs for connection to the power supply output and a reference potential, a transistor having an emitter connected to the power input, a collector connected to the load and a base, a resistor connected between the base and the reference potential input, and a decoupling capacitor connected between the collector and the reference potential input. When the cards are powered the transistor is turned on and saturates, thus introducing only a 0.1 V drop in the power supply line. A sudden decrease in power supply voltage output is prevented from discharging the decoupling capacitor by a reverse biased base-collector junction in the transistor.

REFERENCES:
patent: 4245270 (1981-01-01), Busby

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