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Class Information
Number: 315/276
Name: Electric lamp and discharge devices: systems > Pulsating or a.c. supply > Transformer in the supply circuit
Description: Systems provided with a transformer connected between the source of supply and the load device for supplying electric current and/or potential to the load device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7626338 |
Discharge lamp lighting apparatus |
Dec. 1, 2009 |
| 7622870 |
Inverter apparatus |
Nov. 24, 2009 |
| 7619371 |
Inverter for driving backlight devices in a large LCD panel |
Nov. 17, 2009 |
| 7619372 |
Method and apparatus for driving a light emitting diode |
Nov. 17, 2009 |
| 7615936 |
Inductively powered apparatus |
Nov. 10, 2009 |
| 7605546 |
Discharge lamp lighting apparatus and semiconductor integrated circuit |
Oct. 20, 2009 |
| 7589478 |
Inverter circuit for discharge lamps for multi-lamp lighting and surface light source system |
Sep. 15, 2009 |
| 7586269 |
Device for driving light source module |
Sep. 8, 2009 |
| 7579784 |
Switching power supply and its control circuit, and electronic apparatus employing such switching power supply |
Aug. 25, 2009 |
| 7579787 |
Methods and protection schemes for driving discharge lamps in large panel applications |
Aug. 25, 2009 |
| 7567040 |
High efficiency driver for color light emitting diodes (LED) |
Jul. 28, 2009 |
| 7567039 |
Multiple discharge lamp lighting apparatus |
Jul. 28, 2009 |
| 7564191 |
Inverter having single switching device |
Jul. 21, 2009 |
| 7564193 |
DC-AC converter having phase-modulated, double-ended, full-bridge topology for powering high voltage load such as cold cathode fluorescent lamp |
Jul. 21, 2009 |
| 7559674 |
Mounting arrangement for LED lamps |
Jul. 14, 2009 |
| 7557516 |
Resonant inverter |
Jul. 7, 2009 |
| 7557514 |
Inverter driving circuit |
Jul. 7, 2009 |
| 7550928 |
Driving circuit for multiple cold cathode fluorescent lamps backlight applications |
Jun. 23, 2009 |
| 7548028 |
Current-mode resonant inverter circuit |
Jun. 16, 2009 |
| 7545106 |
Discharge lamp driving device and driving method |
Jun. 9, 2009 |
| 7528552 |
Power transformer combined with balance windings and application circuits thereof |
May. 5, 2009 |
| 7525260 |
Discharge lamp lighting apparatus |
Apr. 28, 2009 |
| 7525259 |
Primary side regulated power supply system with constant current output |
Apr. 28, 2009 |
| 7525255 |
Split phase inverters for CCFL backlight system |
Apr. 28, 2009 |
| 7525258 |
Current balancing techniques for fluorescent lamps |
Apr. 28, 2009 |
| 7518317 |
Backlight driving and control circuit with an isolated power factor correction structure |
Apr. 14, 2009 |
| 7514878 |
High frequency electronic ballast with sine wave oscillator |
Apr. 7, 2009 |
| 7514882 |
Lamp driving device and method |
Apr. 7, 2009 |
| 7498751 |
High efficiency and low cost cold cathode fluorescent lamp driving apparatus for LCD backlight |
Mar. 3, 2009 |
| 7492106 |
Inverter circuit, backlight assembly, liquid crystal display having the same, and method thereof |
Feb. 17, 2009 |
| 7479740 |
Module for parallel lighting and balancer coil for discharge lamp |
Jan. 20, 2009 |
| 7477022 |
System and method for driving a multi-lamp |
Jan. 13, 2009 |
| 7477021 |
Non-discontinuous neon power supply with high power factor |
Jan. 13, 2009 |
| 7462992 |
Starter circuit having regulated starter voltage |
Dec. 9, 2008 |
| 7449842 |
Discharge tube drive circuit |
Nov. 11, 2008 |
| 7443108 |
Apparatus for driving a plurality of lamps |
Oct. 28, 2008 |
| 7443112 |
Current balancing circuit for a multi-lamp system |
Oct. 28, 2008 |
| 7439684 |
Inductive lamp assembly |
Oct. 21, 2008 |
| 7432669 |
Backlight unit and method for driving the same |
Oct. 7, 2008 |
| 7429831 |
Balance controlling circuit |
Sep. 30, 2008 |
| 7425800 |
Device for driving a light source module |
Sep. 16, 2008 |
| 7411354 |
Feedback and protection circuit of liquid crystal display panel backlight apparatus |
Aug. 12, 2008 |
| 7411356 |
Power supply for multiple discharge lamps and the current balance device thereof |
Aug. 12, 2008 |
| 7408308 |
LED drive circuit, LED lighting device, and backlight |
Aug. 5, 2008 |
| 7402957 |
Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly |
Jul. 22, 2008 |
| 7397199 |
Discharge lamp lighting device |
Jul. 8, 2008 |
| 7391166 |
Parallel lighting system for surface light source discharge lamps |
Jun. 24, 2008 |
| 7391170 |
Device for driving light source module |
Jun. 24, 2008 |
| 7385357 |
Inductively coupled ballast circuit |
Jun. 10, 2008 |
| 7382099 |
Striation control for current fed electronic ballast |
Jun. 3, 2008 |
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