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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 |
| 6181087 |
Discharge lamp operating device |
Jan. 30, 2001 |
| 6181079 |
High power electronic ballast with an integrated magnetic component |
Jan. 30, 2001 |
| 6181083 |
Ballast circuit with controlled strike/restart |
Jan. 30, 2001 |
| 6175190 |
Discharge-lamp lighting circuit |
Jan. 16, 2001 |
| 6163115 |
High-pressure discharge lamp lighting apparatus system |
Dec. 19, 2000 |
| 6160358 |
Ballast circuit with lamp current regulating circuit |
Dec. 12, 2000 |
| 6160361 |
For improvements in a lamp type recognition scheme |
Dec. 12, 2000 |
| 6160362 |
Ignition scheme for a high intensity discharge lamp |
Dec. 12, 2000 |
| 6153987 |
Lighting circuit for discharge lamp |
Nov. 28, 2000 |
| 6150775 |
Contact actuated lamp |
Nov. 21, 2000 |
| 6147463 |
Electronic ballast for the operation of at least one gas discharge lamp |
Nov. 14, 2000 |
| 6127789 |
Apparatus for controlling the lighting of a discharge lamp by controlling the input power of the lamp |
Oct. 3, 2000 |
| 6124682 |
Lamp driver circuit using resonant circuit for starting lamp |
Sep. 26, 2000 |
| 6107754 |
Electronic ballast for high-intensity discharge lamp and method of driving high-intensity discharge lamp |
Aug. 22, 2000 |
| 6094016 |
Electronic ballast |
Jul. 25, 2000 |
| 6072283 |
Micro-controller-operated high intensity discharge lamp ballast system and method |
Jun. 6, 2000 |
| 6069457 |
Method and apparatus for controlling lights and other devices |
May. 30, 2000 |
| 6057654 |
Method and apparatus for automatically controlling a lighting load |
May. 2, 2000 |
| 6051939 |
Method and apparatus for controlling the power of a high-pressure gas-discharge lamp |
Apr. 18, 2000 |
| 6034490 |
Lighting circuit for discharge lamp |
Mar. 7, 2000 |
| 6028396 |
Luminaire diagnostic system |
Feb. 22, 2000 |
| 6025679 |
Lighting space controller |
Feb. 15, 2000 |
| 6011363 |
Constant wattage electric ballast circuit for lamp |
Jan. 4, 2000 |
| 6008595 |
Field emission lamp structures |
Dec. 28, 1999 |
| 6002215 |
Lighting circuit for discharge lamp |
Dec. 14, 1999 |
| 6002210 |
Electronic ballast with controlled-magnitude output voltage |
Dec. 14, 1999 |
| 5990634 |
Dynamic range dimmer for gas discharge lamps |
Nov. 23, 1999 |
| 5982114 |
Control apparatus for copying machine or the like |
Nov. 9, 1999 |
| 5982111 |
Fluorescent lamp ballast having a resonant output stage using a split resonating inductor |
Nov. 9, 1999 |
| 5973457 |
Lighting circuit for discharge lamp |
Oct. 26, 1999 |
| 5973458 |
Sequential feedback control system for an electronic ballast |
Oct. 26, 1999 |
| 5969482 |
Circuit arrangement for operating a discharge lamp including real power sensing using a single quadrant multiplier |
Oct. 19, 1999 |
| 5962981 |
Discharge lamp lighting device |
Oct. 5, 1999 |
| 5962989 |
Energy management control system |
Oct. 5, 1999 |
| 5952791 |
Apparatus for detecting abnormal states in a discharge tube circuit and information processing system |
Sep. 14, 1999 |
| 5952793 |
Discharge lamp igniting apparatus including feedback control |
Sep. 14, 1999 |
| 5945788 |
Electronic ballast with inverter control circuit |
Aug. 31, 1999 |
| 5942860 |
Electronic ballast for a high intensity discharge lamp with automatic acoustic resonance avoidance |
Aug. 24, 1999 |
| 5939835 |
Discharge lamp lighting device with power system, control system and power source system |
Aug. 17, 1999 |
| 5939838 |
Ferroresonant transformer ballast for maintaining the current of gas discharge lamps at a predetermined value |
Aug. 17, 1999 |
| 5939832 |
Safety disconnection with asymmetric lamp power |
Aug. 17, 1999 |
| 5936361 |
Discharge lamp lighting circuit with lighting condition detector |
Aug. 10, 1999 |
| 5936357 |
Electronic ballast that manages switching frequencies for extrinsic purposes |
Aug. 10, 1999 |
| 5925990 |
Microprocessor controlled electronic ballast |
Jul. 20, 1999 |
| 5910713 |
Discharge lamp igniting apparatus for performing a feedback control of a discharge lamp and the like |
Jun. 8, 1999 |
| 5909090 |
Light-emission controlling apparatus |
Jun. 1, 1999 |
| 5907224 |
Abnormality detecting circuit for discharge lamp with delayed interruption for undervoltage |
May. 25, 1999 |
| 5883473 |
Electronic Ballast with inverter protection circuit |
Mar. 16, 1999 |
| 5877596 |
Universal electronic ballast for a family of fluorescent lamps |
Mar. 2, 1999 |
| 5872431 |
Efficient power transfer in electronic ballast |
Feb. 16, 1999 |
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