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Class Information
Number: 315/225
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit > Periodic switch cut-out
Description: Systems having means provided for rendering the periodic switch inoperative to interrupt the circuit when it is so desired.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8710766 |
LED driving circuit, LED illumination appliance, LED illuminator, and LED illumination system |
Apr. 29, 2014 |
| 8704463 |
Temperature control method and apparatus for light emitting diode and liquid crystal display |
Apr. 22, 2014 |
| 8664873 |
Operating circuit for light-emitting diodes |
Mar. 4, 2014 |
| 8664885 |
Circuit for connecting a low current lighting circuit to a dimmer |
Mar. 4, 2014 |
| 8629629 |
Power factor correction in and dimming of solid state lighting devices |
Jan. 14, 2014 |
| 8593072 |
Circuit assembly and method for operating a high pressure discharge lamp |
Nov. 26, 2013 |
| 8575849 |
Resonate driver for solid state light sources |
Nov. 5, 2013 |
| 8552658 |
Light-emitting diode (LED) driver and controller |
Oct. 8, 2013 |
| 8547037 |
Liquid-cooled LED lighting device |
Oct. 1, 2013 |
| 8547038 |
High pressure discharge lamp lighting device |
Oct. 1, 2013 |
| 8531122 |
Circuit arrangement and method for operation of a discharge lamp |
Sep. 10, 2013 |
| 8519636 |
AC LED apparatus |
Aug. 27, 2013 |
| 8502475 |
Discharge lamp ballast with feedback current control during an electrode heating operation |
Aug. 6, 2013 |
| 8497637 |
Constant voltage dimmable LED driver |
Jul. 30, 2013 |
| 8493002 |
Driver for cooperating with a wall dimmer |
Jul. 23, 2013 |
| 8476889 |
Piezoelectric transformer driving device controlled by variable reference voltage values and image forming device |
Jul. 2, 2013 |
| 8471485 |
Dimmer switch assembly |
Jun. 25, 2013 |
| 8450934 |
Circuit arrangement and method for operating a low-pressure discharge lamp |
May. 28, 2013 |
| 8427064 |
Electronic ballast circuit for fluorescent lamps |
Apr. 23, 2013 |
| 8421364 |
Transient suppression for boost regulator |
Apr. 16, 2013 |
| 8415891 |
Lamp ballast circuit and driving method thereof |
Apr. 9, 2013 |
| 8415893 |
Load control device, and lighting device |
Apr. 9, 2013 |
| 8415901 |
Switch sensing emergency lighting device |
Apr. 9, 2013 |
| 8378962 |
LCD backlight driving device with an isolating transformer |
Feb. 19, 2013 |
| 8368322 |
Driving circuit for LED lamp |
Feb. 5, 2013 |
| 8368313 |
Electronic candle and electronic night lamp |
Feb. 5, 2013 |
| 8362711 |
AC LED apparatus |
Jan. 29, 2013 |
| 8358090 |
Dimmer circuit for transformer--isolated LED driver and method therefor |
Jan. 22, 2013 |
| 8344628 |
Dimming electronic ballast with lamp end of life detection |
Jan. 1, 2013 |
| 8344653 |
Light emitting diode backlight driving system |
Jan. 1, 2013 |
| 8339048 |
Hybrid light source |
Dec. 25, 2012 |
| 8334659 |
Electronic driver dimming control using ramped pulsed modulation for large area solid-state OLEDs |
Dec. 18, 2012 |
| 8278830 |
Dynamic headroom control for LCD driver |
Oct. 2, 2012 |
| 8278843 |
Method for operating a switching-mode power supply |
Oct. 2, 2012 |
| 8278831 |
LED driver circuit and method, and system and method for estimating the junction temperature of a light emitting diode |
Oct. 2, 2012 |
| 8274234 |
Dimming ballast with parallel lamp operation |
Sep. 25, 2012 |
| 8258713 |
Supplying a signal to a light source |
Sep. 4, 2012 |
| 8253339 |
Lighting element failure detection devices and methods for power switching based systems |
Aug. 28, 2012 |
| 8246175 |
Lighting device, light source device, projector, and discharge lamp lighting method |
Aug. 21, 2012 |
| 8231230 |
Image projection device |
Jul. 31, 2012 |
| 8217591 |
Power source sensing dimming circuits and methods of operating same |
Jul. 10, 2012 |
| 8193716 |
High-power LED driving circuit |
Jun. 5, 2012 |
| 8174207 |
Lamp and driving device for backlight assembly having the same |
May. 8, 2012 |
| 8129916 |
Light emitting driver circuit with bypass and method |
Mar. 6, 2012 |
| 8129914 |
Operating circuit for light-emitting diodes |
Mar. 6, 2012 |
| 8120266 |
Driving circuit for driving a load |
Feb. 21, 2012 |
| 8120273 |
Light control system with PWM duty cycle control using current signal feedback |
Feb. 21, 2012 |
| 8110998 |
Multi-pulse ignition circuit for a gas discharge lamp |
Feb. 7, 2012 |
| 8106600 |
Photopolymerization apparatus |
Jan. 31, 2012 |
| 8106601 |
LED illuminant driving circuit and automatic brightness compensation method thereof |
Jan. 31, 2012 |
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