[NCARC] Converting 24v to 12v

Michael Robinson [email protected]
Tue, 29 Jan 2002 08:30:13 -0700


A friend of a friend is a ham in Africa.  His vehicle
has a 24vdc system.  The battery has no taps to divide
it into 12vdc series.

He needs about 20A to run his FT-100.  Can he put 2
12v car batteries in series and tap from the center
connection to get the 12vdc he needs?


      24vdc                         Ground
        +                              -
                       | |
                      ||||
        .-------------||||-------------.
        |        +    ||||   -         |
        |      24vdc   | |             |
        |                              |
        |                              |
        |                              |
        |                              |
        |     12vdc           12vdc    |
        |   +  | |  -       +  | |  -  |    
         -----||||------v-----||||-----|
               | |      |      | |     |
                        |              |
                        |              |
                         --- FT-100 ---


It seems too easy.  So before I show him how to
blow up his radio, I thought I'd check with you
guys as a sanity check.


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