General > General Technical Chat
UK to attempt to ban the sale of halogen bulbs.
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Monkeh:

--- Quote from: coppice on June 10, 2021, 08:56:13 pm ---
--- Quote from: Monkeh on June 10, 2021, 08:53:57 pm ---The usual suspects sell specific versions for ovens - the gist of it seems to be a slightly different gas mix to improve life at the higher temperatures. I'm getting a couple years out of generic ones at a fifth the price, so they seem unworthy.

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Lamps in modern ovens seem to fail quite quickly, even when you use the right bulbs. They used to last 10 years or more. I think they are moving the bulbs further into the oven and cooking them more. Even so, most ovens are still poorly lit.

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It's not just ovens. I replaced some of the original, Japanese made lamps on a Honda after more than 10 years and 80k miles, and I was replacing the replacements every nine months after that. Can't just sell things once any more.
andy2000:

--- Quote from: Monkeh on June 10, 2021, 09:00:30 pm ---It's not just ovens. I replaced some of the original, Japanese made lamps on a Honda after more than 10 years and 80k miles, and I was replacing the replacements every nine months after that. Can't just sell things once any more.

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Watch out for car bulbs that advertise improved brightness, or whiteness.  They run the filaments hotter which significantly reduces life. 
rdl:
I've never had an aftermarket replacement for any car/truck part last anywhere near as long as the original.
NiHaoMike:

--- Quote from: coppice on June 10, 2021, 08:56:13 pm ---Lamps in modern ovens seem to fail quite quickly, even when you use the right bulbs. They used to last 10 years or more. I think they are moving the bulbs further into the oven and cooking them more. Even so, most ovens are still poorly lit.

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Add a diode in series with the bulb and use a higher wattage bulb to compensate.
SilverSolder:

--- Quote from: james_s on June 10, 2021, 05:31:43 pm ---I'm pretty sure that was a joke, flicker is obviously not desirable. I've found that trailing-edge dimmers work well to dim a lot of otherwise finicky LED bulbs.

Yes if you dim an incandescent lamp it can last many, many thousands of hours. As has been discussed before though, you pay for that extended life in energy costs. When an incandescent lamp is dimmed down to maybe 5% of full lumens it will still consume something like 50% of rated power. With LED the opposite is true, dim it down and it produces more lumens per watt.

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Dimmed LED doesn't have the same attractive color temperature as incandescent, though.

I didn't know they still consumed 50% of "bright" power when dimmed...  seems a lot?
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