Help Me Make a Low Consumption Nightlight

Why make? Cheaper to buy, and easier.

Why would you ask a stupid question like that? There is no satisfaction in just buying an item when your intent is to expand your knowledge. Current limiting of AC waveforms using capacitors is pretty straight forward. There are a number of sites on the web with the information you need. One of them is http://www.marcspages.co.uk/tech/6103.htm . Needless to say, mains voltages and current are dangerous. Make sure you know what you are doing!

Why would anyone ask, anonymously, why anyone else would ask something, unless to somehow demonstrate that one was intent on proving himself less than stupid. But since you asked, let me offer the answer that was, no doubt perceived as well by others of similar intellect. To paraphrase your words, there is learning and then there is learning. There is satisfaction in learning and there is dissatisfaction in learning. As Ol' Ben Franklin, native American, once said: "Experience keeps dear school; fools learn in no other." Now then, it being said by inquirer that he needed a plug in nite light to plug in somewhere using 220-volt mains--nothing was said about a desire to learn how to manufacture 220-V nightlights--one would naturally be left to guess why? To save energy--when the savings would be trivial? To hope to have a more reliable nightlight when the cost of a nightlight failure or bulb replacement is insignificant? Who can say: he only said he wanted something to plug in; suggesting that convenient use was to be a criterion. It was the end that the inquirer seemed to emphasize, not the process of achieving the end. Given that, while it might be a "learning experience" to somehow put together a nightlite, it would also be a learning experience--too late--to embark upon the effort only to learn that the price paid for the lesson had not been worth it--that's assuming that the task had not been aborted prematurely, in frustration. Of course, it would be the inquirer's decision as to which advise, the stupid or the intelligent, he should follow; only problem is: he wouldn't have any way to know which was which--which was the less stupid--if he received only the "intelligent" advise. So it could be said that the "stupid question" that you decried was only seeking to give the same kind of learning experience that confronts all engineers and manufacturing managers: When it is better use of time and resources to make versus when it is better use of time and resources to buy. What you failed to ask yourself is, what might have been your response--directly to the inquirer--had the question been, say: "I want to build, and operate an automobile to get to my job; can anyone tell me what to do? If this answers your "why would I" question, please respond. Thank you for providing the opportunity to further clarify the rationale behind my question to the original inquirer. You have done both of us a good service.

very informative link....especially for understanding what goes into LED applications like traffic lights...and for seeing the limitations for very low voltate applications.

1. An LED normally has 1.8V - 2.2 VDC.
2. For 220 Volts supply 100 to 110 say 110, LEDs required to be connected in series with a
Bridge-Rectifier; Rated at more than 330VAC/500mA will work.

Enjoy

Just Screen your own logo on it :-)

Tried your link...a very impressive nightlight product. Especially liked the part about the bulb is easy to change. This is always a problem with many typical ones. Are you aware of any like the mini-nightlight which also has photosensor to turn itself off when the overhead light is turned on; or when the day light comes through a window? Moreover, one in which the photosensor is directed upward, or could be user directed, to that it works? Too often I find that those with photo sensors don't work well because the sensor cannot be "aimed"....in part because the plug is polarized so that the unit cannot be inverted and still plug in.

Check out www.datadisplay.com They should be able to help you with any Led you need

I am using 6 or 7 throughout the house they are available low energy cost.