Method and device to recover energy from driving inductive loads

Details Method and device to recover energy from driving inductive loads Method and device to recover energy from driving inductive loads

1993-09-28

1996-06-04

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

361159, 361154, 361155, 361156, 333222, H01H 3600

Patent

active

055236324

ABSTRACT:
A circuit device for recovering energy from an inductive load is connected to a protection circuit for protecting a driver circuit from a charge contained in the inductive load. The inductive load is connected between a power supply line at one end and the driver circuit and protection circuit at another end. The circuit device has a charge accumulator, preferably a capacitor, connected to the protection circuit for accumulating charge from the inductive load. A control circuit monitors the level of charge in the capacitor. A switch, connected between the capacitor and the power supply line, permits the charge accumulated in the capacitor to discharge into the power supply line. The control circuit controls the switch so as to permit the intermittent discharge of the inductive load: the switch is opened to permit charge from the inductive load to accumulate in the capacitor; and, the switch is closed to permit the capacitor to discharge the accumulated charge to the power supply line.

REFERENCES:
patent: Re30150 (1979-11-01), Puvogel
patent: 4835655 (1989-05-01), Ricci et al.
patent: 4944281 (1990-07-01), Suquet
Patent Abstracts of Japan, JP59220070; Nov. 12, 1984 Applicant: Toshiba KK; Inventor: Majima Shinichi "Switching Control Circuit".

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