Ballast for high-pressure gas discharge lamp

Ballast for light emitting diode light sources

Ballast for one or more fluorescent lamps including threshold se

Ballast for operating electric lamps

Ballast having a lamp end of life circuit

Ballast having multiple circuit failure protection and...

Ballast instant start circuit

Ballast modifying device and lead-type ballast for programming a

Ballast power control circuit

Ballast power supply

Ballast protecting device

Ballast stabilization circuitry for eliminating moding or oscill

Ballast system for a fluorescent lamp

Ballast with adaptive end-of-lamp-life protection

Ballast with arc protection circuit

Ballast with arc protection circuit

Ballast with fast-responding lamp-out detection circuit

Ballast with frequency-diagnostic lamp fault protection circuit

Ballast with lamp sensor and method therefor

Ballast with lamp-to-earth-ground fault protection circuit