General > General Technical Chat
The Dubai Lamp
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Marco:

--- Quote from: amyk on April 19, 2022, 12:37:52 am ---That is very odd. Why would Philips decide to design and use a more complex driver circuit, which has the same ~0.5PF as the cap dropper/post-regulator in the original Dubai Lamp, instead of simply giving the original one even better LED filaments --- or just selling that one as-is?

--- End quote ---
The combination of low flicker, small capacitor and high efficiency might not have been possible without a buck regulator.

A resistive regulator will have to burn the ripple on the capacitor.
james_s:
The lack of flicker is a huge issue for me, I'm very sensitive to flicker. I typically buy a sample lamp to play with before I buy more of them to put into use and I reject lamps that have line frequency flicker.
cdev:
Me too.. I can see the flicker.. A lot, and it bugs me. I can tell lamps apart by flicker level.
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