LandOfFree - US Patents - Listing for Electric lamp and discharge devices: systems,Periodic switch in the supply circuit,Periodic switch cut-out

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Detection and protection circuit for fluorescent lamps operating

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Device for accurately detecting end of usage lifetime of a disch

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Device for protecting a ballast circuit from excess voltage

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Dimmer having a power supply monitoring circuit

Reissue Patent

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Dimmer having a power supply monitoring circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Discharge lamp circuit which limits ignition voltage across a se

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electric discharge machining power source unit for electric disc

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electronic ballast circuit for fluorescent lamps

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electronic ballast having a stable reference voltage and a...

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electronic ballast with inverter protection and relamping circui

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electronic Ballast with inverter protection circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electronic ballast with inverter protection circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electronic ballast with over-voltage protection

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Electronic fluorescent lamp ballasting system

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

End of lamp life or false lamp detection circuit for an electron

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

EOL detection with integrated filament interrogation

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Floating IC driven dimming ballast

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Florescent lamp ballast control for zero -voltage switching oper

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Flourescent lamp circuit employing a reset transistor coupled to