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5308958 |
Circuit for controlling energizing of heating elements
A circuit for controlling the energizing of heating elements (13), including transistors (12) for controlling the energizing of the respective heating elements, energizing start time counter...
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5298795 |
Current consumption control device
A device for controlling the current consumption of a power supply which applies a voltage to a transmission control circuit for transmitting a transmission signal with respect to a transmission...
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5293755 |
Air conditioning load management control system
A load management control system is provided for an air conditioner. The system includes an outdoor temperature sensor for sensing outdoor temperature of the outside of an enclosure to be...
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5294838 |
Thermostatically controlled electrical outlet apparatus
An outlet housing includes a plurality of electrical outlets directed through a front wall thereof in electrical communication with a plug member mounted to a rear wall of the housing. A first...
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5270578 |
Method and system for controlling electric loads with high reliability
A system and method for controlling plural load with high reliability, comprising plural control devices for respectively controlling the plural electric loads, plural switches for respectively...
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5258655 |
Apparatus for electrically switching between peripheral devices
The apparatus allows the connection of two peripherals to a host device through one port and switching between them. The apparatus includes a sensor for sensing a data signal from the second...
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5256906 |
Mechanism for switching from independent to synchronous, or vice versa the operational setting of a dust collector with a receptacle for supplying another power tool with which the dust collector is to be operated synchronously
A mechanism for switching from independent to synchronous, or vice versa an operational setting of a dust collector with a receptacle for supplying another power tool with which the dust collector...
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5233227 |
Solar battery systems for vehicles
A solar battery system for a vehicle comprises a solar battery mounted on a body of the vehicle, a load connector for connecting selectively at least one of electric equipments provided in the...
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5229908 |
Multiple circuit overload protection device
A sensor connected to two different phases of an electrical wiring system provides positive protection against overloading of any single phase by preventing operation of one circuit load when there...
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5225994 |
Control and supervisory system for power distribution equipment
A novel and improved control and supervisory system for power distribution equipment including a plurality of terminal control and/or supervisory devices each capable of controlling and/or...
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5220807 |
Combined refrigerator water heater
A combined refrigerator-water heating system providing one or more insulated food storage compartments, includes an insulated water storage compartment, a refrigeration system including a...
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5218235 |
Power stealing circuit
Power stealing circuit receives data signals on its signal input terminal and diverts some power from the signal input terminal to its power output terminal to power another circuit. When the...
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5208485 |
Apparatus for controlling current through a plurality of resistive loads
Disclosed is an electrical control circuit (10) for controlling current through a plurality of resistive loads (14(1), 14(2) . . . 14(N)). The control circuit includes a plurality of current...
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5202582 |
Electronic control for a dishwasher
An appliance control circuit used in a dishwasher which includes only a single door switch which is used both for disabling/enabling the AC voltage components of the dishwasher and which also...
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5198809 |
Hard wired programmable controller especially for heating ventilating and air conditioning (HVAC systems)
Inputs are programmably interfaced and interlocked with output so that the state of the outputs and the operation of equipment connected thereto depends on the hierarchy or priority (control...
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5181180 |
Method and apparatus for monitoring and maintaining an optimum balance between the main phases of a multi-phase multiple load local electrical distribution system
An apparatus which monitors and maintains an optimum balance between the main phases of a multi-phase multiple load local electrical distribution system. A series of sensors monitor the current...
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5177340 |
Control of radiant heating system for thermoplastic composite tape
A radiant heating control system for a computerized tape laying machine is described in which the radiant heater is controlled so as to reliably heat thermoplastic composite tape to a processing...
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5123256 |
Method of compressor staging for a multi-compressor refrigeration system
A method of staging a plurality of compressors in a refrigeration system. The method comprises the steps of: accumulating a first operative condition for each compressor; accumulating a second...
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5077484 |
Light controlled extension socket
A light level controlled electrical extension socket comprising a main body on which is formed two pairs of insertion sockets for receiving an appliance's power plug, a photosensitive element...
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5043595 |
Power supply control subsystem for an image forming apparatus
A power supply control subsystem for an image forming apparatus is provided to control the operating timing of multiple DC loads according to selected image forming modes. Electric power is...
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5027002 |
Redundant power bus arrangement for electronic circuits
A redundant power bus arrangement for electronic circuits controls the application of voltage from a power source to an active circuit card and a standby circuit card. Current limited switches are...
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5015826 |
Power adjustment device for electric power systems, in particular for electric power systems with electric ovens
This power adjustment device for electric power systems, in particular for electric power systems with electric ovens, has the aim of optimizing the electric absorption of the system by...
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5012653 |
Multicompartment Temperature controlled road vehicles
A multicompartmented road vehicle, e.g., a six-lane delivery truck 16, has a separate refrigerator system for each lane, governed by a separate thermostat in each case. The corresponding condensers...
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4958055 |
Control circuit for a refrigerator combined with a microwave oven
A control circuit for a refrigerator combined with a microwave oven includes signal delay selecting and comparing circuitry start sensing circuitry timer circuitry and load driving circuitry in...
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4952817 |
Self-starting test station
A test system in a standalone chassis without a power cord. The testing subsystem (e.g. a spectrophotometer) is microprocessor-controlled, and the microprocessor is disconnected from the battery...
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4920252 |
Temperature control method for distributing power to a plurality of heating elements
A temperature control method is provided which is capable of carrying out a more efficient temperature control through an impartial starting of a plurality of temperature control objects such as...
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4915162 |
Method and apparatus for heater current control for automatic vending machine
In an automatic vending machine having a heater for boiling water, and a motor-driven compressor for refrigeration, a flow of current to the heater is stopped when the compressor is started. On the...
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4916379 |
DC-to-DC converter using relay coil
A DC-to-DC converter is disclosed that uses a relay coil as an inductor. A relay has a coil and an associated relay contact. When the coil is energized, the contact closes and connects a first DC...
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4916328 |
Add/shed load control using anticipatory processes
There is disclosed an add/shed system and method for adding and shedding loads to maintain the power consumption of a building below the predetermined level. The system includes a plurality of...
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4912338 |
Safety system for a gas operated appliance in a vehicle
The present invention is a safety system for a gas operated appliance in a vehicle. The system includes means for generating an electrical signal, such as a pre-determined voltage. The system also...
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4908498 |
Control for delivery of power to heating elements
The invention relates to a control and switching apparatus for electric heating, comprising a micro-processor-based operation control unit (2) provided with control switches, and a regulating...
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4896254 |
Protective power controller
A power controller system for providing electrical power to a multiplicity of loads at outputs thereof under direction of a plurality of input controllers operating a corresponding plurality of...
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4888495 |
Power adapter for electrical installations and especially domestic installations with so-called carrier current control
The power adapter (114) has a power input (17, 18) and a power output (117) connected to a plurality of power consumption points (3, 4, 6, 7, 8, 9, 11) and a load-shedding device so designed that,...
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4885799 |
Load pull isolation switch for a fast locking synthesizer
A load pull isolation switch for a signal source is discolsed which substantially eliminates the effects of load pull caused by a variable impedance load when selectively coupled and decoupled to a...
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4882501 |
Power supply arrangement for electro-hydraulic control systems in mining and civil engineering
A power supply arrangement which is intended, in particular, for intrinsically safe electro-hydraulic control systems for mining and comparable applications, in which several control units and...
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4864154 |
System for automatically shutting down auxiliary power devices in a vehicle
A solid state digital and analog circuit which is connected between a two-way radio, public address system etc. and the battery in a police car, emergency vehicle, tow truck or fire truck to...
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4847722 |
Refrigerator and microwave oven and overdemand interrupt circuit
A microwave oven and a refrigerator are combined into a single cabinet housing a shared power supply with an electrical supply disconnect for the magnetron of the oven during a start-up power...
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4819180 |
Variable-limit demand controller for metering electrical energy
A method and system for regulating power delivered to different commercial or residential users in which each user has variable demands for power consumption, there being a power source from which...
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4814929 |
Breaker box interface device
A device (10) for interfacing a line voltage breaker box (14) with a low voltage controller (30). The device (10) includes a housing (12) which shields the electrical component contained therein. A...
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4785229 |
Threshold detecting battery protection circuitry
A power shutdown circuit includes an electronic latch circuit connected in series with a monitored power supply and comparator input and power terminals. The output terminal of the comparator is...
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4771184 |
Electronic switch apparatus
An electronic switch apparatus with a capacitor power supply portion which superimposes a current on a consumer circuit encompassing a plurality of power or current consumers which are individually...
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4761705 |
Fault tolerant/failsafe current unit
A fault tolerant/failsafe current limit system for shutting down a power supply if an overcurrent condition exists at one or more selected load circuits in a set of load circuits. A current limit...
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4761592 |
Electric motor with overload protection circuit
An electric motor comprising a motor overload protection such as a thermal switch and a main relay for controlling a multipolar switch in the voltage supply conductors of the motor. The thermal...
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4749881 |
Method and apparatus for randomly delaying a restart of electrical equipment
A method for randomly delaying a restart of electrical equipment following an availability of power for energizing the equipment includes the steps of measuring an environmental temperature, e.g.,...
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4747041 |
Automatic power control system which automatically activates and deactivates power to selected peripheral devices based upon system requirement
A selective, non-manual power controller provides the selective, non-manual power control of various components of a data processing equipment from and reports the power status of such components...
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4737617 |
Power control for cooking appliance with transient operating modes
A power control system for operating a heating element in a cooking appliance in response to the selection of one of a plurality of user selectable power settings. Approximate heating element...
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4733323 |
Photothermic and time switch devices for outdoor low tension power supply system
A light responsive control and overload protection circuit for low voltage illumination systems includes means responsive to ambient light for providing an enabling output. Control means respond to...
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4725916 |
Short-circuit protective circuit for uninterruptible power supply equipment
A short-circuit protective circuit for uninterruptible power supply equipment of the type in which in a short-circuit at a branch feeder in a load part, a bypass thyristor switch is operated to...
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4707679 |
Magnetic tamper detector
An electric meter is provided with a magnetically sensitive switch and a means for detecting the activation of the switch. A program is provided for sensing, recording and transmitting the status...
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4695738 |
Energy management system
An energy management system for controlling a plurality of electrical loads having assigned priorities of use employs electronic relays to sense the flow of current in the loads. Signals from the...
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