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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 |
| 6459215 |
Integral lamp |
Oct. 1, 2002 |
| 6452344 |
Electronic dimming ballast |
Sep. 17, 2002 |
| 6452345 |
Discharge lamp operating device |
Sep. 17, 2002 |
| 6453217 |
Frequency switching method by microcomputer and frequency switching device |
Sep. 17, 2002 |
| 6445139 |
Led luminaire with electrically adjusted color balance |
Sep. 3, 2002 |
| 6445141 |
Power supply for gas discharge lamp |
Sep. 3, 2002 |
| 6445142 |
Apparatus and method for remotely detecting a magnetic ballast |
Sep. 3, 2002 |
| 6445143 |
Inverter for LCD backlight |
Sep. 3, 2002 |
| 6441564 |
High efficacy pulsed, dimmable high pressure cesium lamp |
Aug. 27, 2002 |
| 6441713 |
Discharge lamp apparatus |
Aug. 27, 2002 |
| 6437515 |
Discharge lamp lighting device of high startability with high pulse voltage |
Aug. 20, 2002 |
| 6437519 |
Discharge lamp lighting circuit |
Aug. 20, 2002 |
| 6437520 |
Electronic ballast with cross-coupled outputs |
Aug. 20, 2002 |
| 6433483 |
Jewellery illumination |
Aug. 13, 2002 |
| 6429605 |
Control sequence for electronic ballast |
Aug. 6, 2002 |
| 6426570 |
Incandescent power converter with complementary switches |
Jul. 30, 2002 |
| 6426599 |
Dual-use electronic transceiver set for wireless data networks |
Jul. 30, 2002 |
| 6424100 |
Fluorescent lamp operating apparatus and compact self-ballasted fluorescent lamp |
Jul. 23, 2002 |
| 6424101 |
Electronic ballast with feed-forward control |
Jul. 23, 2002 |
| 6420836 |
Switching arrangement |
Jul. 16, 2002 |
| 6420839 |
Power supply system for multiple loads and driving system for multiple lamps |
Jul. 16, 2002 |
| 6417631 |
Integrated bridge inverter circuit for discharge lighting |
Jul. 9, 2002 |
| 6414437 |
Apparatus and method for controlling illumination devices of vehicles |
Jul. 2, 2002 |
| 6414448 |
Electronic ballast for a gas discharge lamp |
Jul. 2, 2002 |
| 6414449 |
Universal electronic ballast |
Jul. 2, 2002 |
| 6411040 |
Apparatus and circuit for operating a discharge lamp of a motor vehicle at two power levels |
Jun. 25, 2002 |
| 6411044 |
Switching device |
Jun. 25, 2002 |
| 6404140 |
High frequency electronic ballast for ceramic metal halide lamp |
Jun. 11, 2002 |
| 6404145 |
Apparatus for and method of controlling backlight for liquid crystal display |
Jun. 11, 2002 |
| 6400096 |
Control circuit for piezo transformer based fluorescent lamp power supplies |
Jun. 4, 2002 |
| 6392353 |
Circuit device for dimming a discharge lamp |
May. 21, 2002 |
| 6392355 |
Closed-loop cold cathode current regulator |
May. 21, 2002 |
| 6392362 |
Discharge lamp lighting circuit |
May. 21, 2002 |
| 6392363 |
Starter for a gas discharge lamp, especially a high pressure gas discharge lamp for automobile headlights |
May. 21, 2002 |
| 6392364 |
High voltage discharge lamp apparatus for vehicles |
May. 21, 2002 |
| 6393381 |
Lamp monitoring and control unit and method |
May. 21, 2002 |
| 6393382 |
Lamp monitoring and control system and method |
May. 21, 2002 |
| 6388392 |
System for providing auxiliary power to lighting unit for heavy equipment having a direct current power supply and no uninterruptible power supply |
May. 14, 2002 |
| 6388397 |
Discharge lamp lighting device |
May. 14, 2002 |
| 6388398 |
Mixed mode control for ballast circuit |
May. 14, 2002 |
| 6384544 |
High intensity discharge lamp ballast |
May. 7, 2002 |
| 6385068 |
Circuit device |
May. 7, 2002 |
| 6380692 |
Phase controlled dimming system with active filter for preventing flickering and undesired intensity changes |
Apr. 30, 2002 |
| 6380694 |
Variable structure circuit topology for HID lamp electronic ballasts |
Apr. 30, 2002 |
| 6376999 |
Electronic ballast employing a startup transient voltage suppression circuit |
Apr. 23, 2002 |
| 6377000 |
Electronic ballast for gas discharge lamp |
Apr. 23, 2002 |
| 6377107 |
Fast turn-off circuit arrangement |
Apr. 23, 2002 |
| 6373199 |
Reducing stress on ignitor circuitry for gaseous discharge lamps |
Apr. 16, 2002 |
| 6373201 |
Reliable lamp life timer |
Apr. 16, 2002 |
| 6369522 |
Metal halide lamp lumen depreciation improvement |
Apr. 9, 2002 |
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