If I'm to connect about 20 LED's together, how would I do that?

Subject: If I'm to connect about 20 LED's together, how would I do that?

Date: Sat Jan 27 16:43:38 2001
Posted by Joshua
Grade level: 7-9 School: Home Schooled
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Engineering
ID: 980631818.Eg

Message:

The LED's are an asortment of about 18 and came in one box.(From Radio Shack)I just want them to light up with a Cds. (Light sensor)I am under the understanding I need to use resistors and increase voltage. Is this true? Will a 9v battery work on this? What circit should I use?(series or parellel?) If it helps, I'm trying to make a Star Trek Tricorder that lights up. This has been made before for a prop on a show. THanks and God Bless!!!!

Re: If I'm to connect about 20 LED's together, how would I do that?

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