electronics forum

[Voodoo Child]

is there a electronics forum? i knwo there is a genreal one here.

but is there like electechforums or something

i want to ask questions bout resistors and capacitors and all that good complicated stuff.

or is there a guy here i can IM with and discuss such things?

or can u guys handle that stuff? could i ask u guys? or du u not know anything.

 

[Bahawolf1]

I've studied electronics and digital logic briefly in high school..
Not exactly my area of interest entirely, but I'm sure someone is very experienced in electronics here.

 

[Voodoo Child]

k.

would this be considered a brigth led? if not, gimme a radioshack link to a bright one.

http://www.radioshack.com/product/index.jsp?productId=2062551&cp=2032058.2032233.2032298&pg=1&fbx=0&allCount=20&fbn=Type%2F4-7+mm+lens&f=PAD%2FProduct+Type%2F4-7+mm+lens&fbc=1&fr=StorePrice%2FRSK%2F00000000%2F00000399&parentPage=family

and if i hooked it to a 5v power supply, it would not work. this runs on 2.2-2.4v

i would need a resistor right? anything more? and how many ohms would that be? i want to hooks a led to a usb cord. so when i plug it in it will light up...w/e

question 2. for another project i am building a 5v power supply off of a 9v battery. i am gonna hook it up to a LM7805. i read somewhere to attach a 220uf capacitor to the gournd and output pins of theLM7805. is that worth it? and should i add anything else? i also read somewher i should use a small resistor between those two pins too. should i juse anything else? or...what i am asking is tell me all u know about what i should do if i build a 5v power supply.