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3.30AM Mentality

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Avalanche
Tue Aug 22 2006, 02:59AM Print
Avalanche Registered Member #103 Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
I think I found the reason why energy saving light bulbs are not supposed to be used with dimmer switches. However, it is a very easy way to produce a nice strobe light!

In the UK, a lot of people I know are moving towards towards energy saving light bulbs, probably due to the recent energy review. This includes our household, and my bedroom which happens to be equipped with a dimmer switch. Obviously you're not supposed to use a dimmer with energy savers, so up to now I have been turning it up to full power as quickly as possible. But tonight, after nearly a whole bottle of the finest Scotch whisky I could afford, I was feeling adventurous.

The result was a nice strobe effect and a slightly damaged bulb mistrust I guess I should go to bed.

video (obviously the 15FPS doesn't help...)

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EDY19
Tue Aug 22 2006, 03:15AM
EDY19 Registered Member #105 Joined: Thu Feb 09 2006, 08:54PM
Location:
Posts: 408
Is that one of the coiled up fluorescent bulbs? Now just firgure out a way to audio modulate it tongue
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Avalanche
Tue Aug 22 2006, 03:25AM
Avalanche Registered Member #103 Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
I'm not sure what sort it is, it just looks like a normal bulb but fluorescent cheesey

I suppose if the tube or whatever can pulse like that without dying, it would make quite an entertaining thing with the right driver circuitary, timed to the beat cheesey Another idea for a future project...
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thom
Wed Aug 23 2006, 09:00PM
thom Registered Member #239 Joined: Thu Feb 23 2006, 03:15AM
Location: canada
Posts: 23
If it dies pop it open, theres some nice parts inside.

As long as they arent completely melted (usually just the resistors).
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Marko
Wed Aug 23 2006, 09:12PM
Marko Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Osram bulbs have two ultra-fast high voltage mosfets inside, usually IRFU410 or D2N62's depending on power. Old bulbs had BUT11A's..

One could have tried paralelling bunch these (nice tempco and high on resistance)

There is also a 400V lytic cap, few diodes, resistors, small caps, ferrite transformer and a diac.

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