| |
 |
|
Class Information
Number: 315/219
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit > Periodic switch in the primary circuit of the supply transformer
Description: Systems provided with a transformer connected between the source of supply and the load device for supplying electric current or potential to the load device and having the periodic switch connected in the primary circuit of the transformer so as to periodically interrupt the primary circuit.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6919692 |
Control device of gas-discharge light source |
Jul. 19, 2005 |
| 6919693 |
High-voltage transformer and discharge lamp driving apparatus |
Jul. 19, 2005 |
| 6914394 |
Supply circuit, in particular for a discharge lamp |
Jul. 5, 2005 |
| 6900593 |
Light source and image reading device using the same |
May. 31, 2005 |
| 6900600 |
Method for starting a discharge lamp using high energy initial pulse |
May. 31, 2005 |
| 6894438 |
Lighting system and method incorporating pulsed mode drive for enhanced afterglow |
May. 17, 2005 |
| 6888323 |
Light management system device and method |
May. 3, 2005 |
| 6879114 |
Fluorescent lamp driver circuit |
Apr. 12, 2005 |
| 6876157 |
Lamp inverter with pre-regulator |
Apr. 5, 2005 |
| 6856100 |
Ballast with inverter startup circuit |
Feb. 15, 2005 |
| 6853152 |
Electric power supply safety interlock system |
Feb. 8, 2005 |
| 6850016 |
Rare gas discharge lamp lighting apparatus |
Feb. 1, 2005 |
| 6836077 |
Electronic elimination of striations in linear lamps |
Dec. 28, 2004 |
| 6831426 |
Electronic device, or dimmer, for regulating the power supply applied to a load |
Dec. 14, 2004 |
| 6822400 |
Processor controlled strobe |
Nov. 23, 2004 |
| 6819058 |
Discharge-lamp lighting circuit |
Nov. 16, 2004 |
| 6791286 |
Hid lamp operating circuit |
Sep. 14, 2004 |
| 6788008 |
Device for operating a dielectric barrier discharge lamp |
Sep. 7, 2004 |
| 6788006 |
Discharge lamp ballast with dimming |
Sep. 7, 2004 |
| 6788005 |
Inverter and lamp ignition system using the same |
Sep. 7, 2004 |
| 6784622 |
Single switch electronic dimming ballast |
Aug. 31, 2004 |
| 6774579 |
Electric discharge lamp and electric discharge lamp drive apparatus |
Aug. 10, 2004 |
| 6768275 |
Discharge lamp lighting circuit |
Jul. 27, 2004 |
| RE38547 |
Frequency-modulated converter with a series-parallel resonance |
Jul. 6, 2004 |
| 6753660 |
Method and arrangement with control gear, and control gear |
Jun. 22, 2004 |
| 6744224 |
Rush current limiting circuit for a PFM control charge pump |
Jun. 1, 2004 |
| 6741040 |
Operating device for lamps with a regulated SEPIC converter |
May. 25, 2004 |
| 6724154 |
Cold cathode lamp and lamp control circuit |
Apr. 20, 2004 |
| 6703793 |
Switching power unit |
Mar. 9, 2004 |
| 6686702 |
Transformerless xenon power supply |
Feb. 3, 2004 |
| 6686704 |
Lamp lighting apparatus and projector using the same |
Feb. 3, 2004 |
| 6674252 |
Non-blinking direct current fluorescent lamp circuit |
Jan. 6, 2004 |
| 6667587 |
Flickering mode control system for a high intensity discharge lamp |
Dec. 23, 2003 |
| 6667583 |
Method and apparatus for efficiently driving a low-voltage device from a wide-range input supply |
Dec. 23, 2003 |
| 6659622 |
Illumination system and illumination unit |
Dec. 9, 2003 |
| 6661182 |
Lamp ballast system having improved power factor and end-of-lamp-life protection circuit |
Dec. 9, 2003 |
| 6639366 |
Power supply circuit for a cold-cathode fluorescent lamp |
Oct. 28, 2003 |
| 6624401 |
Magnetron drive power supply |
Sep. 23, 2003 |
| 6624594 |
Discharge lamp lighting circuit |
Sep. 23, 2003 |
| 6621237 |
Gas-discharge lamp lighting apparatus with optimized circuit configuration |
Sep. 16, 2003 |
| 6608450 |
High frequency, high efficiency electronic lighting system with sodium lamp |
Aug. 19, 2003 |
| 6605908 |
Stopper protection circuit of electronic ballast for fluorescent lamp |
Aug. 12, 2003 |
| 6583586 |
Brightness- regulating voltage-transforming circuit for high-pressure discharge lamp |
Jun. 24, 2003 |
| 6577077 |
Circuit arrangement |
Jun. 10, 2003 |
| 6563274 |
Light-emitting element drive circuit |
May. 13, 2003 |
| 6555970 |
Ballast for gas discharge lamps with shutdown of the filament heating |
Apr. 29, 2003 |
| 6555973 |
Arrangement in connection with discharge lamp |
Apr. 29, 2003 |
| 6548964 |
Discharge lamp lighting apparatus and luminaire using the same |
Apr. 15, 2003 |
| 6545431 |
Dimmable electronic ballast |
Apr. 8, 2003 |
| 6522082 |
Electronic ballast for discharge lamp comprising dielectrically impeded discharges |
Feb. 18, 2003 |
|
|
|
