Quote:
Originally Posted by bojan
Lower cost..
current limitation relies on internal resistance of batteries, and voltage close to threshold voltage of LED's.. but it is not good for LED's working life, because higher currents at switching on will (slowly) cause deterioration of LED's
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Right, so what's a resistor, what does it look like, where do I get one, how much does it cost, and how do I connect it in? Oh, and I am crap at formula so calculating the resistance needed is beyond me....
Working my way towards 20 questions...
EDIT: I found a 1K resistor online, brown, black red and gold bands. Now to look around in my shed for something old and electronic that I can pull one out of.....