Don Klipstein wrote:
In ,
harry wrote:

On Apr 25, 2:10=EF=BF=BDam, The Daring Dufas
wrote:
wrote:

Try an NE2 bulb? That's what used to be in the old starters.
ERRRRRRR! Wrong! I would suggest you find an old florescent starter
and take it apart, carefully break the glass off the silvered bulb
and you will find a heat activated bi-metal switch. A little searching
of The Interweb will help you learn how it works.

TDD- Hide quoted text -

- Show quoted text -
The bimetal strip starters have four pins.Two for the resistor & two
for the bi-metal strip/switch contacts. They haven't been made for
years.

Glow switch starters have bimetal strips inside their bulbs.


I've seen some energy saver 4 and 8 foot tubes that had bi-metal
switches on the filament leads inside the lamp itself. Once the
lamp warmed up from operating, the filaments were disconnected.
I picked up the broken end of one by a dumpster and when I saw
it, I knew what it was and thought how neat that is. I don't
remember the name of the manufacturer but I could Google it.

TDD