Non-linear snubber circuit

Details Non-linear snubber circuit Non-linear snubber circuit

2005-04-26

2005-04-26

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

C361S023000, C361S024000, C361S056000, C361S111000

Reexamination Certificate

active

06885535

ABSTRACT:
A control circuit for a motor including a contactor circuit having a contactor, a first end and a second end, and a snubber circuit connected across the contactor circuit. The snubber circuit includes a first port electrically connected to the first end of the contactor circuit, a second port electrically connected to the second end of the contactor circuit, a first sub-circuit electrically connected to one of the first and second ports, and a second a second sub-circuit electrically connected in series with the first sub-circuit and to the other of the first and second ports. The first sub-circuit includes a resistor and a first non-linear device electrically connected in parallel branches, and the second sub circuit includes an energy storage device and a second non-linear device electrically connected in parallel branches.

REFERENCES:
patent: 4275430 (1981-06-01), Seki et al.
patent: 4678932 (1987-07-01), Tanaka et al.
patent: 4697219 (1987-09-01), Mitsuoka
patent: 4745513 (1988-05-01), McMurray
patent: 5339210 (1994-08-01), Howell
patent: 5615094 (1997-03-01), Cosentino et al.
patent: 5986904 (1999-11-01), Jacobs et al.
V. Lakshminarayanan, Centre for Development of Telematics, “Techniques Minimize Switching-Device Failures In Inductive Circuits”, EDN, Jan. 20, 2000, pp. 59-65.

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