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Class Information
Number: 315/308
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation > Automatic regulation > Regulator responsive to plural conditions
Description: Systems wherein the regulating means is responsive to two or more conditions; such as, the current and the voltage of the circuit, or a condition of the load device and the current or voltage of the circuit.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6605906 |
Light source device |
Aug. 12, 2003 |
| 6600275 |
Remote control and adjustable device for halogen lamp |
Jul. 29, 2003 |
| 6600271 |
Method and apparatus of an improved electronics ballast circuit |
Jul. 29, 2003 |
| 6597131 |
Discharge lamp lighting circuit |
Jul. 22, 2003 |
| 6583587 |
Discharge lamp lighting circuit |
Jun. 24, 2003 |
| 6583571 |
Emergency illuminator |
Jun. 24, 2003 |
| 6577079 |
Electronic ballast with intermediate circuit regulation |
Jun. 10, 2003 |
| 6573666 |
Digital regulation of fluorescent lamps |
Jun. 3, 2003 |
| 6563275 |
Discharge lamp lighting circuit |
May. 13, 2003 |
| 6559608 |
Lamp-voltage threshold detector |
May. 6, 2003 |
| 6555971 |
High frequency, high efficiency quick restart lighting system |
Apr. 29, 2003 |
| 6552501 |
Discharge lamp lighting circuit with protection circuit |
Apr. 22, 2003 |
| 6522089 |
Electronic ballast and method for arc straightening |
Feb. 18, 2003 |
| 6515881 |
Inverter operably controlled to reduce electromagnetic interference |
Feb. 4, 2003 |
| 6509698 |
Operating apparatus of discharge lamp |
Jan. 21, 2003 |
| 6509699 |
Digital controlled electronic ballast with piezoelectric transformer |
Jan. 21, 2003 |
| 6507159 |
Controlling method and system for RGB based LED luminary |
Jan. 14, 2003 |
| 6501235 |
Microcontrolled ballast compatible with different types of gas discharge lamps and associated methods |
Dec. 31, 2002 |
| 6495973 |
Lighting control system and method |
Dec. 17, 2002 |
| 6489732 |
Discharge lamp lighting circuit |
Dec. 3, 2002 |
| 6486620 |
Discharge lamp lighting circuit |
Nov. 26, 2002 |
| 6486621 |
Electronic system for generating and controlling light effects on projectors |
Nov. 26, 2002 |
| 6472830 |
Discharge lamp lighting circuit |
Oct. 29, 2002 |
| 6445135 |
Electric-discharge lamp control apparatus and electric-discharge lamp control method |
Sep. 3, 2002 |
| 6437994 |
LLC converter includes a current variation detector for correcting a frequency adjusting control signal of an included difference detector |
Aug. 20, 2002 |
| 6437515 |
Discharge lamp lighting device of high startability with high pulse voltage |
Aug. 20, 2002 |
| 6437519 |
Discharge lamp lighting circuit |
Aug. 20, 2002 |
| 6429603 |
Discharge lamp lighting apparatus |
Aug. 6, 2002 |
| 6407935 |
High frequency electronic ballast with reactive power compensation |
Jun. 18, 2002 |
| 6392353 |
Circuit device for dimming a discharge lamp |
May. 21, 2002 |
| 6381551 |
Method for providing an output signal having a desired value of a characteristic quantity at the output of a switched-mode power supply unit and circuit for carrying out the method |
Apr. 30, 2002 |
| 6376998 |
Feeding device for discharge lamp |
Apr. 23, 2002 |
| 6362578 |
LED driver circuit and method |
Mar. 26, 2002 |
| 6362573 |
Apparatus and method for monitoring the life of arc lamp bulbs |
Mar. 26, 2002 |
| 6359393 |
Dimmer for a gas discharge lamp employing frequency shifting |
Mar. 19, 2002 |
| 6353291 |
Electroluminescent lamp controller |
Mar. 5, 2002 |
| 6340870 |
Lighting circuit for discharge lamp |
Jan. 22, 2002 |
| 6333608 |
Driving apparatus for vehicular display unit |
Dec. 25, 2001 |
| 6333607 |
High voltage discharge lamp device |
Dec. 25, 2001 |
| 6316887 |
Multiple ignition high intensity discharge ballast control circuit |
Nov. 13, 2001 |
| 6310447 |
Method for operating at least one fluorescent lamp, and electronic ballast therefor |
Oct. 30, 2001 |
| 6300726 |
Ballast for high-pressure gas discharge lamp |
Oct. 9, 2001 |
| 6281642 |
Ballast for a discharge lamp with false deactivation detection |
Aug. 28, 2001 |
| 6278245 |
Buck-boost function type electronic ballast with bus capacitor current sensing |
Aug. 21, 2001 |
| 6262542 |
Electronic ballast system |
Jul. 17, 2001 |
| 6246174 |
Device for controlling the brightness of an instrumentation light of an automobile |
Jun. 12, 2001 |
| 6225759 |
Method and apparatus for controlling lights |
May. 1, 2001 |
| 6211623 |
Fully integrated ballast IC |
Apr. 3, 2001 |
| 6208089 |
Discharge-lamp lighting circuit |
Mar. 27, 2001 |
| 6184632 |
Lighting apparatus including circuit to detect an electrical characteristic of a component of a lamp mounted in the apparatus |
Feb. 6, 2001 |
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