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Lowering voltage

Discussion in 'General Electronics Discussion' started by john2k, Dec 23, 2012.

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  1. john2k

    john2k

    163
    2
    Jun 13, 2012
    I have a power boosted external tv antenna which comes with a power supply that delivers 6V DC but my receiver box also delivers voltage so i am not using the 6V DC power supply supplied with the antenna.

    This is working fine, however, when measuring the voltage that my receiver is supplying to the antenna with a multimeter, it reads over 12VDC whereas the power supply supplied with the antenna reads 6VDC. Although its working with the receivers 12VDC, i am concerned that i may be damaging it. So my question is, what is the best way to reduce the voltage inline that does not have much of a Forward Current as i'm sure the current being delivered by the receiver is very low and therfore anything used up by a limitor will only cause problems. Any suggestions on easiest and simplest inline solution? Perhaps a Zener diode? if so any particular one?

    Thanks
     
  2. CocaCola

    CocaCola

    3,635
    5
    Apr 7, 2012
    You can use a Zener but dollar for dollar regular power diodes are cheaper, you will just need to use more of them... For regular diode just figure about a 0.7V drop per diode...
     
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