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Class Information
Number: 315/291
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation
Description: Systems which include means to regulate the current and/or voltage supplied to the load device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7218063 |
Two light level ballast |
May. 15, 2007 |
| 7218061 |
Circuit arrangement for producing a control signal for the purpose of dimming at least one lamp |
May. 15, 2007 |
| 7218060 |
Flyback ballast for fluorescent lamp |
May. 15, 2007 |
| 7218059 |
Discharge-lamp control device |
May. 15, 2007 |
| 7218054 |
Lamp having fixed phase power controller with analog trigger |
May. 15, 2007 |
| 7215104 |
DC/DC converter |
May. 8, 2007 |
| 7215087 |
Discharge lamp lighting apparatus for lighting multiple discharge lamps |
May. 8, 2007 |
| 7211970 |
Discharge lamp lighting device and lighting unit |
May. 1, 2007 |
| 7211967 |
Strip light with constant current |
May. 1, 2007 |
| 7211965 |
High intensity discharge lamp with current sense resistor |
May. 1, 2007 |
| 7208887 |
Ballast having multiple circuit failure protection and method for ballast circuit protection |
Apr. 24, 2007 |
| 7208886 |
Apparatus for driving cold cathode fluorescent lamps |
Apr. 24, 2007 |
| 7208885 |
Dimming control method and lighting system with dimming control |
Apr. 24, 2007 |
| 7208883 |
Current detection circuit, and power supply apparatus, power supply system and electronic apparatus using the current detection circuit |
Apr. 24, 2007 |
| 7208882 |
Lighting device for discharge lamp |
Apr. 24, 2007 |
| 7208879 |
Lighting apparatus for discharge lamp |
Apr. 24, 2007 |
| 7205728 |
Active matrix liquid crystal display |
Apr. 17, 2007 |
| 7205727 |
Power supply circuit and power supply control method therein |
Apr. 17, 2007 |
| 7205726 |
Discharge lamp drive apparatus and liquid crystal display apparatus |
Apr. 17, 2007 |
| 7205724 |
Backlight driving system for a liquid crystal display device |
Apr. 17, 2007 |
| 7202612 |
Discharge lamp lighting apparatus |
Apr. 10, 2007 |
| 7202611 |
Discharge lamp lighting device |
Apr. 10, 2007 |
| 7202610 |
Device and method for driving organic EL display |
Apr. 10, 2007 |
| 7202609 |
Noise reduction in a power converter |
Apr. 10, 2007 |
| 7202608 |
Switched constant current driving and control circuit |
Apr. 10, 2007 |
| 7199530 |
Digital ballast |
Apr. 3, 2007 |
| 7199528 |
Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies |
Apr. 3, 2007 |
| 7196482 |
PWM controller with automatic low battery power reduction circuit and lighting device incorporating the controller |
Mar. 27, 2007 |
| 7196481 |
Method and drive circuit for controlling LEDs |
Mar. 27, 2007 |
| 7196479 |
Electronic ballast having a protective circuit for a switching transistor of a converter |
Mar. 27, 2007 |
| 7196476 |
Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps |
Mar. 27, 2007 |
| 7193375 |
Electronic ballast having a pump circuit for a discharge lamp having preheatable electrodes |
Mar. 20, 2007 |
| 7193373 |
Electronic ballast having a converter which can continue to operate in the event of lamp failure |
Mar. 20, 2007 |
| 7190127 |
Shutdown circuit |
Mar. 13, 2007 |
| 7190125 |
Programmable wallbox dimmer |
Mar. 13, 2007 |
| 7190119 |
Methods and apparatus for optimizing a substrate in a plasma processing system |
Mar. 13, 2007 |
| 7187140 |
Lamp current control using profile synthesizer |
Mar. 6, 2007 |
| 7183726 |
Cold cathode fluorescent lamp drive apparatus and method |
Feb. 27, 2007 |
| 7183725 |
Backlight inverter system and control method for starting the same |
Feb. 27, 2007 |
| 7183723 |
PWM illumination control circuit with low visual noise for driving LED |
Feb. 27, 2007 |
| 7183721 |
Ballast with circuit for detecting and eliminating an arc condition |
Feb. 27, 2007 |
| 7183692 |
Method for controlling power supply in a buffered modulation mode |
Feb. 27, 2007 |
| 7180252 |
Geometric panel lighting apparatus and methods |
Feb. 20, 2007 |
| 7180251 |
Electronic power circuit for gas discharge lamps |
Feb. 20, 2007 |
| 7180248 |
Inductively coupled ballast circuit |
Feb. 20, 2007 |
| 7178971 |
High efficiency driver for color light emitting diodes (LED) |
Feb. 20, 2007 |
| 7177131 |
Control circuit of power supply with selectable current-limiting modes |
Feb. 13, 2007 |
| 7176639 |
Electronic ballast and controlling method thereof |
Feb. 13, 2007 |
| 7176637 |
Rare gas fluorescent lamp apparatus |
Feb. 13, 2007 |
| 7176636 |
Circuit arrangement for operating a lamp |
Feb. 13, 2007 |
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