7 results about "Varistor" patented technology

An exemplary varistor is disclosed which includes at least two poles; a non-linear block; a conductive plate arranged on a main face of the block and having a protruding portion forming one of the poles; and an electrically insulating coating applied to the main face of the block. The part forming the connection pole emerges from the electrically insulating coating and has a braze surface extending above the electrically insulating coating; and the protruding part forming the connection pole is connected to the rest of the plate over at least half of the perimeter thereof.

A circuit for attenuating a surge is disclosed that might include a conductor for receiving the surge, a capacitor, positioned along the conductor, for blocking the surge, and a gas tube having a first end coupled to the conductor and a second end coupled to a ground. The circuit might also include a transformer having a first wire and a second wire, the transformer being coupled to the conductor, a resistor coupled to the first and second wires of the transformer, a varistor coupled to the first wire of the transformer, and a diode coupled to the second wire of the transformer.

The invention relates to an insulating blocking head with a sensing function. The insulating blocking head comprises a metal shielding hood shell, a high voltage terminal, a high voltage resistor, a low voltage resistor, a varistor and a waterproof connector, the high voltage terminal, the high voltage resistor, the low voltage resistor and the varistor are integrally pour-molded by an epoxy resinpouring body, the high voltage terminal is arranged on the conical inserting end of the upper portion of the epoxy resin pouring body, the high voltage terminal passes through the high voltage resistor and the low voltage resistor in sequence to be connected with the waterproof connector on the lower end face of the epoxy resin pouring body, the low voltage resistor is in parallel connection withthe varistor, the lower portion of the epoxy resin pouring body is encapsulated in the metal shielding hood shell, and an outer hexagonal boss is arranged in the center of the lower end face of the metal shielding hood shell.

The invention discloses a tripping type lightning protection piezoresistor, and belongs to the technical field of piezoresistors. The tripping type lightning protection piezoresistor comprises a mounting shell, a cutting mechanism is arranged on a circular ring, and a first cooling mechanism is arranged on the cutting mechanism; an unlocking mechanism is arranged on the first cooling mechanism, and a second cooling mechanism is arranged on the unlocking mechanism. According to the present invention, a circuit can be timely cut off after being struck by lightning by arranging a cut-off mechanism, the explosion of the piezoresistor caused by excessive heating is avoided, the piezoresistor can be timely cooled after the circuit is cut off by arranging the first cooling mechanism, and the piezoresistor is prevented from being damaged by long-time high temperature; by arranging the unlocking mechanism, the piezoresistor is fixedly contacted after the circuit is cut off, so that the maintenance and replacement are facilitated; by arranging the second cooling mechanism, after the piezoresistor is fixedly contacted, a fluorinated liquid is sprayed to cool the whole interior of the mounting shell, and combustion caused by overheating in the mounting shell is prevented.