In alt.home.repair, on Mon, 7 Dec 2020 15:46:08 -0600, Dean Hoffman
wrote:
On 12/7/20 2:16 PM, james wrote:
I need to buy one BA15D to replace a burned out Halogen 120V 75W garage
stair light that is attached to the side wall.
It doesn't need to be brightly lit as it's a short set of open steps and
it's not on a dimmer so I don't care about the wattage all that much.
But I was told by someone dimmable LEDs are more robust than non dimmable
LEDs.
All LEDs are long lasting. Decades, I think**. I wouldn't base my
choice on that. If you have no dimmer, you can use any one of the 3
below except are you sure your socket is bayonet style, and that there
are two contacts in the bottom of the socket? Like sewing machines
use? All 3 of them are recommended for sewing machines, that have
bayonet, insert and twist, mounts.
**Most of mine are on only a fraction of the time. Do they ever wear
out? "Unless an actual component in the LED fails, they will provide
light “forever.” While LEDs do not burn out like fluorescent lamps and
other bulbs they will, however, degrade and dim over time. The diode
itself will begin to emit less and less light as the years pass. Still,
LED lamps can last over 25,000 hours."
That's 3 years 24 hours a day. And if it dims, you said you don't need
much light.
Amazon has three kinds of 12V BA15D LEDs with respect to dimmability
None of these are listed as 12V. But if they were they wouldn't owk in
your fixture.
Also note that all are different wattages, so they are different bulbs
and maybe different in dimmabiliity.
You know you can ask questions on the Amazon Q&A section. You can ask if
it's really dimmable.
[1] some don't say if they are dimmable
https://www.amazon.com/BA15D-Bayonet.../dp/B07GKCC76Q
For this one, the first review said it was 12V but was mislabeled, and
that it blew up when he tried it in a sewing machine, that it was meant
for a car. But in the ad, it's still labeled as 110V and it's rated 4.4
out of 5. I didn't take the time to read other reviews, but I have once
seen a review that was about a totally different product than what it
referred to. Maybe there is a mistake somewhere, or they sent him the
wrong thing (Heck, I bought a refurb computer online and they sent me
the wrong model.
[2] some say they're not dimmable
https://www.amazon.com/BA15D-AC100V-.../dp/B07RFFZ914
[3] some say they are dimmable
https://www.amazon.com/Equivalent-40.../dp/B08DP6CWNS
What makes an LED dimmable anyway? Is it just advertising hype?
I doubt it. Just guessing.
Or does the electronics have something special I can actually see inside?
YOu mean if you break it open? Even simple things have gotten
amazingly complicated inside, IC's for example. Even if you broke open
a dimmable and an non-d, I don't know if you can tell what's there to
make the leds work and what's there to make something dimmable.
Try sci.electronics.design if no one here has an answer.
or sci.electonics.repair