LandOfFree - US Patents - Listing for Electric lamp and discharge devices: systems

Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Flashers

Lamp ballast configuration

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

Lamp ballast control circuit and method

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

Lamp ballast drive circuit having a resistor in place of boot st

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

Lamp ballast for accurate control of lamp intensity

Electric lamp and discharge devices: systems – Current and/or voltage regulation

Lamp ballast for circuit driving multiple parallel lamps

Electric lamp and discharge devices: systems – Current and/or voltage regulation

Lamp ballast for circuit driving multiple parallel lamps

Electric lamp and discharge devices: systems – Condenser in the supply circuit – Inductance in the condenser circuit

Lamp ballast for reducing interference current

Electric lamp and discharge devices: systems – Surge generator or inductance in the supply circuit – Circuit interrupter in the inductance circuit

Lamp ballast system

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

Lamp ballast system

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – With power factor control device

Lamp ballast system characterized by a power factor correction o

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

Lamp ballast system having improved power factor and...

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation

Lamp ballast with frequency modulated lamp frequency

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

Lamp ballast with lamp rectification detection circuitry

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

Lamp ballast with near unity power factor and low harmonic conte

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit

Lamp ballast with near unity power factor and low harmonic conte

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation

Lamp ballast with SEPIC converter

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

Lamp ballast with triggerless starting circuit

Electric lamp and discharge devices: systems – Plural load device systems – Plural discharge device loads

Lamp ballasts

Electric lamp and discharge devices: systems – With radiant energy sensitive control means

Lamp brightness control circuit with ambient light compensation