Capacitors having integral discharging means

Details Capacitors having integral discharging means Capacitors having integral discharging means

1975-04-16

1977-01-04

Goldberg, E. A.

317 12R, H01G 440

Patent

active

040016579

ABSTRACT:
Wound capacitors have a resistive strip included as an integral part of the capacitor section or roll. End areas of the resistive strip are in physical and electrical contact with the electrode strips, respectively, the rest of the strip discharging electrical energy stored in the capacitor when it is disconnected from a source of power. The portion of the resistive strip between the end areas is electrically insulated from the electrode strips so that current flows along the strip between the end contact areas. In one embodiment, the resistive strip extends about the winding, and in a second embodiment the resistive strip extends transverse to the electrode strips and loops around the edges of the electrode strips and the separating dielectric strips at the end of the capacitor section. If the capacitors are impregnated, the impregnant improves the ability of the resistive strip to withstand the voltage that is applied to the unit and to withstand and dissipate the heat generated in the strip.

REFERENCES:
patent: 1563754 (1925-12-01), Latour
patent: 3840787 (1974-10-01), Grahame
Dummer "Fixed & Variable Capacitors" McGraw Hill N.Y. 1960 p. 89.

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