Stanislaw Flatto writes:

A 'toy' that we enjoyed for few years disintegrated and we would like to
replace it.
It was a table lamp, but the bulb included a cicuitry sensing the timing
of power switch on-off operations and a dimmer.
When the switch was operated the bulb would produce full brightness, if
the switch was thrown on-off-on within ~ 1-1.5 seconds the bulb would
enter the dimmed condition.
When the bulb failed we thought that it means just buying a replacement.
No chance!!!
So who has some info on this kind of bulb, like who is the producer and
so on.

A company (Philips maybe?) used to sell these types of bulbs. They have
the circuitry built into the base - it's a button in series with the AC.
The ones I recall had 3 or 4 levels of brightness based on repeated
switch on/off cycles as you describe.

I haven't seen them in years.

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