A ballast for a fluorescent lamp has two primary functions: Provide high initial voltage to start the lamp; and regulate lamp current during operation. Common electronic ballasts convert 60-Hz line ...

In part 1 we discussed rectifying the ballast AC current to DC and we showed an open load protection circuit. Direct replacement of fluorescent tubes with LED assemblies can lead to uneven lighting.

Electronic ballasts for fluorescent lighting deliver high efficiency and long lamp lifetimes. A new and simplified control circuit demonstrates complete control of the ballast, including all necessary ...

An electronic ballast, in simplistic terms, takes a mains supply and transforms the energy to a storage capacitor, which in turn powers a half bridge to provide frequency-controlled power for a ...