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7543632 |
Compact circuit board for an automotive HVAC system
An automotive heat, ventilation and air conditioning (HVAC) system including an electrical control module for controlling the motor of the system. The module includes a connector base supporting a...
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7535335 |
Anti-condensate resistance with PTC thermistor and process for assembling such resistance
An anti-condensate resistance ( 1 ) with PTC thermistor 5 is disclosed, comprising a central heat sink element ( 3 ), such central heat sink element ( 3 ) being composed of two dissipating plates...
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7427911 |
Electrical device having a heat generating resistive element
The invention provides an electrical device having improved insulation and reduced partial discharge. The electrical device comprises an electrically conductive resistive element provided on a heat...
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7310036 |
Heat sink for integrated circuit devices
A resistor with heat sink is provided. The heat sink includes a conductive path having metal or other thermal conductor having a high thermal conductivity. To avoid shorting the electrical resistor...
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7102484 |
High power resistor having an improved operating temperature range
A high power resistor includes a resistance element with first and second leads extending out from the opposite ends thereof. A heat sink of dielectric material is in heat conducting relation to...
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7042328 |
High power resistor having an improved operating temperature range
A high power resistor includes a resistance element with first and second leads extending out from the opposite ends thereof. A heat sink of dielectric material is in heat conducting relation to...
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6882266 |
Ball grid array resistor network having a ground plane
A ball grid array resistor network that has a ground plane to reduce noise and improve signal integrity. The ball grid array resistor network includes a substrate having a first and a second...
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6747543 |
Resistor for driving motor for air conditioner blower
A resistor for driving a motor for an air conditioner blower is provided, in which internal resistance bodies are stacked over one after another between insulation plates in the resistor, to...
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6528860 |
Resistor with resistance alloy plate having roughened interface surface
A high-accuracy current detecting resistor is provided whose resistance does not change greatly according to temperature change and which has an excellent dielectric strength. In a resistor in...
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5945905 |
High power resistor
A high power resistor includes a substrate of an insulating material having opposed first and second surfaces, and a strip of a resistance material on the first surface of the substrate. The...
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5841340 |
Solderless RF power film resistors and terminations
Solderless RF power film resistor and termination assemblies which include a flat film resistor or termination pressed by a nonmetallic clamping plate into thermal contact with a base plate...
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5786745 |
Electronic package and method
A package (10) has outermost surfaces (12, 13, 14, 16) that form a polygon shape. The body (11) of the package (10) has axial symmetry about an axis (21). A lead (22) exits the package along the...
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5739743 |
Asymmetric resistor terminal
A chip resistor includes a substantially rectangular substrate of an insulating material having opposed substantially flat top and bottom surfaces and edges extending between the top and bottom...
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5665261 |
Motor vehicle electric heating device having angled off metal heating plates arranged to mutually abut one another at opposite ends
An electric heating device includes a plurality of heating elements which are assembled to form a block. Such a heating element is formed from two metal plates, with the interposition of PTC...
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5621378 |
Heatsink-mountable power resistor having improved heat-transfer interface with the heatsink
A power resistor having much improved heat dissipation ability to an underlying heatsink because a step or protuberance is provided that cooperates with the mounting bolt or screw to largely...
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5581227 |
Hybrid circuit having ceramic strip to increase loading capacity
A hybrid circuit unit having a film resistor on a circuit carrier and a ceramic stripe having an area of at least approximately the same size as the film resistor is secured in a highly thermally...
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5563570 |
Resistor device for controlling a rotational speed of a motor
The present invention relates to a resistor device for controlling a rotational speed of a motor which has no directional property and provides a convenient setting. A resistance unit is positioned...
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5481241 |
Film-type heat sink-mounted power resistor combination having only a thin encapsulant, and having an enlarged internal heat sink
A low-cost heat sink-mounted power film resistor having a high power rating for its footprint size, and not incorporating any housing. The resistor is bolted or otherwise secured tightly to an...
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5436609 |
Electrical device
An electrical device in which a conductive terminal is physically and electrically attached directly or indirectly to a face of a laminar PTC resistive element. The terminal comprises a laminar...
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5355281 |
Electrical device having a bonded ceramic-copper heat transfer medium
The present invention relates to an electrical device such as a resistor or silicon controlled rectifier that is provided with an improved heat transfer medium for transferring heat from the device...
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5321382 |
Thermal type flow rate sensor
A thermal type flow rate sensor comprising a sensor chip having a rectangular shape. The sensor chip is supported between supporting pins through ribbon-like leads connected to opposite ends of the...
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5304977 |
Film-type power resistor combination with anchored exposed substrate/heatsink
The film-type electrical power resistor includes a flat ceramic chip on the upper surface of which is screen-printed a resistive film. Terminals (leads) are mechanically and electrically connected...
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5291174 |
Ceramic substrate blower motor resistor array
An improved blower motor speed control resistor array in which the resistor elements are defined by multiple optimally sized patches of resistive ink deposited onto opposite sides of a thin flat...
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5268665 |
Resistor device for blower motor
A resistor device for blower motor comprising one plate of PTC element having two side surfaces and a plurality of electrodes disposed on at least one of the two side surfaces. A plurality of...
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5254968 |
Electrically conductive plastic speed control resistor for an automotive blower motor
A blower motor speed control resistor array in which the resistor elements contain an electrically conductive plastic material which melts to limit the blower motor current in the event of an...
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5243683 |
Laminar streamflow-guided hair dryer with finned PTC heating means
A hair dryer includes a plurality of elongated positive-temperature-coefficient (PTC) semiconductor heating units disposed in transverse side-by-side spaced relation in a linear array in a central...
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5229741 |
Automotive resistor unit having mounting clip
The resistor unit comprises resistors connected to electrical terminals secured to an insulating plate to which first and second legs of a spring sheet metal mounting clip are secured for insertion...
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5228460 |
Low mass radial array heater for electrical smoking article
A heating element to provide heat to a tobacco flavor medium, for use in an electrical smoking article, by converting electrical energy to heat through the use of a material with electrically...
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5185568 |
RF test load and method for internal use thereof
The invention describes an internal test load and method for forming an internal test load which is adapted to absorb energy from a power source such as an RF transmitter, transceiver, or...
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5179366 |
End terminated high power chip resistor assembly
An end terminated high power chip resistor-printed circuit board assembly (9) suitable for use in applications requiring miniature surface mount resistors capable of high power dissipation. An end...
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5159310 |
Resistor grid heat dissipating assembly
A heat dissipating resistor grid has a rectangular or annular frame including side members carrying blocks or panels of insulating material having cavities in their inner surfaces. The resistor...
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5119063 |
Variable power resistor
A variable power resistor includes a heat sink having a front face and a back face with an electrically insulating, thermally conductive ceramic coating bonded directly onto the front face such...
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4935717 |
Resistor device for controlling a blower
A blower control resistor device includes a plurality of resistors leading to resistor terminals, and a plurality of connecting terminals joined with the resistor terminals by thermal fuses. The...
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4931626 |
PIC thermistor device having heat radiation fins with adjustable temperature regulating guide plates
A PTC thermistor device includes a heat generator containing a PTC thermistor unit, and heat radiators thermally coupled thereto. Each of heat radiators includes a plate, one main surface of which...
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4868997 |
Dryer timer
A dryer timer includes a housing and a motor and a cam assembly carried in the housing. A switch in the housing is responsive to the cam to switch the motor between a 120 VAC standard timer circuit...
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4638284 |
Tubular varistor arrangement
A tubular varistor arrangement, particularly suitable for use in electrical connectors of circular cross-section, attains an electrical breakdown voltage equalling the cumulation of the breakdown...
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4588976 |
Resistors obtained from sheet material
These resistors are obtained from conductive sheet material, for example metal sheet material (usually referred to as "grids") in which additional plates are provided in order to distribute the...
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4523079 |
Electric iron having electronic control circuit with a power resistor mounted on the soleplate
An electric steam iron includes a plastic housing shell forming a hollow handle structure and a soleplate with steam generating means and ports for distribution of steam. A pump actuated by a...
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4412126 |
Infrared source
An infrared source comprising an electrically powered, hollow cylindrical rod which operates at lower temperatures and yet has no decrease in output power is configured by increasing the outside...
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4359710 |
Annular resistor with zig-zag layer pattern for resistance elements
An improved annular resistor, suitable for use in a diesel electric locomotive dynamic braking system and similar applications comprising an assembly of similar arcuate segments. Each resistor...
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4346285 |
Heating device employing thermistor with positive coefficient characteristic
A heating device for heating fluid is disclosed. The heating device includes a tanning unit including a thermistor element having a positive temperature coefficient characteristic and adapted to...
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4335417 |
Heat sink thermal transfer system for zinc oxide varistors
A heat transfer arrangement for zinc oxide varistors comprises a metal heat sink disk held in contact with one face of the varistor by means of a circumferential elastic sleeve. The heat generated...
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4196411 |
Dual resistor element
A resistor comprises a ceramic plate on the opposite surfaces of which a thick film is arranged in a pattern forming respective electrically resistive circuits which are connected by continuing the...
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4124794 |
Electrical heater unit
An improved electrical heater using a vacuum surrounding the heating element instead of the usual gaseous or liquid medium for transfer of the heat to external means of dissipation. The heating...
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4117308 |
Explosion-proof electric air heater
An electric heater, particularly adapted for supplying heat to hazardous areas where the atmosphere in the area contains particles or fumes that are readily ignited. The heater includes one or more...
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4064477 |
Metal foil resistor
The present device is a high reliability resistor comprising a sheet of metal foil secured to the flat side of a substrate and with the opposite side of the substrate formed to dissipate heat into...
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4051452 |
Annular resistor
An annular resistor, suitable for use in a diesel electric locomotive dynamic braking system and the like, having a supporting frame including spaced inner and outer annular frame portions and a...
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4042901 |
Temperature sensing resistance probe and method of making a resistance element therefor
The invention is a temperature sensing wire resistance probe including a temperature responsive resistance element assembled in a novel method and having insulation adequate for direct connection...
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4020443 |
Variable temperature sensor
A variable temperature sensor for detecting and/or controlling the temperature of an object is disclosed. The variable temperature sensor comprises a thermallly conductive probe having one end...
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3955169 |
High power resistor
A thick film spiral shaped resistor deposited on an alumina substrate and bonded to a Kovar plate, an aluminum heat sink is coated on one side with a silicon grease and the Kovar plate is bolted...
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