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Class Information
Number: 315/122
Name: Electric lamp and discharge devices: systems > With automatic shunt and/or cutout > Plural load device systems > Series connected load devices
Description: Systems wherein two or more of the load devices are connected in electrical series relation with respect to each other.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8710753 High performance adaptive switched LED driver Apr. 29, 2014
8704446 Solid state light AC line voltage interface with current and voltage limiting Apr. 22, 2014
8704449 LED backlight driving circuit, liquid crystal display device and driving circuit Apr. 22, 2014
8692475 PFC LED driver capable of reducing current ripple Apr. 8, 2014
8692483 Intelligent power control system Apr. 8, 2014
8686645 LED protection circuit Apr. 1, 2014
8668358 Mechanical bypass light unit Mar. 11, 2014
8669706 Integrated circuits, control methods and lighting systems Mar. 11, 2014
8653539 Failure mitigation in arrays of light-emitting devices Feb. 18, 2014
8648537 Methods and apparatus for driving LED-based lighting units Feb. 11, 2014
8643283 Electronic device including circuitry comprising open failure-susceptible components, and open failure-actuated anti-fuse pathway Feb. 4, 2014
8643289 PWM controlling circuit and LED driver circuit having the same Feb. 4, 2014
8624500 Single-ended primary inductance converter (SEPIC) based power supply for driving multiple strings of light emitting diodes (LEDs) in roadway lighting fixtures Jan. 7, 2014
8611057 LED module for sign channel letters and driving circuit Dec. 17, 2013
8604699 Self-power for device driver Dec. 10, 2013
8575845 Method and apparatus to measure light intensity Nov. 5, 2013
8569956 Apparatus, method and system for providing AC line power to lighting devices Oct. 29, 2013
8558462 Driving circuit for cascade light emitting diodes Oct. 15, 2013
8531113 Driving apparatus and driving method of LED device Sep. 10, 2013
8531115 Apparatus and method for bypassing failed LEDs in lighting arrays Sep. 10, 2013
8519635 Light-emitting device Aug. 27, 2013
8476837 Transistor ladder network for driving a light emitting diode series string Jul. 2, 2013
8410705 LED lighting system with bypass circuit for failed LED Apr. 2, 2013
8400064 Zener diode protection network in submount for LEDs connected in series Mar. 19, 2013
8400075 Illumination circuit having bypass circuit controllable according to voltage change of series circuit thereof Mar. 19, 2013
8395325 Method of driving a light source, light source apparatus for performing the method, and display apparatus having the light source apparatus Mar. 12, 2013
8324816 LED driving circuit Dec. 4, 2012
8278827 LED lamp Oct. 2, 2012
8264158 Protection circuit for alternating current light emitting diode Sep. 11, 2012
8174212 LED string driver with light intensity responsive to input voltage May. 8, 2012
8138680 Light string with external resistor unit Mar. 20, 2012
8008864 Single LED string lighting Aug. 30, 2011
7998761 Light emitting diode with ITO layer and method for fabricating the same Aug. 16, 2011
7994725 Floating switch controlling LED array segment Aug. 9, 2011
7819552 Mechanical bypass light unit Oct. 26, 2010
7750576 Light string with external resistor unit Jul. 6, 2010
7700960 Light emitting diode with ITO layer and method for fabricating the same Apr. 20, 2010
7635954 Configuration and method for the manufacture of a failsafe LED or OLED chain Dec. 22, 2009
7633024 Push rod shunt for light string sockets Dec. 15, 2009
7629544 Asymmetric spring coil shunt for light string socket Dec. 8, 2009
7626131 Mechanical shunt for light string socket with self-cleaning feature Dec. 1, 2009
7391161 Series wired light string with unidirectional shunts Jun. 24, 2008
7375476 Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices May. 20, 2008
7339323 Serial powering of an LED string Mar. 4, 2008
7339325 Series wired light string with unidirectional resistive shunts Mar. 4, 2008
7279809 Christmas light string with single Zener shunts Oct. 9, 2007
7239087 Method and apparatus to drive LED arrays using time sharing technique Jul. 3, 2007
7227314 Voltage equalization method and apparatus for low-voltage lighting systems Jun. 5, 2007
7224150 Redundancy circuit for series-connected diodes May. 29, 2007
7157859 Lighting device and lighting system Jan. 2, 2007

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