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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 |
| 6933684 |
Electronic ballast using cut and save technology |
Aug. 23, 2005 |
| 6934168 |
Single stage PFC and power converter unit |
Aug. 23, 2005 |
| 6924604 |
Method of operating a discharge lamp system and a discharge lamp system using a combination radial and longitudinal acoustic mode to reduce vertical segregation |
Aug. 2, 2005 |
| 6919694 |
Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship |
Jul. 19, 2005 |
| 6919695 |
Overvoltage protection for hid lamp ballast |
Jul. 19, 2005 |
| 6919696 |
Device for operating a high-pressure discharge lamp |
Jul. 19, 2005 |
| 6911788 |
Electronic ballast of high power factor for compact fluorescent lamp |
Jun. 28, 2005 |
| 6906473 |
Feedback circuit and method of operating ballast resonant inverter |
Jun. 14, 2005 |
| 6906476 |
Power control system for reducing power to lighting systems |
Jun. 14, 2005 |
| 6900599 |
Electronic dimming ballast for cold cathode fluorescent lamp |
May. 31, 2005 |
| 6900600 |
Method for starting a discharge lamp using high energy initial pulse |
May. 31, 2005 |
| 6900601 |
Control circuit of two current unidirectional switches |
May. 31, 2005 |
| 6894437 |
Light source device |
May. 17, 2005 |
| 6894440 |
Method and device for lighting an electronic or electromechanical apparatus |
May. 17, 2005 |
| 6891339 |
Adaptive CFL control circuit |
May. 10, 2005 |
| 6888321 |
Device for operating a high pressure discharge lamp |
May. 3, 2005 |
| 6882118 |
Discharge lamp starting device and illumination apparatus |
Apr. 19, 2005 |
| 6879111 |
DC/AC and DC/DC power supply for LCD displays |
Apr. 12, 2005 |
| 6879113 |
Low frequency output electronic ballast |
Apr. 12, 2005 |
| 6879114 |
Fluorescent lamp driver circuit |
Apr. 12, 2005 |
| 6879115 |
Adaptive ballast control IC |
Apr. 12, 2005 |
| 6879117 |
Electronic ballast for fluorescent lamp |
Apr. 12, 2005 |
| 6876159 |
Electronic ballast system for emergency lighting applications |
Apr. 5, 2005 |
| 6873121 |
Fluorescent ballast with unique dimming control |
Mar. 29, 2005 |
| 6864642 |
Electronic ballast with DC output flyback converter |
Mar. 8, 2005 |
| 6861811 |
Half bridge with constant amplitude drive signal |
Mar. 1, 2005 |
| 6858996 |
Driver IC for use with simple microcontrol |
Feb. 22, 2005 |
| 6856101 |
Method and apparatus for switching of parallel capacitors in an HID bi-level dimming system using voltage suppression |
Feb. 15, 2005 |
| 6856102 |
Three-stage electronic ballast for metal halide lamps |
Feb. 15, 2005 |
| 6853152 |
Electric power supply safety interlock system |
Feb. 8, 2005 |
| 6853154 |
Open loop bi-level ballast control |
Feb. 8, 2005 |
| 6850014 |
Discharge lamp circuit for ignition time control and overvoltage protection receivers |
Feb. 1, 2005 |
| 6847174 |
Drive for a half-bridge inverter |
Jan. 25, 2005 |
| 6847175 |
Lighting ballast with reverse current flow protection |
Jan. 25, 2005 |
| 6841950 |
Dimmable electrolumanescent lamp drivers and method therefor |
Jan. 11, 2005 |
| 6841951 |
Single stage HID electronic ballast |
Jan. 11, 2005 |
| 6836077 |
Electronic elimination of striations in linear lamps |
Dec. 28, 2004 |
| 6833678 |
Circuit arrangement for operating discharge lamps |
Dec. 21, 2004 |
| 6831422 |
Operating circuit with an improved power supply for a driver circuit |
Dec. 14, 2004 |
| 6831423 |
High Q impedance matching inverter circuit with automatic line regulation |
Dec. 14, 2004 |
| 6831426 |
Electronic device, or dimmer, for regulating the power supply applied to a load |
Dec. 14, 2004 |
| 6828737 |
Discharge lamp operating circuit with a current regulation circuit and a circuit for detection of the proximity to capacitive operation |
Dec. 7, 2004 |
| 6822399 |
Half-bridge circuit |
Nov. 23, 2004 |
| 6819057 |
Ballast self oscillating inverter with phase controlled voltage feedback |
Nov. 16, 2004 |
| 6815906 |
Gas discharge lamp drive circuitry |
Nov. 9, 2004 |
| 6815907 |
Pulse-width modulation for operating high pressure lamps |
Nov. 9, 2004 |
| 6815908 |
Dimmable self-oscillating electronic ballast for fluorescent lamp |
Nov. 9, 2004 |
| 6815910 |
Device for operating a high pressure discharge lamp |
Nov. 9, 2004 |
| 6803730 |
Single stage PFC + ballast control circuit/general purpose power converter |
Oct. 12, 2004 |
| 6798152 |
Closed loop current control circuit and method thereof |
Sep. 28, 2004 |
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