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Patent No. 5823386

Reward Candy Dispenser for Personal Computers

A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.

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Class 307/117 - Light, heat, vibratory or radiant energy


Subclass of Class 307 - Electrical transmission or interconnection systems
Definition: Subject matter in which the system is responsive to light,
No. of patents: 572
Last issue date: 01/03/2012


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NumberTitleIssue Date
8089180Integrated circuit device, method of controlling operation of integrated circuit device, and method of fabricating integrated circuit device
Disclosed is an integrated circuit device comprising a startup operation circuit (101) for carrying out processing necessary for startup and a post-startup operation circuit (102) for carrying out a main operation after completion of the processing nec...
01/03/2012
8084890Apparatus and method for fire protection of electrical installations
A system for detecting and preventing electrical fire includes an intake fuse box, a main distribution panel/housing, a subdistribution panel/housing, a main power circuit (MPC) connecting the intake fuse box (IFB) to the main distribution panel (MDP), and a sub pow...
12/27/2011
8022578Electric power supply cut-off circuit and liquid droplet discharge apparatus
An electric power supply cut-off circuit comprises an IC which outputs a normal operation signal when the IC is operated normally, a switch which makes connection or disconnection between the IC and a power source, and a switching control circuit which continuously ...
09/20/2011
7952236Control apparatus for load device, and vehicle
A control apparatus for a load device mounted on a vehicle is provided with: a temperature sensor detecting a temperature of an inverter; a voltage sensor detecting an applied voltage of the inverter; and a control unit operating the inverter in a case where the app...
05/31/2011
7932643Lighting control system
A lighting control system comprises a plurality of toggle switches, a plurality of pushbuttons, a plurality of timer circuits, a plurality of relays, and a plurality of photocells to control a first plurality of lights, a second plurality of lights, a third pluralit...
04/26/2011
7911087Switching system
The switching system for reducing standby power consumed by an electrical device includes a remote control device configured to selectively emit a radio frequency signal and a switching apparatus in electrical communication with a power supply and the electrical dev...
03/22/2011
7893565Power saving hand-held electronic device
A power-saving hand-held electronic device has a front side and a back side wherein each of the front side and the back side is provided with one light sensor, respectively, for controllably switching the hand-held electronic device between an operating mode and a p...
02/22/2011
7875997Circuit interruption device
A circuit interruption device (110) is provided in which an interruption element (112) and a fuse element (114) are configured electrically in parallel. The interruption element includes an electrical conductor and a current interrupter capable ...
01/25/2011
7834485Controlling apparatus of a power converter of single-phase current for photovoltaic generation system
A control apparatus of a single-phase power converter for a photovoltaic power generation system is disclosed, including a POS MPPT controller for calculating a rating current by applying a POS MPPT control method to an output current detected through a current tran...
11/16/2010
7804200Photosensor circuits including a switch mode power converter
Photosensor circuits include a relay coil configured to control application of an alternating current (AC) power source to a load. A pulse width modulator circuit is configured to generate a pulse width modulated signal having a pulse width that varies responsive to...
09/28/2010
7786623Power management for electronic devices
A cordless electronic device with power management system and method is provided that includes an outer surface, a power consumption circuit operable to consume power and for use in a cordless electronic device, a power supply circuit operable to regulate the power ...
08/31/2010
7679223Optically triggered wide bandgap bipolar power switching devices and circuits
An electronic circuit includes a primary wide bandgap bipolar power switching device configured to supply a load current in response to a control signal applied to a control terminal thereof, and a driver device configured to generate the control signal. At least on...
03/16/2010
7573158Portable electrical appliance with object sensing assembly
A portable electric appliance includes a housing, an electrically operable element positioned within the housing, a transmitter adapted to transmit a beam of radiation, and a receiver responsive to the beam of radiation. The transmitter is positioned external to the...
08/11/2009
7569950Enhanced structure of plug switches
The invention discloses an enhanced structure of plug switches, comprising a housing; a plurality of emitting units disposed on the housing; a plug switch unit disposed on the housing and at least includes a frame, a socket set, and a switch set; a control unit disp...
08/04/2009
7541697Systems and methods for lighting control in flight deck devices
Systems and methods for illuminating flight deck devices are disclosed. In one embodiment, a flight deck panel illumination system includes at least one illuminated panel having at least one illumination source, and a power supply coupled to the at least one illumin...
06/02/2009
7504747Safety switch for reliably switching off a dangerous device
A safety switch for reliably switching off a dangerous device has an actuator which can be moved between a first position and at least one second position. It also has a detector for detecting the actuator in at least one of the said positions. The detector comprise...
03/17/2009
7439636Driver system for MOSFET based, high voltage electronic relays for AC power switching and inductive loads
A method and apparatus provides for high-speed switching of high-voltage and high power MOSFET-based solid state relays. A driver for a MOSFET based, high voltage, high current electronic relay includes a current supply for actuating the switching circuit and a tran...
10/21/2008
7408134Programmable switch
A sensor circuit provides a signal to a microcontroller to indicate parameters of an environmental condition to which the sensor circuit is exposed, such as temperature. The sensor circuit and microcontroller are mounted in a common housing, with an output lead indi...
08/05/2008
7382272System, a tool and method for communicating with a faulted circuit indicator using a remote display
Provided is a system, a tool and a method for communicating with a faulted circuit indicator (FCI), the faulted circuit indicator including a detection circuit for monitoring an electrical conductor of a power system. The system includes a remote display mounted in ...
06/03/2008
7369385Overload limiting circuit
An overload current limiting circuit includes an output control circuit responsive to a logic input signal for generating a control signal for driving an output device to produce at an output terminal a signal representative of the logic input signal; and a sense ci...
05/06/2008
7352147Power supply to provide operation power for cooling fans
A power supply to provide operation power for cooling fans includes a non-stop power system to provide DC power in normal conditions to a remote switch control circuit to set a computer in an ON or OFF condition. The non-stop power system also outputs the DC power t...
04/01/2008
7342448Power output stage
A class D power output stage for switching a supply voltage comprises a limiting transistor with a controllable path and a control terminal, a complementary limiting transistor with a controllable path and a control terminal, a switching transistor with a controllab...
03/11/2008
7339424Apparatus and method for controlling temperature of electronic apparatus
In an embodiment of this invention, if a state, in which duty ratio of a PWM signal is kept equal to or greater than a predetermined value, has been maintained for a first time period, the duty ratio of the PWM signal of a digital power amplifier is adjusted downwar...
03/04/2008
7332692Redundant control circuit for hot melt adhesive assembly heater circuits and temperature sensors
A redundant control circuit comprises a pair of heater circuits for heating a hot melt adhesive hose assembly to a predetermined temperature level, and a pair of temperature sensors which are used to sense the temperature of the hot melt adhesive hose assembly and t...
02/19/2008
7332834Power outlet device for charger and method of transmitting power thereof
A power outlet device for a charger comprises an input port, a DC power supply unit, a control unit, a current sensor, a switch, and an output port. The input port of the power outlet device for a charger is used to receive an AC power, and the current sensor and th...
02/19/2008
7330000Discharge lighting bulbs control system
A device comprising energy saving circuitry incorporated within lighting systems of the type utilizing discharge lamps, wherein the circuitry includes at least one transformer having a primary and secondary windings oppositely wound to establish different fields of ...
02/12/2008
7326887Modified reset motor protector
A self-hold motor protector (10) has an open metallic housing (12) in which a thermostatic disc (14) carrying a movable electrical contact (18) is cantilever mounted. A heater seat plate (20) is mounted in the housing in electrical...
02/05/2008
7327560Keyboard with integrated laptop stand
A full-size keyboard with an integrated laptop stand. In one embodiment, the laptop stand is part of a cover for a portable keyboard, with the cover unfolding and including a pop-up stand for supporting a portable computer. The stand is thus connected to the keyboar...
02/05/2008
7324876System for remotely controlling energy distribution at local sites
A power management system and associated method includes provision of local wireless energy control units at remote sites for controlling power delivery to customer loads, and a central station with a wireless transmitter for broadcasting commands to the wireless en...
01/29/2008
7322015Simulating a dose rate event in a circuit design
Behaviors of a transistor during a dose rate event can be modeled using a circuit simulation software package. A subcircuit model replaces a transistor in a circuit design to be simulated. The subcircuit model can be in the form of a schematic-based representation o...
01/22/2008
7319389Self-powered long-life occupancy sensors and sensor circuits
Occupancy sensors are provided that do not require an external power source in order to operate. The sensors operate with a low voltage non-rechargeable battery and are fully functional for at least about 15-20 years. The sensors include a relay output capable of sw...
01/15/2008
7319440Organic light emitting diode light source
A novel OLED light source and method for controlling said OLED light source panel are disclosed wherein said light source is constructed such that active areas are segmented and said segments are separately addressable. In one embodiment, the segments are a series o...
01/15/2008
7317605Method and apparatus for improving performance margin in logic paths
An apparatus and method is disclosed for improving timing margins of logic paths on a semiconductor chip. Typical logic embodiments, such as CMOS (Complementary Metal Oxide Semiconductor), have path delays that become shorter as supply voltage is increased. Embodime...
01/08/2008
7304835Mainframe and power supply arrangement
A mainframe and power supply arrangement is disclosed to include a mainframe, which has a base frame holding a DC power jack and connector modules, a circuit module, which includes a sliding carrier detachably slidably inserted into the base frame and a circuit boar...
12/04/2007
7282818Power hand tool having a proximity detector
The present invention provides a power tool with a hand proximity detector to detect the hand of an operator and a trigger circuit operable with the detector to control the operation of a light in the housing or to provide a safety lockout function. One embodiment i...
10/16/2007
7276684High gain photo cell with improved pulsed light operation
A photocell system includes a current control circuit that provides an offset voltage. Each photocell in a photocell array includes an opto-electrical converter receives the offset voltage such that the opto-electrical converter establishes a DC operating point. In ...
10/02/2007
7277012Broad field motion detector
A motion sensing system device and method which utilize dispersed ultrasonic radiation is disclosed. The system preferably comprises a low profile sensor unit configured to couple to a ceiling position. The sensor unit comprises an ultrasonic transmitter and an ultr...
10/02/2007
7274117Radio wall switch
A radio wall switch that uses radio signals to control a load through a load circuit is disclosed. The radio wall switch is also configured group or bind electronic devices to operate collectively by responding to the same radio control signals. Preferably, the radi...
09/25/2007
7265652Controllable electronic switch
A controllable electronic switch for, e.g., controlling power distribution comprises a deformable member such as a bimetal arm that can be deformed to break an electrical path. The deformable member may be anchored at one end and in controllable contact with an elec...
09/04/2007
7258575Light sense controller
A light sense controller uses a light sensor to sense light variations, and then turns a socket on or off in response to the light levels for controlling household appliances coupled the socket. The light sense controller includes a plug and at least one socket. A s...
08/21/2007
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