Larry I do not understand.

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It's definitely not a "dimmer" in the triac-type sense of the word.

It is certainly a dimmer, it is just not a solid state dimmer.

I would say the device in the picture has been called a 'dimmer' longer than solid state dimmers have been around.

IMO that is a 'dimmer' and a solid state device is more of a 'pulser'. [Linked Image]

Bob

Bob Badger
Construction & Maintenance Electrician
Massachusetts