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  1. Home
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  3. Telephone line switch

Telephone line switch

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  • S Offline
    S Offline
    stingone
    wrote on last edited by
    #1

    Hi everyone.

    I'm looking for a way to switch on/off my telephone line. As we have a litte baby we dont like to be desturbed after 8 PM. i thought about a swith in the telephone line. any ideas?

    T 1 Reply Last reply
    0
    • S stingone

      Hi everyone.

      I'm looking for a way to switch on/off my telephone line. As we have a litte baby we dont like to be desturbed after 8 PM. i thought about a swith in the telephone line. any ideas?

      T Offline
      T Offline
      TheoL
      Contest Winner
      wrote on last edited by
      #2

      @stingone I think it could be achieved by a relay. I know from the guy from hackaweek at youTube, that there can be peaks of up to 50V on a telephone line. I don't know the amperage, but you can measure that.

      S 1 Reply Last reply
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      • T TheoL

        @stingone I think it could be achieved by a relay. I know from the guy from hackaweek at youTube, that there can be peaks of up to 50V on a telephone line. I don't know the amperage, but you can measure that.

        S Offline
        S Offline
        stingone
        wrote on last edited by
        #3

        @TheoL said:

        @stingone I think it could be achieved by a relay. I know from the guy from hackaweek at youTube, that there can be peaks of up to 50V on a telephone line. I don't know the amperage, but you can measure that.

        Normaly its arround 40V DC between A and B
        When being called 40V DC + 20 AC 25Hz.
        When the line is open it drops to 10V DC

        Amps is arround 30mA

        Dont know what kind of relay to use to achieving this.

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        • mfalkviddM Offline
          mfalkviddM Offline
          mfalkvidd
          Mod
          wrote on last edited by
          #4

          The relay example should work fine I think.

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