Control circuit for the clamping voltage of an inductive load dr

Details Control circuit for the clamping voltage of an inductive load dr Control circuit for the clamping voltage of an inductive load dr

1989-06-12

1991-04-23

Beha, Jr., William H.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

307542, 307584, 361111, H02H 720, H03K 1760

Patent

active

050104390

ABSTRACT:
The power device has a power supply terminal, a load terminal connected to earth by means of an inductive load and a control terminal connected to a circuit with inlet for an alternating control signal. Whenever the power device is turned off, a switching element hitches the voltage of the control terminal to that of the load terminal, which is forced to fall by the inductive load. There is provided a discharge circuit of the inductive load, which includes means having a predetermined threshold which are fired when the voltage of the load terminal falls down to said predetermined threshold.

REFERENCES:
patent: 4549095 (1985-10-01), Stefani et al.
patent: 4602209 (1986-07-01), Williams et al.
patent: 4665459 (1987-05-01), Bynum et al.
patent: 4679112 (1987-07-01), Craig
patent: 4728826 (1988-03-01), Einzinger et al.

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