Quote:
Originally Posted by The Philpott
I previously bagged 3 Thorn SRS fittings from a skip, only ended up keeping 1 since one buzzed loudly and one had a dead short inside. (I thought SRS stood for Semi-Resonant Start, Nick, but i could be wrong) The fact they thought it necessary to provide a fuse inside has always worried me a little- were they worried about the luminaire running away and melting down..?
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You are quite correct, SRS does indeed stand for Semi- Resonant Start not series resonant start as I mistakenly stated
Apparently, it was developed by Thorn and had several advantages over conventional switch start. It was gentle on the cathodes so lamp life was good, lamps would start well in the cold and it had a naturally good power factor without additional capacitors.
Cheers
Nick