Ballast circuit for operating a gas discharge lamp

Ballast circuit with synchronization and preheat functions

Ballast control IC with minimal internal and external...

Ballast control IC with minimal internal and external...

Ballast for a discharge lamp

Ballast for a discharge lamp with false deactivation detection

Ballast for a gas discharge lamp and a method of controlling...

Ballast for at least one gas discharge lamp and method for...

Ballast for high pressure sodium lamps having constant line and

Ballast for operating electric lamps

Ballast having multiple circuit failure protection and...

Ballast modifying device and lead-type ballast for programming a

Ballast stabilization circuitry for eliminating moding or oscill

Ballast with adaptive end-of-lamp-life protection

Ballast with arc protection circuit

Bi-direction constant current device

Bi-directional light emitting diode drive circuit in pulsed...

Bi-directional light emitting diode drive circuit in...

Bi-directional light emitting diode drive circuit in...

Bi-level output electronic high intensity discharge (HID)...