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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:

Class Number Class Name Patents
315/209CD Capacitor dischargeneous ignition systems 170
315/224 Impedance or current regulator in the supply circuit 1,600
315/218 Magnetoelectric generator supply 27
315/209M Miscellaneous ignition systems 39
315/225 Periodic switch cut-out 322
315/219 Periodic switch in the primary circuit of the supply transformer 630
315/209PZ Piezoelectric ignition systems 62
315/210 Plural load device systems 70
315/226 Plural periodic switches or multiple contact periodic switch 214
315/209SC Silicon controlled rectifier ignition 100
315/209T Transistorized ignition systems 191


Patents under this class:

Patent Number Title Of Patent Date Issued
7619371 Inverter for driving backlight devices in a large LCD panel Nov. 17, 2009
7619368 Power source apparatus Nov. 17, 2009
7619365 Load control device having a variable drive circuit Nov. 17, 2009
7615941 Apparatus and method for maximizing the longevity of arc tube bulbs during pulsing operation Nov. 10, 2009
7615937 High-pressure discharge lamp lighting device and lighting fixture Nov. 10, 2009
7615933 Pulsed dielectric barrier discharge Nov. 10, 2009
7609237 Circuit apparatus with LED diodes Oct. 27, 2009
7609006 LED light string with split bridge rectifier and thermistor fuse Oct. 27, 2009
7609005 Circuitry for portable lighting devices and portable rechargeable electronic devices Oct. 27, 2009
7605544 Current balancing circuit Oct. 20, 2009
7598682 Current regulator apparatus and methods Oct. 6, 2009
7598677 Multiple failure detection shutdown protection circuit for an electronic ballast Oct. 6, 2009
7595596 Power-saving control circuit and method for OLED panel Sep. 29, 2009
7592753 Inductively-powered gas discharge lamp circuit Sep. 22, 2009
7589475 Electric lamp with enhanced dependability Sep. 15, 2009
7586270 Circuit and method for the operation of miniature high pressure short-arc lamps using alternating current Sep. 8, 2009
7586266 Driver circuit for an HID lamp and method for operating an HID lamp Sep. 8, 2009
7586265 Illumination device Sep. 8, 2009
7579790 Multiple gas discharge lamp interleave trigger circuit Aug. 25, 2009
7579784 Switching power supply and its control circuit, and electronic apparatus employing such switching power supply Aug. 25, 2009
7573207 Driver system and method with multi-function protection for cold-cathode fluorescent lamp and external-electrode fluorescent lamp Aug. 11, 2009
7569998 Striking and open lamp regulation for CCFL controller Aug. 4, 2009
7564197 Discharge tube operation device Jul. 21, 2009
7564196 Power supply device, and LED device and electronic device using same Jul. 21, 2009
7564195 Circuit of the electronic ballast with the capability of automatic restart Jul. 21, 2009
7564194 Method for detecting lamp current and lamp driving circuit using the method for detecting the lamp current Jul. 21, 2009
7564192 HID dimming method and apparatus Jul. 21, 2009
7564191 Inverter having single switching device Jul. 21, 2009
7560874 Electronic ballast with improved inverter startup circuit Jul. 14, 2009
7560871 Ballast with socket-to-fixture voltage limiting Jul. 14, 2009
7560867 Starter for a gas discharge light source Jul. 14, 2009
7558081 Basic halogen convertor IC Jul. 7, 2009
7557523 Discharge lamp lighting device, and lighting equipment and lighting system using the device Jul. 7, 2009
7557517 Primary side current balancing scheme for multiple CCF lamp operation Jul. 7, 2009
7557515 Simplified ballast control circuit Jul. 7, 2009
7554273 Protection for external electrode fluorescent lamp system Jun. 30, 2009
7554272 Low noise electroluminescent lamp (EL) driver and method therefor Jun. 30, 2009
7554271 Single stage PFC and power converter circuit Jun. 30, 2009
7550934 LED driver with fast open circuit protection, short circuit compensation, and rapid brightness control response Jun. 23, 2009
7550932 Control method and device for a power-converting module that drives a light-emitting component Jun. 23, 2009
7550930 Method and device for lighting an electronic or electromechanical apparatus Jun. 23, 2009
7548028 Current-mode resonant inverter circuit Jun. 16, 2009
7545369 Methods and apparatus to improve efficiency in cold cathode fluorescent light controllers Jun. 9, 2009
7545105 Driving circuit for piezoelectric lamps Jun. 9, 2009
7541753 Starter for low-pressure discharge lamps Jun. 2, 2009
7541749 Current-mode resonant inverter circuit for discharge lamp Jun. 2, 2009
7541744 Electronic ballast for a high-pressure discharge lamp having a current-measuring device Jun. 2, 2009
7531966 Lamp ballast circuit May. 12, 2009
7531965 Discharge centering lamp lighting device May. 12, 2009
7528558 Ballast with ignition voltage control May. 5, 2009



 
 
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