- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
0
Posted on 11/15/23 at 9:12 pm to Obtuse1
quote:
That is a much bigger issue with incandescent bulbs. LEDs can handle being cycled on and off several hundred times a second without issue. That is how they "dim".
This hasn't proven true in practice for me. I mentioned in the above post that I have an LED bulb that has been burning for at least 7 years without a problem, having never been turned off. The others from that box have been long gone, and the comparison wasn't even close.
Posted on 11/15/23 at 9:22 pm to Obtuse1
quote:
LEDs can handle being cycled on and off several hundred times a second without issue. That is how they "dim".
That's how they make "noise" in circuits and simply being hooked up to 60 Hz AC that is already turning them on and off 60 times/second is detrimental to their durability. That's why they need extra circuitry to fix their flickering and not cause headaches. Dimmable LEDs are even worse which is why the best ones are not dimmable.
Posted on 11/15/23 at 9:24 pm to theantiquetiger
quote:
Only during the senior citizen swinger parties!
quote:
77-year-old-man illegally obtained US$2K worth of erectile drugs and intended to sell them in retirement community: police
Posted on 11/15/23 at 9:35 pm to Steadyhands
quote:Quick math:
If you're connected to the grid and worried about it from a cost standpoint, why? You might save 100 bucks over the course of your life living to 80 plus years old.
A typical 60 watt incandescent minus an equivalent 10 watt LED is 50 watts of wasted power. Times 2 hours per day is 100 watt-hours. Times 365 days per year is 36.5 kWh. Times ~15 cents/kWh is ~$5.50. Times, let's say, 40 more years of life is $220.
Per bulb.
Posted on 11/15/23 at 10:31 pm to Pepperoni
Thanks. I’m just here to have a good time. 
Posted on 11/15/23 at 10:37 pm to Tyga Woods
I’ve had a house full of LED bulbs & might’ve changed 2 in 15 years.
Posted on 11/15/23 at 10:38 pm to theantiquetiger
Agree 1000% cost 10 times as much though
Posted on 11/15/23 at 10:47 pm to Clames
quote:
That's how they make "noise" in circuits and simply being hooked up to 60 Hz AC that is already turning them on and off 60 times/second is detrimental to their durability.
I am not 100% sure I understand what you are saying. LEDs are not significantly impacted by strobing them. LEDs are used in many functions where they strobe constantly. One example many people have in their homes is a LED backlit TV. There is no negative effect on LEDs with turning them off and on like incandescent bulbs. That is why they work so well in some many applications.
quote:
That's why they need extra circuitry to fix their flickering and not cause headaches.
The need extra circuitry to function and not just to reduce flicker. The need DC current. They will first need a bucking transformer, then a 4-diode bridge rectifier, then a capacitor for the filter circuit, and a regulation circuit to produce stable voltage you still have a bit of a saw tooth wave (all positive polarity) after the filter portion of the driver circuit. This is all you need for some LED applications but in others, you will need a pulse width modulation circuit to strobe the LED for variable light output. This is a VERY simple circuit and I imagine most LED drivers in bulbs use a constant current source circuit with a couple of transistors, a couple of resistors, a diode (maybe), and a PWM controller (if they are dimmable).
Some people are more prone to flicker induced headaches than others. The problem is low frequency non-visible. The old tar ballast fluorescent bulbs flickered at 120hz which is apparently right in the sweet spot to cause certain people headaches. LED drivers almost always have flicker designed into them but a well-designed one will use much higher frequency flicker. If it is dimmable it should be designed so the lowest frequency output is higher than what is known to trigger headaches. Again the high frequency on-off cycling does not effect longevity in LEDs.
As I was typing this it struck me it would be interesting to wire a house with a single bucking transformer at the load center and run all the lighting circuits from it. It would be more energy efficient, reduce the part count/cost in the individual bulbs, reduce the heat in the bulbs by taking out the primary heat producer which should increase longevity, and potentially reduce the cost of wiring by using smaller gauge wire but might not always be the case since lighting circuits would have to be independent of all the 120v circuits for everything else. The problem with this is it would complicate wiring in the walls/ceiling since the low and high-voltage wires have to be separated to meet NEC and you would have to have separate boxes for switches where you had ceiling fan and light switches again due to the required separation of hi and low voltage.
Posted on 11/15/23 at 11:11 pm to Dawgfanman
quote:
Govt shouldn’t be dictating what type of lightbulbs we can have, how much water we can use to flush
Trump fixed this after Obama screwed up light bulbs and shower heads but Biden went back to the garbage regulations.
With Trump being a hotel guy it was funny how he harped on how light bulbs and shower heads suck during 2016. Of all the bluster it was one of the things you could tell he had a lot of experience in dealing with.
This post was edited on 11/15/23 at 11:12 pm
Posted on 11/15/23 at 11:35 pm to theantiquetiger
quote:
These piece of shite bulbs do not last 10x longer than the incandescent bulbs.
I replaced all of our van lights with LED in 2018. In the last 6 months, I’ve replaced 4/6 LED cans in our kitchen, and another just went out. Of course, the previous brand has been discontinued, so I’ve been putting it off so I don’t have either 1 light that’s a different color/brightness than the rest or the trim plate looks different the others.
They are/were ‘only’ about $15 per fixture, so not a huge investment, but we definitely didn’t get 10,000 hours out of them.
Posted on 11/15/23 at 11:43 pm to theantiquetiger
Four pages talking about light bulbs. The average age of the OT is now closer to Edison than Justin Bieber.
Posted on 11/16/23 at 12:47 am to theantiquetiger
The LED emitters themselves can last decades. As others said, the problem is the driver circuit boards go out. Buying name brands can alleviate it to some degree, but they still won't live up to their rated life.
The culprit is heat. All the heat generated makes the solder on the board come loose over time. It's especially bad if you put the bulb in a completely closed fixture with no air flow.
Your best bet is to buy a light fixture with built in LEDs. They last longer because they have heat sinks built in and the fixture has much more surface areas to dissipate the heat.
The culprit is heat. All the heat generated makes the solder on the board come loose over time. It's especially bad if you put the bulb in a completely closed fixture with no air flow.
Your best bet is to buy a light fixture with built in LEDs. They last longer because they have heat sinks built in and the fixture has much more surface areas to dissipate the heat.
Posted on 11/16/23 at 2:55 am to Tyga Woods
It’s that quality riposte that only Chicken’s premium subscribers can access. 
That’s why I’m here.
That’s why I’m here.
Posted on 11/16/23 at 3:56 am to theantiquetiger
They do last longer but is it worth the price difference? 
Posted on 11/16/23 at 4:49 am to Twincam
quote:
They put cheap, shite drivers in them that can’t handle the heat over time. I’m going back to compact fluorescent as I change the dead LEDs.
I went total CFL and was not satisfied. They didn’t last and took too long to “warm up”. If you get a quality LED they tend to last longer. Went total LED from incandescent about 2 years ago. I have yet to have one go out.
Posted on 11/16/23 at 5:04 am to theantiquetiger
Dem low watt LEDs prevented 0.00000000000000000001 CO2e (carbon dioxide equivalents) Baw! Better for you to be walking in the dark stubbing your toe than all of us drowning in rising ocean levels.
Posted on 11/16/23 at 5:15 am to theantiquetiger
I still have a huge box of pre-Obama bulbs. Bought a few hundred dollars worth before he banned them.
Posted on 11/16/23 at 5:23 am to Tall Tiger
quote:
Yeah. I installed a lot of LEDs in my house in 2014. Almost all of them are still going strong. You may have bought cheap ones. You have to make sure you buy good ones.
But, why? The light they emit sucks. Creates a miserable ambiance.
Posted on 11/16/23 at 6:35 am to theantiquetiger
My dishwasher and dryer are basically new and don’t work unless you turn them up to 100%. Takes 4 freaking hours to wash dishes and 2-3 cycles to dry clothes.
Page 4 of 5
Popular
Back to top
Follow TigerDroppings for LSU Football News