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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 |
| 6794831 |
Non-flickering illumination based communication |
Sep. 21, 2004 |
| 6794832 |
Lighting method and apparatus for high-pressure discharge lamp, and high-pressure discharge lamp apparatus |
Sep. 21, 2004 |
| 6791279 |
Single-switch electronic dimming ballast |
Sep. 14, 2004 |
| 6791281 |
High pressure discharge lamp lighting apparatus and luminaire using thereof |
Sep. 14, 2004 |
| 6791282 |
Apparatus and method for operating an appliance light |
Sep. 14, 2004 |
| 6791283 |
Dual mode regulated light-emitting diode module for flashlights |
Sep. 14, 2004 |
| 6791285 |
Lamp color control for dimmed high intensity discharge lamps |
Sep. 14, 2004 |
| 6791286 |
Hid lamp operating circuit |
Sep. 14, 2004 |
| 6788001 |
Lighting system with caring preheating of gas discharge lamps |
Sep. 7, 2004 |
| 6788010 |
Operating appliance and an operating method for high-pressure lamps |
Sep. 7, 2004 |
| 6784622 |
Single switch electronic dimming ballast |
Aug. 31, 2004 |
| 6784626 |
Electronic ballast and lighting fixture |
Aug. 31, 2004 |
| 6781326 |
Ballast with lamp sensor and method therefor |
Aug. 24, 2004 |
| 6781327 |
Discharge lamp lighting device |
Aug. 24, 2004 |
| 6774580 |
Inverter circuit for a discharge tube |
Aug. 10, 2004 |
| 6768272 |
Apparatus for driving a fluorescent lamp |
Jul. 27, 2004 |
| 6768274 |
Ballast with lamp-to-earth-ground fault protection circuit |
Jul. 27, 2004 |
| 6765355 |
Apparatus for lighting a discharge lamp at electric characteristics appropriate to a type of the discharge lamp |
Jul. 20, 2004 |
| 6762569 |
Constant light output circuit and electrical components based thereon |
Jul. 13, 2004 |
| 6759811 |
Light source device |
Jul. 6, 2004 |
| 6759812 |
Discharge lamp lighting circuit for detecting failure of a switching element |
Jul. 6, 2004 |
| 6759813 |
Operating circuit for a discharge lamp with frequency-variable ignition |
Jul. 6, 2004 |
| 6756661 |
Semiconductor device, a semiconductor module loaded with said semiconductor device and a method of manufacturing said semiconductor device |
Jun. 29, 2004 |
| 6753658 |
Electronic ballast circuit for operating a high intensity discharge lamp |
Jun. 22, 2004 |
| 6753660 |
Method and arrangement with control gear, and control gear |
Jun. 22, 2004 |
| 6753661 |
LED-based white-light backlighting for electronic displays |
Jun. 22, 2004 |
| 6750619 |
Electronic ballast with filament detection |
Jun. 15, 2004 |
| 6750620 |
Discharge lamp igniter device and projector device |
Jun. 15, 2004 |
| 6747418 |
Device and method for preheating the coil electrodes of a fluorescent lamp |
Jun. 8, 2004 |
| 6747420 |
Drive circuit for light-emitting diodes |
Jun. 8, 2004 |
| 6747421 |
Self oscillation circuits |
Jun. 8, 2004 |
| 6747422 |
High-voltage discharge lamp device |
Jun. 8, 2004 |
| 6747423 |
Circuit configuration to operate a gas discharge lamp |
Jun. 8, 2004 |
| 6744222 |
Discharge lamp lighting apparatus and lamp apparatus |
Jun. 1, 2004 |
| 6741043 |
Ballast with adaptive end-of-lamp-life protection |
May. 25, 2004 |
| 6734640 |
System and method for electronic ballast design |
May. 11, 2004 |
| 6731078 |
Ballast for operating electric lamps |
May. 4, 2004 |
| 6727662 |
Dimming control system for electronic ballasts |
Apr. 27, 2004 |
| 6727663 |
Circuit arrangement for feeding a load |
Apr. 27, 2004 |
| 6727665 |
Dimmer for energy saving lamp |
Apr. 27, 2004 |
| 6724157 |
Energy savings device and method for a resistive and/or an inductive load |
Apr. 20, 2004 |
| 6720734 |
Oximeter with nulled op-amp current feedback |
Apr. 13, 2004 |
| 6720740 |
Discharge lamp ballast circuit having snubber circuit |
Apr. 13, 2004 |
| 6717367 |
Emergency lighting arrangement and apparatus |
Apr. 6, 2004 |
| 6717369 |
Driver circuit with load discharge detection |
Apr. 6, 2004 |
| 6717370 |
High speed stop circuit for an electronic ballast |
Apr. 6, 2004 |
| 6717565 |
Illuminating apparatus for a liquid crystal monitor and a digital camera having a liquid crystal monitor utilizing an illuminating apparatus thereof |
Apr. 6, 2004 |
| 6713744 |
Scanner having cold-cathode-tube light source and method of controlling a drive signal for illuminating a cold-cathode-tube light source |
Mar. 30, 2004 |
| 6710546 |
Remote control test apparatus |
Mar. 23, 2004 |
| 6710554 |
Dimmer arrangement for gas discharge lamp with inductive ballast |
Mar. 23, 2004 |
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