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Osram circolux el 24W and 28W

Osram circolux el 24W and 28W

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These are two Osram CIRCOLUX el at 24 watts and 28 watts to be equivalent to 150 Watt incandescent lamp.

They seems to have various drives. since they lights different,
24W Instant On.
28W shines a little blue at the endrna before lights up.

IMG_0440.JPG IMG_0431.JPG IMG_0450.JPG IMG_0451.JPG

Light Information

Light Information

Manufacturer:Osram
Lamp
Base:E27
Optical
Lumen Efficacy:Good!
Physical/Production
Factory Location:Italy

File information

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Filename:IMG_0450.JPG
Album name:bigge / My Light Bulbs
Keywords:Lamps
File Size:343 KB
Date added:Jul 27, 2011
Dimensions:2048 x 1529 pixels
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Al_M
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GEC Z9464 90w SOX/LPS


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Jul 27, 2011 at 04:41 PM Author: Al_M
I used to have a Radium-branded version like the one on the right but it was 32w. Looked the same physical size as the 28w in your pic though. It was colour 827/41 2700K.

Traffic signals & street lighting engineer. Please bring SOX/LPS back Downunder!!

arcblue
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Jul 27, 2011 at 10:54 PM Author: arcblue
They look like steering wheels for older cars...

I'm lampin...

dor123
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Other loves are computers, office equipment, A/Cs


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Jul 28, 2011 at 03:49 AM Author: dor123
bigge: The newer 24W Circolux lamp uses instant start ballast. The older 28W Circolux lamp uses probably an electronic ballast with electrodes preheating. However any blue light at the ends of the tube during the ignition, usually means that the lamp operates on cold cathodes in this period of ignition, especially if the lamp already lights during this period.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

Medved
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Jul 28, 2011 at 04:30 AM Author: Medved
I have 18W version of the older style (based on the FC6T9), inside is simple instant start ballast of standard, ring core controlled, bipolar transistor power oscillator concept. These were designed by Wotan, when it existed separatelly...

The 24W newer version (based on the 22W T5 circular lamp) have thermally (using PTC) controlled programmed start of these days standard OSRAM Quicktronic design (FET power oscillator with feedback from auxiliary windings on the ballasting inductor and coupled LC tanks in the gate circuits), so if yours start instantly, the PTC is likely faulty (open - their material tend to physically break apart)

I personally like the older, mainly because of the tube: I'm not fan of thin, high intensity tubes, they generate too harsh, glary light with sharp shadows. And when you add a difractor, the overall efficacy drop below the one of thick tube, while the thin tube need time to warm up...

No more selfballasted c***

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Jul 31, 2011 at 12:29 PM Author: bigge
Ok, thanks for all the answers.




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Aug 15, 2011 at 03:50 AM Author:
Wotan also made the 25w fatter tube version but the one I have was before HF electronice ballasts were common. It flickers 50Hz but isn't magnetic but voltage doubler so there's no preheat and pretty hard on the electrodes.
Medved
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Aug 15, 2011 at 02:27 PM Author: Medved
@imj: Maybe those were predecessors. Then it would be nice to find some - for the collection to be complete...
But capacitor/multiplier ballast is still quite popular - I haven't seen anything else in the F8T5 worklight sticks sold here...

No more selfballasted c***

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