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Class Information
Number: 315/209T
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit > Transistorized ignition systems
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7548031 |
Lighting apparatus for discharge lamp |
Jun. 16, 2009 |
| 7541858 |
Integration circuit, decrement circuit, and semiconductor devices |
Jun. 2, 2009 |
| 7459861 |
Lamp containing voltage conversion circuit including forward/reverse hybrid phase-control clipping circuit |
Dec. 2, 2008 |
| 7436127 |
Ballast control circuit |
Oct. 14, 2008 |
| 7432663 |
Circuit for igniting a high intensity discharge lamp |
Oct. 7, 2008 |
| 7432662 |
Circuit arrangement and method for operating at least one lamp |
Oct. 7, 2008 |
| 7385356 |
Energy saving startup circuit for power supply |
Jun. 10, 2008 |
| 7365497 |
Discharge lamp ignition device and projector |
Apr. 29, 2008 |
| 7341051 |
Electronic high frequency plasma catalyzer |
Mar. 11, 2008 |
| 7271545 |
Ballast and igniter for a lamp having larger storage capacitor than charge pump capacitor |
Sep. 18, 2007 |
| 7215523 |
Apparatus for protecting an integrated circuit and method thereof |
May. 8, 2007 |
| 7196480 |
Method of soft-starting a switching power supply containing phase-control clipping circuit |
Mar. 27, 2007 |
| 7166969 |
Drive circuit for illumination unit |
Jan. 23, 2007 |
| 7141941 |
Staggering switching signals for multiple cold cathode fluorescent lamp backlighting system to reduce electromagnetic interference |
Nov. 28, 2006 |
| 7141935 |
Inverter circuit for surface light source system |
Nov. 28, 2006 |
| 7116062 |
Method of soft-starting a switching power supply including pulse width modulation circuit |
Oct. 3, 2006 |
| 7095181 |
Method and apparatus for controllably generating sparks in an ignition system or the like |
Aug. 22, 2006 |
| 7095182 |
Ignition control apparatus for internal combustion engine |
Aug. 22, 2006 |
| 7075247 |
Controller and driver architecture for double-ended circuitry for powering cold cathode fluorescent lamps |
Jul. 11, 2006 |
| 7053562 |
Lamp containing soft-start power supply |
May. 30, 2006 |
| 7049758 |
Method of soft-starting a switching power supply having time-based pulse triggering control |
May. 23, 2006 |
| 6989637 |
Method and apparatus for a voltage controlled start-up circuit for an electronic ballast |
Jan. 24, 2006 |
| 6941869 |
Sensor for monitoring electronic detonation circuits |
Sep. 13, 2005 |
| 6848437 |
Ignition device for an internal combustion engine |
Feb. 1, 2005 |
| 6756744 |
Method of initiating lighting of a discharge lamp, circuit for lighting a discharge lamp, light source device using the circuit, and optical instrument incorporating the light source device |
Jun. 29, 2004 |
| 6539929 |
Ignition device for an internal combustion engine |
Apr. 1, 2003 |
| 6389050 |
High-speed CMOS driver for vertical-cavity surface-emitting lasers |
May. 14, 2002 |
| 6339296 |
Low profile emergency ballast |
Jan. 15, 2002 |
| 6333604 |
Integrated ignition circuit and method |
Dec. 25, 2001 |
| 6257216 |
Device for suppressing undesired ignitions in a spark ignition engine |
Jul. 10, 2001 |
| 6188180 |
Ignition circuit for automotive high intensity discharge lamps |
Feb. 13, 2001 |
| 6167876 |
Circuit arrangement for an ignition stage, in particular for the ignition circuit of a motor vehicle |
Jan. 2, 2001 |
| 6107748 |
Circuit arrangement of a final ignition stage |
Aug. 22, 2000 |
| 6081074 |
Method and apparatus for offsetting power draw in a multiple channel system |
Jun. 27, 2000 |
| 6049176 |
Ignition device for an internal combustion engine |
Apr. 11, 2000 |
| 5970964 |
Circuit device for igniting internal combustion engine and semiconductor device for igniting internal combustion engine |
Oct. 26, 1999 |
| 5886476 |
Method and apparatus for producing electrical discharges |
Mar. 23, 1999 |
| 5875749 |
A.C. ignition system for an engine |
Mar. 2, 1999 |
| 5852381 |
Turbine engine ignition exciter circuit including low voltage lockout control |
Dec. 22, 1998 |
| 5690085 |
Control circuit for ignition coil |
Nov. 25, 1997 |
| 5675220 |
Power supply for vehicular neon light |
Oct. 7, 1997 |
| 5621278 |
Ignition apparatus |
Apr. 15, 1997 |
| 5616992 |
Electronic starter circuit for fluorescent lamp |
Apr. 1, 1997 |
| 5592118 |
Ignition exciter circuit with thyristors having high di/dt and high voltage blockage |
Jan. 7, 1997 |
| 5587630 |
Continuous plasma ignition system |
Dec. 24, 1996 |
| 5569982 |
Clamping circuit for IGBT in spark plug ignition system |
Oct. 29, 1996 |
| 5561350 |
Ignition System for a turbine engine |
Oct. 1, 1996 |
| 5517087 |
Fluorescent lamp ignition circuit |
May. 14, 1996 |
| 5506478 |
AC ignition system with optimized electronic circuit |
Apr. 9, 1996 |
| 5502338 |
Power transistor device having collector voltage clamped to stable level over wide temperature range |
Mar. 26, 1996 |
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