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416 points stacktrust | 1 comments | 12 Oct 23 16:31 UTC | HN request time: 0.239s | source

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semiquaver ◴[12 Oct 23 19:53 UTC] No.37862310[source]▶

  > I want a variant that works like this: If the power is quickly turned off and on again, the outlet switches from powered to unpowered (or vice-versa).

Philips has a line of bulbs called SceneSwitch that use this rapid on-off mechanism to change their brightness and color temperature to one of three levels. It’s funny because incandescent three-way bulbs and switches used to be very common. Now that everything is LED you need a complicated timer system to achieve the same result. I’m just happy to be able to dim my table lamps without a bunch of extra technology.

replies(1): >>37862379 #

dragonwriter ◴[12 Oct 23 19:59 UTC] No.37862379[source]▶

>>37862310 #

> It’s funny because incandescent three-way bulbs and switches used to be very common. Now that everything is LED you need a complicated timer system to achieve the same result.

Or just a dimmable LED bulb in an existing 3-way fixture.

replies(2): >>37866163 #>>37869747 #

1. semiquaver ◴[13 Oct 23 12:16 UTC] No.37869747[source]▶

>>37862379 #

Dimmable bulbs and 3-way lamps are not compatible: https://en.m.wikipedia.org/wiki/3-way_lamp. The electrical principles are not the same —- a three way bulb has a different socket contact configuration to accept different wattages at each of the three levels. Supposedly LED 3 way bulbs exist but I’ve never seen one in the wild.

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