1
Kendall Don Leslie: Method of making a solid state inductor. Texas Instruments Incorporated, Levine Harold, Comfort James T, May 6, 1975: US3881244 (94 worldwide citation)

Disclosed is a solid state inductor which is formed in a monocrystalline semiconductor body. An electrically isolated helix comprised of conductive studs selectively interconnected by electrical contacts circumscribes an electrically isolated core material. Typically the studs are comprised of the s ...


2
Tetsuo Takahashi, Minoru Takaya: Laminated electronic parts and process for making the same. Neuman Williams Anderson & Olson, March 30, 1982: US04322698 (69 worldwide citation)

A chip-shaped laminated electronic part including at least one inductor, which comprises a plurality of sheets of an insulating material, and electrically conductive patterns each formed on the surface of each said sheets, said patterns being so connected to form one or more coils to provide at leas ...


3
Freeze John A, Price Jr Elmo D, Wilburn Garlington C: Apparatus for indicating when current exceeds a predetermined level and when said level is exceeded for a predetermined period of time. Westinghouse Electric Corporation, November 27, 1973: US3775675 (60 worldwide citation)

Transformer fault current monitor which provides recorded indications of the number of times any fault currents have occurred and also of the number of times fault currents which have a duration of more than a predetermined length of time have occurred. Current transformers coupled to the monitored ...


4
Schreiner Louis W: Flyback transformer. Warwick Electronics, Hofgren Wegner Allen Stellman & McCord, May 27, 1975: US3886434 (43 worldwide citation)

A high voltage horizontal flyback transformer assembly includes a generally rectangular ferromagnetic core with a pair of opposing core legs. A primary or low voltage winding is split into two portions each mounted on a different core leg with the winding distributed so as to cover as much of the co ...


5
Gnaedinger Donald J, Staley Gerald E: Electrical power center for recreational vehicles. Basler Electric Company, February 20, 1973: US3717805 (42 worldwide citation)

An electrical power center for recreational vehicles comprising a cabinet which is adapted to be framed in the interior structure of a recreational vehicle and which has a circuit breaker box and a power converter unit mounted therewithin. The power converter unit may be conveniently removed from th ...


6
Arthur P Kuss, William J Book, Daniel H Hickman: Combination of a gas-filled interrupter and oil-filled transformer. ABB Power T&D Company, Woodcock Washburn Kurtz Mackiewicz & Norris, August 26, 1997: US05661280 (29 worldwide citation)

A gas-insulated switch for a distribution transformer and its associated electrical connections are located within a tank containing insulating and cooling oil for the transformer.


7
Topper Thomas B, Throop Gilbert D: Load tap changer system including protective apparatus for monitoring the operation thereof. Westinghouse Electric Corporation, November 23, 1971: US3622867 (28 worldwide citation)

A load tap changer system for electrical transformers, including a tap selector switch, a bypass switch, a vacuum switch, and a divider reactor, interconnected to interrupt load current in the vacuum switch during a top change cycle. Protective apparatus, including a current transformer, and a short ...


8
Volponi Silvia, Stangherlin Silvio, Paleari Dino: Power and/or distribution transformer equipped with on-load tap-changer. Abb Trasformatori S P A, November 17, 1999: EP0957496-A2 (27 worldwide citation)

A power and/or distribution transformer comprising: a tank provided with a magnetic core, high- and low-voltage windings, adjustment windings. insulating partitions made of solid material which are interposed between the high- and low-voltage windings and a dielectric and cooling fluid; an on-load t ...


9
Weiner Norbert: Transformer assembly. December 25, 1973: US3781741 (23 worldwide citation)

A transformer assembly having a plurality of annular shaped coil chambers and adapted to receive ferromagnetic laminations and coils has a pair of insulating caps each of which includes a plurality of integrally-formed annular ribs. The annular ribs are disposed concentrically on and perpendicular t ...


10
Golden John P: Portable X-ray device. Young Thomas N, April 15, 1975: US3878394 (22 worldwide citation)

A portable X-ray source device for producing a selected number of uniform X-ray output pulses. The device comprises a spiral capacitor voltage generator, a transformer assembly and a cold-cathode emitter X-ray tube. The capacitor and transformer are coaxially disposed in mating sections of a cylindr ...