Designers use ballast ICs, such as International Rectifier’s IR53HD420, in CFLs (compact fluorescent lamps) for heating the filaments, igniting the lamps, and supplying the lamps with current ...
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.
Unplug the fixture or turn off the power at the main panel. Remove the diffuser (cover), then carefully remove the fluorescent bulbs or tubes. Remove the fluorescent ballast compartment cover to ...
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