Yes. If you hook up say 40 Led's in a series string then plug them in they should light up at low intensity. Next you short out one at a time until you get the brightness you want. Now make a second string with the diodes facing the other way. Since they are diodes they will use half of the line phase. but with two in antiparallel you will use all of it. Now make a switch to turn on/off one string. both strings on is full bright and one string is half bright. now use a selector switch to add the last 4 or so to get low intensity on the whole string. I hope this is clear if not email me.
This array uses 3v per led @ 30 ma or ~ 3.6 W per string or 7.2W when both strings are full brightness.
http://www.everlight.com/datasheets/6123...
You can buy replacement bulbs that are LED, working directly on mains AC power.
Remove your bulb, plug in a LED one. Good light, minimum power. Lots less trouble.
Looking at the average cost over a 5 year span (including buying bulbs and electricity) a 60 watt bulb compared to equivalent 7-watt LED results in a $35 cost & electric svings. So an yearly savings of $5 using an LED - but this is assuming it is used over 5 years to spread the initial cost over.
Usually the use of electricity is in inverse proportion with the technological quality of the device and in direct proportion with the intensity of light. There you go.
Why not use a strip led ? Those are preety neat... They are expensive tho, more of a novelty. The amount of regular LEDs it would take to light a room the same as a lightbulb would be far more expensive .. Go with a led or energy saver lightbulb!
I am a college student and want to save money. If I hung up one strand of around 80 LED lights in my room for a little bit of lighting at night, would that save me money compared to turning on the regular light (just one bulb)?
