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A 13.8V DC power supply

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SeanHatch

New Member
How would I make this? I would like to make it from 3 9V batteries, so how can I get it down to 13.8V, can I just use resistors or am I going to need a transformer or voltage regualtor.

Thanks
 

Skyknight

New Member
Here it is my idea :D

[Hey! I can't attach any drawing :evil: :eek: (And I wanted to)]

Can anyone tell me how I can't add an attachment here, but I can do it in other posts? What I'm doing wrong :?: :?
 

bogdanfirst

New Member
why do you need 3 batteries? i think that 2 are enough....this way you can reduce from 18 to 13.8 you can use a LM317 regulator....
 
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