An insulating feedthrough for an electrostatic precipitator has a cylindrical insulator passing through a hole in the wall of the precipitator and having an annular flange which is sealingly pressed against the inner surface of that wall by a clamping arrangement including a spring. A tubular bushing extends through the insulator and has a flange bearing upon the inner end of the latter which is connected by a clamping arrangement to a flange on the support for the electrodes via another spring....

An audio amplifier in which the input section has means for modulating a radio frequency carrier so that isolation provided by radio frequency coupling allows the output section to obtain power from a power line without a power transformer.

A transistor having an emitter and base with contact surfaces lying substantially in the same plane has an increased safe operating area, that is increased wattage rating without increasing the size of the transistor, achieved by providing an isolated base contact of an enhanced conductivity immediately adjacent the emitter, thereby providing a distributed resistance between the termination of the enhanced conductivity isolated base contact and the base ohmic contact of the transistor.

A transistor having an emitter and base with contact surfaces lying substantially in the same plane has an increased safe operating area, that is increased wattage rating without increasing the size of the transistor, achieved by providing an isolated base contact of an enhanced conductivity immediately adjacent the emitter, thereby providing a distributed resistance between the termination of the enhanced conductivity isolated base contact and the base ohmic contact of the transistor.

An isolator to prevent transmitted vibrations includes a ring which fits within a shaft opening of a housing. A bearing is received within the isolator and a shaft is received within the bearing. The vibrations are decoupled from a vibration transmission path by the different material of the isolator. The isolator is preferably manufactured of a rigid laminate material dissimilar to the housing material. Another embodiment of the present invention integrates the isolator directly into the bearin...

An isolated converter with a reduced size is disclosed. A small-sized multilayer sheet transformer includes a multilayer circuit board composed of a plurality of sheet substrates, coil patterns of primary and secondary coils disposed coaxially on the sheet substrates, and a core member disposed in a coil pattern unit formed of the coil patterns. In this multilayer sheet transformer, a coil pattern formed on the outer surface of the top layer and a coil pattern formed on the outer surface of the ...

A method for isolating viable, biologically substantially pure exfoliated fecal colonocytes at normal ambient temperature is described. Immunocoprocytes and inflammatory cells indicative of certain gastrointestinal conditions and a noninvasive method for detecting colorectal cancer are set forth. Composition of transport and suspension media for isolation of colonocytes are detailed.

A sensor formed in a substrate of a first conductivity type in a first concentration to express a first intrinsic potential includes CMOS circuitry to control the sensor, a first well of the first conductivity type in a second concentration (greater than the first concentration) formed in the substrate to express a second intrinsic potential, and a photodiode region of a second conductivity type formed in the first well. The first and second intrinsic potentials induce a field between the substr...

An animal feeder maintains animal feed in a protected condition until the feed is desired by an animal. As configured for usage, the feeder includes a feed container of dish character and a support structure supporting the container in a position to be approached by an animal. A cover is carried in hinging relationship for movement between positions covering and uncovering the container. When uncovered, the container is protected from the elements, but when uncovered permits the animal to feed f...

A corrugated panel adapted to be nailed to a roof between the base roof structure and the roof covering material so as to provide a multitude of ventilating air passages under the roof covering and thermally isolate the roof covering from the building.