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

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition

Dimmer protection

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit

Dimming ballast resonant feedback circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...

Dimming circuit for a fluorescent lamp

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...

Dimming circuit for an electronic ballast

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...

Dimming circuit for powering gas discharge lamps

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit

Dimming circuit having switching transistor protection means

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Plural load device systems

Dimming circuit with saturated semiconductor device

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit

Dimming control circuit having feedback frequency control

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition

Dimming control system for electronic ballasts

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition

Dimming controller for a fluorescent lamp

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition

Diode feedback monostable multivibrator in a transistor ignition

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit

Direct drive CCFL circuit with controlled start-up mode

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit

Discharge lamp ballast circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...

Discharge lamp ballast device and lighting appliance

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...

Discharge lamp ballast operating on induced voltage in the prima

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...

Discharge lamp ballast with dimming

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition

Discharge lamp circuit for ignition time control and...

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 – Impedance or current regulator in the supply circuit

Discharge lamp DC ballast employing only passive components