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Class Information
Number: 315/209R
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7528556 |
Light regulation device |
May. 5, 2009 |
| 7525780 |
Liquid crystal television and backlight power supplying circuit |
Apr. 28, 2009 |
| 7525261 |
Circuit arrangement for operating a high pressure discharge lamp |
Apr. 28, 2009 |
| 7525256 |
HID buck and full-bridge ballast control IC |
Apr. 28, 2009 |
| 7521878 |
Applications of halogen converter control IC |
Apr. 21, 2009 |
| 7521875 |
Electronic light generating element light bulb |
Apr. 21, 2009 |
| 7518320 |
LED control circuit capable of automatically controlling brightness of LEDs according to ambient light conditions |
Apr. 14, 2009 |
| 7518318 |
Circuit for a gas-discharge lamp |
Apr. 14, 2009 |
| 7514883 |
Illuminating device for imaging apparatus |
Apr. 7, 2009 |
| 7514878 |
High frequency electronic ballast with sine wave oscillator |
Apr. 7, 2009 |
| 7511432 |
Discharge lamp lighting device, illumination device, and projector |
Mar. 31, 2009 |
| 7508144 |
Light source device, lighting and driving method thereof and projector |
Mar. 24, 2009 |
| 7501774 |
Multi-button low voltage switch adaptable for three states |
Mar. 10, 2009 |
| 7501747 |
Integrated circuit optical signal emitters |
Mar. 10, 2009 |
| 7498754 |
Architecture for driving multiple loads at constant current |
Mar. 3, 2009 |
| 7498751 |
High efficiency and low cost cold cathode fluorescent lamp driving apparatus for LCD backlight |
Mar. 3, 2009 |
| 7498750 |
Gas discharge lamp driving circuit and method with resonating sweep voltage |
Mar. 3, 2009 |
| 7495398 |
Discharge lamp lighting apparatus |
Feb. 24, 2009 |
| 7486031 |
Symmetric cancelling anti-striation circuit |
Feb. 3, 2009 |
| 7486029 |
Circuit for detecting end of life of fluorescent lamp |
Feb. 3, 2009 |
| 7486028 |
Circuit arrangement |
Feb. 3, 2009 |
| 7482762 |
Discharge lamp ballast with detection of abnormal discharge outside the arc tube |
Jan. 27, 2009 |
| 7479743 |
Vehicle lighting apparatus |
Jan. 20, 2009 |
| 7479742 |
Discharge lamp lighting circuit |
Jan. 20, 2009 |
| 7477025 |
Power control circuit for adjusting light |
Jan. 13, 2009 |
| 7477023 |
Inverter circuit and backlight assembly having the same |
Jan. 13, 2009 |
| 7477021 |
Non-discontinuous neon power supply with high power factor |
Jan. 13, 2009 |
| 7477020 |
Electronic ballast having a reduced reverse voltage at the start |
Jan. 13, 2009 |
| 7474064 |
Lamp driving circuit for a discharge lamp and a control method thereof |
Jan. 6, 2009 |
| 7474062 |
Decoupling circuits |
Jan. 6, 2009 |
| 7466083 |
Protective device for vehicle electronic apparatus |
Dec. 16, 2008 |
| 7463070 |
Switching device for driving LED array by pulse-shaped current modulation |
Dec. 9, 2008 |
| 7462995 |
Transistorized, voltage-controlled dimming circuit |
Dec. 9, 2008 |
| 7462993 |
Dome light |
Dec. 9, 2008 |
| 7459867 |
Program start ballast |
Dec. 2, 2008 |
| 7459861 |
Lamp containing voltage conversion circuit including forward/reverse hybrid phase-control clipping circuit |
Dec. 2, 2008 |
| 7453216 |
Current resonance type inverter circuit and power controlling method |
Nov. 18, 2008 |
| 7453214 |
Lamp-operating unit and low-pressure mercury discharge lamp |
Nov. 18, 2008 |
| 7449848 |
Driving circuit for cold-cathode tube |
Nov. 11, 2008 |
| 7449846 |
Ballast for a gas discharge lamp and a method of controlling this ballast |
Nov. 11, 2008 |
| 7449840 |
Ignitor turn-off switch for HID ballasts |
Nov. 11, 2008 |
| 7446488 |
Metal halide lamp ballast controlled by remote enable switched bias supply |
Nov. 4, 2008 |
| 7446482 |
High pressure discharge lamp lighting apparatus |
Nov. 4, 2008 |
| 7443106 |
Circuit with switch-off device for the operation of light sources |
Oct. 28, 2008 |
| 7443105 |
Ballast circuit for gas discharge lamps |
Oct. 28, 2008 |
| 7443104 |
Lighting apparatus and method for controlling brightness and color location thereof |
Oct. 28, 2008 |
| 7443103 |
High pressure lamp with lamp flicker suppression and lamp voltage control |
Oct. 28, 2008 |
| 7439682 |
Current driving circuit for inductive loads |
Oct. 21, 2008 |
| 7439681 |
Ballast and projector |
Oct. 21, 2008 |
| 7439680 |
Apparatus for safely connecting the lamp to the equipment voltage ground |
Oct. 21, 2008 |
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