Discharge device for inductive devices

Details Discharge device for inductive devices Discharge device for inductive devices

2007-07-17

2007-07-17

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

C361S159000

Reexamination Certificate

active

10696104

ABSTRACT:
A method and apparatus for protecting an energized inductive device such as an electromagnet from an open circuit, i.e., the loss of the power source for the inductive device. A diode is connected across terminals of the inductive device such that when the inductive device is normally energized, the diode is reversed-biased. A spark gap enclosed in a housing is connected in series with the diode. An inert gas fills the housing. A resistance in the form of one or more resistors is in series with both the diode and the spark gap. Upon the sudden loss of supply to the energized device, the diode, the resistance and the spark gap form a path for the discharge of energy from the inductive device.

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