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Old 9th Oct 2017, 9:52 pm   #10
philthespark
Pentode
 
Join Date: Oct 2017
Location: Newton-le-Willows, Merseyside, UK.
Posts: 158
Default Re: Strange phenomenon involving CFL bulb

It is indeed the capacitor in the lamp acting as a snubber and cleaning the local mains supply. We sometimes have to fit a small capacitor to led fittings to prevent glow caused by leakage from other equipment.
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