RE: Soldering and resistors- what went wrong?
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RE: Soldering and resistors- what went wrong? - 3/31/2008 4:08:42 PM
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amanc96
Posts: 59
Joined: 12/16/2007
Status: offline
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quote:
ORIGINAL: axsys
ok, so explain how i just did this:
once again, the drop happens to all the components at once in a series circuit, not in order from positive to negative.
okay, i'm an idiot and totally agree with you. 
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RE: Soldering and resistors- what went wrong? - 4/1/2008 12:25:18 AM
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KRUSHER F3
Posts: 152
Joined: 9/17/2007
Status: offline
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quote:
ORIGINAL: amanc96
quote:
ORIGINAL: axsys
krusher, it shouldnt make a difference where you put the resistor in the circuit. the resistor will limit the current/voltage no matter if it is hooked up to the positive or negative source. components connected in series carry the same current as each other and each component experiences a voltage drop simultaneously, not one at a time.
try your experiment for yourself, it will be the same no matter where the resistor is, like sushi said. parallel is a little more complicated....
Actually, it will make a difference with an LED. The point of the resistor on an anode side of an LED instead of the cathode side is to limit the current through the LED to make sure you don't burn it up.
Actually I took an LED today and put the resistor on one side then the other side and the LED lit up and did not burn up, no matter which side it was on. So as long as the resistor IS in series it will still drop the voltage and not "burn up" the LED. Didn't believe it till I saw it with my own eyes.
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