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Default CFL on steroids any risk?

The Dubai Lamp range is comprised of four LED bulbs, each of which is available in €ścool daylight€ť and €śwarm white€ť colors. Theres a 1-W, 200-lm E14 candle bulb, 400-lm E27 classic bulb and a 600-lm E27 classic bulb. Philips says it designed the filament LED bulbs to replace 25-W, 40-W, and 60-W incandescent bulbs, respectively. The bulbs run off Dubais 220-240-V mains voltage.

The above article is from very nearly two years ago. 150 - 175 l/W lamps are common in the commercial market, and readily available in to consumers with a just a bit of effort. A bit more costly, perhaps - but if one is in a region where the Utility is subsidizing prices, you may not notice.

That Home Depot or whatever passes for a Big-Box store at whatever location will not be selling either the latest, nor certainly not cutting-edge technology. They WILL be selling whatever may be mass-produced at the lowest cost with the highest margins.

Most of the discussions here are based on assumptions that are - at least - three years out of date.

Suffice it to understand:

LED Lamp drivers get HOT. These are drivers, not ballasts.
The amount of heat generated is in direct proportion to the amount of light generated as function of emitting surface. Linear emitters


spread the emitter heat out, and allow (relatively) tiny drivers making not-much heat. Most of these lamps are also "universal" inasmuch as they may be run in any position. And, their lumens-per-watt is not massive, either.

Point-source emitters such as the CREE XHP35 will make up to 706 lumens at 350 ma. - which translates to 183 lumens per watt. Really. And that was introduced in 2018, and is commonly found in your MagLite, if you want a "real world" application. It runs at 150C at the junction - which is tiny, so that heat is easily managed. And as it is a direct DC device, there is no separate driver in a flashlight application. In a lamp application, that driver gets quite complex as that same emitter may run anywhere from 5500K with a CRI of 50 to 2700K with a CRI of 90.

The technology is still evolving. And it is NOT where it was even a year ago.

Tabby, for the record, you give us all a deeper understanding of the term "invincible ignorance". Thank you for that!

Peter Wieck
Melrose Park, PA