[Shop-talk] LED circline lamp wiring

Donald H Locker dhlocker at comcast.net
Thu Mar 4 17:38:12 MST 2021


Hello all shop-talk gurus.

It sure looks to me like the line and neutral wires should go to the
innermost pair of pins on the circline replacement lamp (this is an old
fluorescent magnifying fixture on which the switch died so I decided to
replace switch and use LED -- just because.)

Anyway, here is an ascii-art sketch of the tube connector block

[center of tube circle is up here]


(            )
 \   L   N  /
   | x   x |
   |       |
   | x   x |
    [s] [s]

On the original, the starter switch shorted the two pins marked [s] to
preheat the electrodes and the L and N pins went to the Line and Neutral
(Line was switched; Neutral was permanently attached to the cord.)

The [s] and [s] terminals were on the "outside" of the tube (furthest
from the center) and the L and N pins were closer to the center.

Have I correctly interpreted all this? Anyone know? All my web searches
don't give me any definitive connection diagrams. (The new tube is made
by Feit and is supposed to not use a ballast.)

Thanks in advance, for anything!
Donald.
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