quick electrical question

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Oct 24, 2001 | 05:04 PM

multiplexor

Thread Starter

Senior Member

Joined: Aug 2001

Posts: 1,503

quick electrical question

ok i forgot how to do this... it's been a while

what's the formula to figure out what resistor i need to
drop 12 volts down to... i dunno, we'll say 6 volts?

any help would be great thanks

Oct 24, 2001 | 05:26 PM

Yellowbrother

Senior Member

Joined: Oct 2000

Posts: 1,249

Re: quick electrical question

Quote:

Originally posted by multiplexor
ok i forgot how to do this... it's been a while

what's the formula to figure out what resistor i need to
drop 12 volts down to... i dunno, we'll say 6 volts?

any help would be great thanks

well u need atleast two loads to drop something to a certain voltage if not one load will take up all the voltage...

Oct 24, 2001 | 05:29 PM

Yellowbrother

Senior Member

Joined: Oct 2000

Posts: 1,249

v=r*i
r=v/i
i=v/r
p=v*i

Oct 25, 2001 | 07:26 AM

«§»Craig B«§»

Supporting Maxima.org Member

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Joined: Aug 2000

Posts: 3,786

Re: quick electrical question

Quote:

you talking about a voltage divider circuit?

check here: http://hyperphysics.phy-astr.gsu.edu...ic/voldiv.html

you could also try to find a voltage regulator but those usually dont handle enough current for car applications