Leviton Manufacturing Company, Inc.

Eugene Shafir

David Y Chan

Roger M Bradley

John Libretto

Mario Angelides

John LiBretto

A ground fault circuit interrupter device having a feedthrough capacitor for substantially reducing interference from radio frequency signals such as those emitted from cell phones and 2-way radios. The ground fault circuit interrupter device includes a printed circuit board having a system ground terminal and a detection terminal for receiving a fault detection signal. A chip is provided having a ground pin connected to the system ground terminal and an input pin for receiving the fault detection signal. The feedthrough capacitor has a through conductor connected between the input pin and the detection terminal and a capacitor coupled between the through conductor and the system ground terminal.

Ground fault circuit interrupter with enhanced radio frequency interference suppression

A circuit interrupting device such as a GFCI having a network of feed-through capacitors and other passive elements for providing enhanced Radio Frequency Interference (RFI) suppression where the feed-through capacitors and the other passive elements are integrated into a multilayer capacitor chip, also referred to as a Network Capacitor which is located between a differential transformer and at least one input terminal of an operational amplifier on an integrated circuit chip of the GFCI circuit.

Circuit interrupting device having integrated enhanced RFI suppression

A suppression and protection circuit is used in conjunction with a circuit interrupter. In one configuration, a voltage clamping device such as a metal oxide varistor is utilized in a ground fault circuit interrupter product for handling transient surges and overvoltage conditions and is placed in series with a solenoid coil. The suppression and protection circuit includes a crowbar device across the line such as a header spark gap to prevent overvoltages, and a low pass filter such as an LC filter for suppressing transient surges.

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Jamaica Estates, NY, United States of America

Eugene Shafir