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My LED hand powered flashlight with three LED bulbs cost $6 RETAIL
But we are asked to believe that one LED bulb costs $15?
I think the problem is that LEDs require DC.
My LED hand powered flashlight with three LED bulbs cost $6 RETAIL
But we are asked to believe that one LED bulb costs $15?
A light bulb where most of the electricity produces heat and not light is not an efficient bulb. Any advantage you get in winter from the additional heat you lose in summer.
Technically speaking, the efficiency of incandescents ARE at least 30% better than the government standard BECAUSE of that nasty engineering observation.. So the Fed standard is crappy and childish in it's interpretation of efficiency isn't it? Not like bureaucrates to see if installing LED replacements in Traffic Lights are gonna cause accidents in Minnesota winters because the snow now blocks the lamp. (True story)..
So I guess the government solution is to install HEATERS alongside these EFFICIENT LED traffic light bulbs eh Flopper??
My LED hand powered flashlight with three LED bulbs cost $6 RETAIL
But we are asked to believe that one LED bulb costs $15?
I think the problem is that LEDs require DC.
To get the equiv. lumens of a 60Watt incand. bulb, you need at least 6 or 7 of the most efficient LEDs. (much more performance than flashlight LEDs) TYPICAL current cost of these is about $1.20 each. That's almost $10 (COST!!) WITHOUT the optics, housing, heatsink, connectors, profit margin and a full switching AC/DC power supply to convert from mains AC...
My LED hand powered flashlight with three LED bulbs cost $6 RETAIL
But we are asked to believe that one LED bulb costs $15?
I think the problem is that LEDs require DC.
To get the equiv. lumens of a 60Watt incand. bulb, you need at least 6 or 7 of the most efficient LEDs. (much more performance than flashlight LEDs) TYPICAL current cost of these is about $1.20 each. That's almost $10 (COST!!) WITHOUT the optics, housing, heatsink, connectors, profit margin and a full switching AC/DC power supply to convert from mains AC...
I think the problem is that LEDs require DC.
To get the equiv. lumens of a 60Watt incand. bulb, you need at least 6 or 7 of the most efficient LEDs. (much more performance than flashlight LEDs) TYPICAL current cost of these is about $1.20 each. That's almost $10 (COST!!) WITHOUT the optics, housing, heatsink, connectors, profit margin and a full switching AC/DC power supply to convert from mains AC...
full switching power supply not required, just a bridge and voltage drop resistor/filter cap since the current thru/voltage drop accross the LED's would be a given constant requirement.
I'd be done by now..
My LED hand powered flashlight with three LED bulbs cost $6 RETAIL
But we are asked to believe that one LED bulb costs $15?
Ol' Fritz once again ignores that we have less than 3% of the world's oil reserves, and use 24% of the world's oil. There is no way that we can drill our way to oil independence. You want to see $30 a gallon gas overnight, embargo foreign oil.
A light bulb where most of the electricity produces heat and not light is not an efficient bulb. Any advantage you get in winter from the additional heat you lose in summer.
Technically speaking, the efficiency of incandescents ARE at least 30% better than the government standard BECAUSE of that nasty engineering observation.. So the Fed standard is crappy and childish in it's interpretation of efficiency isn't it? Not like bureaucrates to see if installing LED replacements in Traffic Lights are gonna cause accidents in Minnesota winters because the snow now blocks the lamp. (True story)..
So I guess the government solution is to install HEATERS alongside these EFFICIENT LED traffic light bulbs eh Flopper??
Of course that is the solution. You do not have to run the heaters continuosly. Just mount a light dectector on the traffic light. The heater only works when the light is blocked by snow. Not an engineering problem at all.
Hmmm..... Don't know about those particular LEDs. But the Streamlight Stinger that I use at work put out more light than a car headlight, and the single LED is less than 1/8" across. The cost of the flashlight, rechargable battery, recharger, and all, is about $70.
Stinger® Series - Stinger DS® LED HP | Streamlight
Hmmm..... Don't know about those particular LEDs. But the Streamlight Stinger that I use at work put out more light than a car headlight, and the single LED is less than 1/8" across. The cost of the flashlight, rechargable battery, recharger, and all, is about $70.
Stinger® Series - Stinger DS® LED HP | Streamlight
From your link;
High output 200 lumens
My truck headlight puts out 5,500 lumens
Luminics Titanium White 9007 Halogen 5500K Headlight Bulb with Free LED Keychain
Be serious. This ain't global warming, no need to lie about it. LED is good technology, people will choose it based on the facts.
To get the equiv. lumens of a 60Watt incand. bulb, you need at least 6 or 7 of the most efficient LEDs. (much more performance than flashlight LEDs) TYPICAL current cost of these is about $1.20 each. That's almost $10 (COST!!) WITHOUT the optics, housing, heatsink, connectors, profit margin and a full switching AC/DC power supply to convert from mains AC...
full switching power supply not required, just a bridge and voltage drop resistor/filter cap since the current thru/voltage drop accross the LED's would be a given constant requirement.
Care to sub-contract for me? Actually, you want to drive a series string of LEDs with a CURRENT, not a voltage. That's because miniscule changes in voltage cause large swings in power dissipation.. Also you need a switching power supply because you can't drop from 120VAC thru a bridge without a transformer. And the efficiency hit of using a "linear" supply approach would kill the efficiency advantage of the LEDs. Also because you'd generate a lot of heat in the process, and the supply needs to be in the base of bulb without normal convection cooling..
Hey USCitizen -- I WISH --- it was that simple...
If I tell you guys any more trade secrets -- you'll have to hire me....
My LED hand powered flashlight with three LED bulbs cost $6 RETAIL
But we are asked to believe that one LED bulb costs $15?
I think the problem is that LEDs require DC.
To get the equiv. lumens of a 60Watt incand. bulb, you need at least 6 or 7 of the most efficient LEDs. (much more performance than flashlight LEDs) TYPICAL current cost of these is about $1.20 each. That's almost $10 (COST!!) WITHOUT the optics, housing, heatsink, connectors, profit margin and a full switching AC/DC power supply to convert from mains AC...
I think the problem is that LEDs require DC.
To get the equiv. lumens of a 60Watt incand. bulb, you need at least 6 or 7 of the most efficient LEDs. (much more performance than flashlight LEDs) TYPICAL current cost of these is about $1.20 each. That's almost $10 (COST!!) WITHOUT the optics, housing, heatsink, connectors, profit margin and a full switching AC/DC power supply to convert from mains AC...
The cost usually drops dramatically if you buy 10k or so of the parts.
I used to work in electronics design and prototyping/manufacturing.
I once made hardware and software to talk to an electronic telephone syitching system in existence at that time.
And to do queries and intrepret the results.
Some squirrely algorythms were required to filter the results out.
The cost usually drops dramatically if you buy 10k or so of the parts.
I used to work in electronics design and prototyping/manufacturing.
I once made hardware and software to talk to an electronic telephone syitching system in existence at that time.
And to do queries and intrepret the results.
Some squirrely algorythms were required to filter the results out.
Hmmm..... Don't know about those particular LEDs. But the Streamlight Stinger that I use at work put out more light than a car headlight, and the single LED is less than 1/8" across. The cost of the flashlight, rechargable battery, recharger, and all, is about $70.
Stinger® Series - Stinger DS® LED HP | Streamlight
From your link;
High output 200 lumens
My truck headlight puts out 5,500 lumens
Luminics Titanium White 9007 Halogen 5500K Headlight Bulb with Free LED Keychain
Be serious. This ain't global warming, no need to lie about it. LED is good technology, people will choose it based on the facts.
Yep. And at about 50 ft, the beam on my light is about 4 or 5 feet across. And the lights in you truck are very much brighter than the lights in my 1990 van.
I agree. LED's small size, low heat emissions, and ability to delivery light that's similar to incandescent bulbs will make them a real winner. These characteristics are going create the opportunity for a lot of innovation in fixture design. Just like CFLs, cost will fall rapidly.The cost usually drops dramatically if you buy 10k or so of the parts.
I used to work in electronics design and prototyping/manufacturing.
I once made hardware and software to talk to an electronic telephone syitching system in existence at that time.
And to do queries and intrepret the results.
Some squirrely algorythms were required to filter the results out.
The cost is going to plummet on these things as they get popular; just look at the LCD flat screens. As the LED's are mass produced, the per unit cost is going to go down fast. I think LED lighting is going to take over fast, really fast. A local restaurant put in an LED backlit bar - it is just cool. No lights in the ceiling, no lamps, just a glowing bar that gives off the perfect amount of lumens for the environment. The effect is stunning.
