Re: What size resistor to reduce 4.5v to 3 v
From: aurgathor (spam-me_at_if-you.com)
Date: 01/27/05
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Date: Thu, 27 Jan 2005 14:27:47 -0800
With non-constant load, you could use some
combination of diodes. Si diodes will drop
about 0.6 - 0.9V, Schottky diodes 0.3 - 0.5V,
Ge diodes 0.3 - 0.4V, LEDs 1.7V - 3.5V.
These are *ballpark figures*, so in rare cases
the drop could be outside of the above ranges.
"BIGSteve" <fitzgerald_s@hotmail.com> wrote in message
news:1106786477.379089.27880@f14g2000cwb.googlegroups.com...
> got an old portable cd player needs 3vdc got a 4.5vdc car adapter need
> to make the 2 work together. So how do i reduce the 4.5v to 3v can i
> use a resistor? what size? thanks
> also what size to go from 12vdc to 6vdc
>
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