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5
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2answers
1k views

Serial capacitors in electronic ballast of a fluorescent lamp

Recently I repaired one broken electronic ballast of a linear 30W fluorescent lamp. Now it seems to be working as expected, but I had to make some changes to it and I'd like to ask if you see any ...
11
votes
2answers
2k views

Electronic Drivers for Fluorescent Lamps: How is the DC-to-AC Conversion done?

Pretty much all (somewhat inaccurately named) electronic ballasts for fluorescent lamps run off a DC voltage and have to convert it into AC to operate the lamp. The DC supply can come from rectified ...
5
votes
3answers
789 views

How do you dim a streetlight bulb?

I'm getting a streetlight, most likely with a HPS bulb (high-pressure sodium). I'll probably hook up some sort of sensor to turn it on only when someone is actually parking lot. Why do some ...