Class 315/186 - Periodic switch in the supply circuit

Subclass of Class 315 - Electric lamp and discharge devices: systems
Definition: Systems having a periodic switch connected in the current
No. of patents: 23
Last issue date: 04/22/2008

Number	Title	Issue Date
7362057	Multi-way flashing control box for lamp strings A circuit board of a multi-way flashing control box includes a control circuit to be connected electrically to a plurality of LED lamp strings and operable to activate and deactivate the LED lamp strings, and a plurality of connecting units, each of which is for con...	04/22/2008
7279809	Christmas light string with single Zener shunts A string set of series-connected incandescent bulbs in which substantially all of the bulb filaments in the set are individually provided with a shunt circuit which includes a voltage responsive switch which is inoperative during normal operation of the string set w...	10/09/2007
7262557	Apparatus for illuminating footwear An apparatus for illuminating footwear includes a circuit combining a switch having a resilient spring and a light sensitive switch. ...	08/28/2007
7231060	Systems and methods of generating control signals Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; computing a short-time similarity measure between the left channel and the right channel; classifying portions of th...	06/12/2007
7202607	Year-round decorative lights with time-multiplexed illumination of interleaved sets of color-controllable LEDS A decorative lighting apparatus provides user-selectable color schemes corresponding to several holidays and other occasions for year-round use. In one illustrative example, the decorative lighting apparatus includes control circuitry which has a plurality of color-...	04/10/2007
7120479	Switch-mode oximeter LED drive with a single inductor A light emitter drive circuit for an oximeter which utilizes a single inductor for driving multiple light emitters. The inductor is connected to a switching circuit to multiple energy storage circuits, such as capacitors. These are alternately charged up, using the ...	10/10/2006
7042165	Driver circuit for LED vehicle lamp A first vehicle lamp driver circuit for a light emitting diode (LED) array, the LED array having a first string of four LEDs in series and a second string of four LEDs in series. A first LED driver drives the first LED string and a second LED driver drives the secon...	05/09/2006
7038398	Kinetic illumination system and methods The present invention relates to methods of creating eye-catching displays by taking advantage of color-changing illumination provided by LED systems disclosed herein. Displays can be made to appear to change color or to move simply by changing the color of the ligh...	05/02/2006
7038399	Methods and apparatus for providing power to lighting devices Methods and apparatus for providing power to devices via an A.C. power source, and for facilitating the use of LED-based light sources on A.C. power circuits that provide signals other than standard line voltages. In one example, LED-based light sources may be coupl...	05/02/2006
6940230	Modular lamp controller Methods, apparatus, and systems are provided concerning modular lamp controllers. In one embodiment, a modular lamp controller dims a high intensity discharge lamp based upon occupancy. The lamp has a port within its fixture, and the port is coupled to a lamp capaci...	09/06/2005
6856101	Method and apparatus for switching of parallel capacitors in an HID bi-level dimming system using voltage suppression Switching of parallel capacitors in an HID bi-level lighting control system is accomplished through use of transient voltage suppression across an electronic relay for discharge of residual charge from a switched capacitor when combined peak voltage exceeds clamping...	02/15/2005
6853150	Light emitting diode driver A LED driver includes a high frequency inverter and an impedance circuit. The high frequency inverter operates to produce a high frequency voltage source whereby the impedance circuit directs a flow of alternating current through a LED array including one or more an...	02/08/2005
6392358	Liquid crystal display backlighting circuit The present invention is a system and method for directing the flow of current supplied for a collection of light emitting diodes to provide for rapid flashing of the light emitting diodes and a wide dimming range. A fixed amount of current may be availab...	05/21/2002
5909088	Motion activated illuminating footwear and light module therefor with sequential oscillating lights A light module for use with a plurality of light sources mounted to footwear, includes a power supply for supplying power; an oscillation circuit for sequentially supplying power to the light sources to sequentially cause illumination of the light sources...	06/01/1999
5866994	Illumination apparatus and frame to which the illumination apparatus is attached An illumination apparatus for illuminating paintings at least a part of which is painted by a particular paint that emits or reflects light upon reception of ultraviolet ray, has a first illumination lamp constituted of an ultraviolet lamp and a second il...	02/02/1999
5854539	Electroluminescent lamp driver circuit with signal tracking An electroluminescent lamp is driven by a driving circuit that can supply an approximately sinusoidal signal, a bi-directional sawtooth signal or a single-ended sawtooth signal. Switches selectively transfer energy from a battery to an inductor and then f...	12/29/1998
5451843	Apparatus and method for providing bilevel illumination A lighting fixture has a lamp and a housing for a lamp ballast. In the new fixture for providing bilevel illumination, the housing also contains a control device comprised of a dual capacitor and a "random crossing" relay connected to the capacitor. A sin...	09/19/1995
5414326	Sequential on-off type serial lamp set constructed by varied thermo delay time constant A flashing lamp set includes a plurality of gas-filled filament bulbs (101) having respective rise-time constants which are different from each other, thereby providing different thermo-optical effects. When power is supplied, the lamps are illuminated in...	05/09/1995
5006724	Control device for light sets A control device for varying the current flow through a load includes a power supply, a function generator connected to the power source and producing at least one output signal of triangular waveform, and power switching units for modulating the current ...	04/09/1991
4713586	Decorative light sets The present invention is an improved decorative light set with clusters of light bulbs, an electric circuit and a d.c. power source for actuating the bulbs of clusters of the light bulbs and the electric circuit, wherein the circuit has two oscillators fo...	12/15/1987
4682079	Light string ornament circuitry A decorative device is disclosed which includes a motor, music module or other electrical loads and electrical circuitry and a connector for connection to a selected socket of a string of conventional sockets for connection to an A.C. line. The connector ...	07/21/1987
4534035	Tandem electric discharges for exciting lasers This invention relates to a method and apparatus by which two series-connected glow discharge devices may be connected to a main power supply without interposing an output switch. The two series-connected glow discharge devices may be used within a single...	08/06/1985
4340842	Christmas tree decoration A decoration under a Christmas tree, including a miniature fence on each side of a little fence gate, each fence post having an electric lamp mounted upon its top, a spring-wound motor reciprocally swinging the gate open and closed, and each time the gate...	07/20/1982

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Class 315/186 - Periodic switch in the supply circuit