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Class Information
Number: 315/209PZ
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit > Piezoelectric ignition systems
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7282866 |
Discharge lamp lighting apparatus |
Oct. 16, 2007 |
| 7196475 |
Image forming apparatus utilizing a piezoelectric-transformer high-voltage power supply and method for controlling the same |
Mar. 27, 2007 |
| 7166969 |
Drive circuit for illumination unit |
Jan. 23, 2007 |
| 7157861 |
Push-pull inverter circuit |
Jan. 2, 2007 |
| 7091674 |
Rare gas fluorescent lamp device |
Aug. 15, 2006 |
| 7049760 |
Camera flash circuit using a piezoelectric transformer to trigger firing of the camera flash tube |
May. 23, 2006 |
| 7042171 |
Multiple-CCFL parallel driving circuit and the associated current balancing control method for liquid crystal display |
May. 9, 2006 |
| 7023142 |
Light modulation method and apparatus for cold cathode fluorescent lamps |
Apr. 4, 2006 |
| 6989626 |
Piezoelectric transformer |
Jan. 24, 2006 |
| 6969956 |
Current control apparatus for fluorescent lamps |
Nov. 29, 2005 |
| 6911787 |
Driving method and driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel |
Jun. 28, 2005 |
| 6911786 |
CCFL circuit with independent adjustment of frequency and duty cycle |
Jun. 28, 2005 |
| 6903517 |
Cold-cathode driver and liquid crystal display |
Jun. 7, 2005 |
| 6864644 |
Method of tuning a circuit for energizing a cold cathode fluorescent lamp |
Mar. 8, 2005 |
| 6853153 |
System and method for powering cold cathode fluorescent lighting |
Feb. 8, 2005 |
| 6812623 |
Piezoelectric transformer |
Nov. 2, 2004 |
| 6794796 |
Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer |
Sep. 21, 2004 |
| 6768272 |
Apparatus for driving a fluorescent lamp |
Jul. 27, 2004 |
| 6758199 |
Tuned power ignition system |
Jul. 6, 2004 |
| 6737816 |
Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer |
May. 18, 2004 |
| 6639367 |
Control circuit employing preconditioned feedback amplifier for initializing VCO operating frequency |
Oct. 28, 2003 |
| 6603272 |
Rosen type piezoelectric transformer with multiple output electrodes, and stabilizer for multiple light source using that |
Aug. 5, 2003 |
| 6600273 |
High-power electronic ballast for fluorescent lamp |
Jul. 29, 2003 |
| 6566821 |
Drive device and drive method for a cold cathode fluorescent lamp |
May. 20, 2003 |
| 6566820 |
Piezoelectric transformer with multiple outputs |
May. 20, 2003 |
| 6545426 |
Control circuit using piezoelectric ceramic transformer for driving back-light devices |
Apr. 8, 2003 |
| 6531830 |
Discharge-lamp drive apparatus |
Mar. 11, 2003 |
| 6509671 |
Driving method and driving circuit for piezoelectric transformer, cold cathode tube emission device, liquid crystal panel and liquid crystal panel built-in apparatus |
Jan. 21, 2003 |
| 6509700 |
Apparatus and method for driving a cathode discharge tube |
Jan. 21, 2003 |
| 6501209 |
Piezoelectric transformer driving circuit |
Dec. 31, 2002 |
| 6433458 |
Method and unit for driving piezoelectric transformer used for controlling luminance of cold-cathode tube |
Aug. 13, 2002 |
| 6400096 |
Control circuit for piezo transformer based fluorescent lamp power supplies |
Jun. 4, 2002 |
| 6294878 |
Piezoelectric transformer, piezoelectric inverter and liquid crystal display |
Sep. 25, 2001 |
| 6285136 |
Lighting driver for discharge lamp |
Sep. 4, 2001 |
| 6281637 |
Piezoelectric transformer and discharge lamp device |
Aug. 28, 2001 |
| 6278625 |
Inverter circuit with multilayer piezoelectric transformer |
Aug. 21, 2001 |
| 6184631 |
Piezoelectric inverter |
Feb. 6, 2001 |
| 6181073 |
Piezoelectric illumination control for microscope |
Jan. 30, 2001 |
| 6166493 |
Electric multispark ignition system, insensitive to moisture and wet |
Dec. 26, 2000 |
| 6153962 |
Piezoelectric transformer inverter |
Nov. 28, 2000 |
| 6124678 |
Fluorescent lamp excitation circuit having a multi-layer piezoelectric acoustic transformer and methods for using the same |
Sep. 26, 2000 |
| 6118221 |
Cold-cathode tube lighting circuit with protection circuit for piezoelectric transformer |
Sep. 12, 2000 |
| 6104141 |
Inventer-ballast using a piezoelectric transformer |
Aug. 15, 2000 |
| 6034484 |
Piezoelectronic ballast for fluorescent lamp |
Mar. 7, 2000 |
| 5998938 |
Circuit arrangement with a piezoelectric transformer |
Dec. 7, 1999 |
| 5998937 |
Light controller connected to piezoelectric transformer for controlling cold cathode tube by changing frequency or duty factor depending upon luminous intensity |
Dec. 7, 1999 |
| 5959412 |
Inverter circuit for discharge tube having impedance matching circuit |
Sep. 28, 1999 |
| 5910711 |
Discharge lamp dimmer circuit with piezo-electric transformer and adjustable capacitor |
Jun. 8, 1999 |
| 5886477 |
Driver of cold-cathode fluorescent lamp |
Mar. 23, 1999 |
| 5856727 |
Multi-purpose safety light |
Jan. 5, 1999 |
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