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Old Feb 27, 2013, 04:09 PM
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United States, PA, Lansdale
Joined Feb 2013
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voltage reducers

hey guys; what is a good voltage reducer,and where can i get them.i need to go from 12v to 3v and 12v to 9v. thank you very much
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Old Feb 27, 2013, 04:13 PM
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The Netherlands, ZH, Hoogvliet
Joined Jul 2008
318 Posts
How many Ah's? If it is for logic circuit you can use 78XX ic's. Or else you can always buy these kind of units:
http://www.ebay.com/itm/LM2596-DC-DC...item564ee165a1

Danny
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Old Feb 27, 2013, 04:20 PM
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United States, PA, Lansdale
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danny;one is forrunning navigation lights,the other is for a radar bar. as for the Ah's i am not sure
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Old Feb 27, 2013, 05:25 PM
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Joined Dec 2012
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There are different ways to tackle this. Voltage regulators will keep the voltage at a target voltage (but require a higher input voltage). If your input voltage doesn't vary much and is at a known value and you're not going to be pulling a lot of amps, you could just use some resistors (make a voltage divider), although this isn't necessarily efficient. I'm not really an electronics guy, though.
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Old Feb 27, 2013, 07:28 PM
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Spanaway, WA
Joined Jul 2006
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Here check this video out. The guy here talks alot about voltage dividers and regulators and how one is or is not better than another. It also shows you schematics that will allow you to build your own pretty easily.

Tutorial 03 for Arduino: Electrical Engineering Basics (16 min 12 sec)


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