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Class Information
Number: 315/307
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation > Automatic regulation
Description: Systems wherein the regulation of the current or potential supplied to the load device is automatically controlled in response to some condition.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7262560 |
Regulating a light source using a light-to-frequency converter |
Aug. 28, 2007 |
| 7262558 |
Lamp current control device |
Aug. 28, 2007 |
| 7259527 |
Stepped dimming ballast for fluorescent lamps |
Aug. 21, 2007 |
| 7259524 |
Apparatus and methods for regulating delivery of electrical energy |
Aug. 21, 2007 |
| 7259523 |
Circuit arrangement |
Aug. 21, 2007 |
| 7256762 |
Switch frequency adjusting system and method for burst mode of liquid crystal display |
Aug. 14, 2007 |
| 7256689 |
Flashing device for vehicle |
Aug. 14, 2007 |
| 7256553 |
Lamp driving system controlled by electrical isolation |
Aug. 14, 2007 |
| 7253568 |
High pressure discharge lamp lighting apparatus |
Aug. 7, 2007 |
| 7253567 |
Low-visual noise, jitterized pulse width modulation brightness control circuit |
Aug. 7, 2007 |
| 7250732 |
High pressure discharge lamp control system and method |
Jul. 31, 2007 |
| 7248002 |
Light emission control apparatus and light emission control method with temperature-sensitive driving current control |
Jul. 24, 2007 |
| 7248001 |
Method and system for modulating frequency in a night vision system power system |
Jul. 24, 2007 |
| 7248000 |
Operating device and method for operating gas discharge lamps |
Jul. 24, 2007 |
| 7247999 |
Dimmer for use with a three-way switch |
Jul. 24, 2007 |
| 7247996 |
Projector |
Jul. 24, 2007 |
| 7245373 |
Spectrometer system for optical reflectance measurements |
Jul. 17, 2007 |
| 7245228 |
Portable electronic apparatus with controlled light sources |
Jul. 17, 2007 |
| 7245090 |
Switching LED driver with temperature compensation to program LED current |
Jul. 17, 2007 |
| 7245089 |
Switching LED driver |
Jul. 17, 2007 |
| 7242155 |
Discharge lamp driving circuit |
Jul. 10, 2007 |
| 7242154 |
Circuit arrangement and method for operation of lamps |
Jul. 10, 2007 |
| 7242153 |
Pulse width modulation inverter circuit and control method thereof |
Jul. 10, 2007 |
| 7239094 |
Electronic ballast with adaptive lamp preheat and ignition |
Jul. 3, 2007 |
| 7235933 |
Reversible dimmer device of gas discharge lamps and the control method for light adjusting thereof |
Jun. 26, 2007 |
| 7235932 |
High efficiency ballast for gas discharge lamps |
Jun. 26, 2007 |
| 7233117 |
Inverter controller with feed-forward compensation |
Jun. 19, 2007 |
| 7233116 |
Method for stabilizing brightness of a cold cathode fluorescent lamp and related apparatus |
Jun. 19, 2007 |
| 7233112 |
PWM switching power supply control methods |
Jun. 19, 2007 |
| 7230613 |
Display driver supporting a dimming mode |
Jun. 12, 2007 |
| 7230388 |
Lighting of discharge lamp by frequency control |
Jun. 12, 2007 |
| 7230387 |
Electroluminescent device including a programmable pattern generator |
Jun. 12, 2007 |
| 7227763 |
Power supply apparatus using half-bridge circuit |
Jun. 5, 2007 |
| 7224128 |
Device for driving light emitting diode strings |
May. 29, 2007 |
| 7221111 |
Switching power supply device and method of controlling the switching device |
May. 22, 2007 |
| 7221101 |
Lamp driving device |
May. 22, 2007 |
| 7218656 |
Control of spectral content of a laser diode light source |
May. 15, 2007 |
| 7218066 |
Driver for a gas discharge lamp |
May. 15, 2007 |
| 7218065 |
Discharge lamp lighting circuit |
May. 15, 2007 |
| 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 |
| 7218059 |
Discharge-lamp control device |
May. 15, 2007 |
| 7218056 |
Lighting device with multiple power sources and multiple modes of operation |
May. 15, 2007 |
| 7213940 |
Lighting device and lighting method |
May. 8, 2007 |
| 7211970 |
Discharge lamp lighting device and lighting unit |
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 |
| 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 |
| 7202611 |
Discharge lamp lighting device |
Apr. 10, 2007 |
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