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  • battery charger Help

    Hi everyone
    I want to identify the components of this circuit (battery charger)

  • #2
    What do you want to identify? Everything is clearly shown in the schematic.

    Comment


    • #3
      If you plan on using this as a general purpose power supply, don't. At the very least, make sure your last will and testament, and your homeowners insurance are up to date.

      Comment


      • #4
        Originally posted by macross View Post
        What do you want to identify? Everything is clearly shown in the schematic.
        The value of ziner diode?

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        • #5
          Originally posted by rickb View Post
          If you plan on using this as a general purpose power supply, don't. At the very least, make sure your last will and testament, and your homeowners insurance are up to date.
          I plan to use it as charger for 4 cells (Li-Ion 3.4 v) in series.

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          • #6
            Originally posted by totob View Post
            The value of ziner diode?

            It appears to be 33volt 5 watts , but only use it with an isolation transformer thats a very dangerous circuit feeding a straight 220 volts into it, there are better circuits around

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            • #7
              http://katod-anod.ru/rd/d816 use google translate. I personally would use something like tp4506 lion battery charger module. They are cheap as chips https://www.youtube.com/watch?v=KoHtxZG7leQ

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              • #8
                If one of those Bridge Diodes takes a spike and turns wire things could get ugly touching the connector.

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                • #9
                  Tested and proven...for 3 batterries in series just dont include the last two..
                  Attached Files

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                  • #10
                    Originally posted by homefire View Post
                    If one of those Bridge Diodes takes a spike and turns wire things could get ugly touching the connector.
                    Thanks for the warning

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                    • #11
                      Originally posted by 6666 View Post
                      It appears to be 33volt 5 watts , but only use it with an isolation transformer thats a very dangerous circuit feeding a straight 220 volts into it, there are better circuits around
                      This is the PCB

                      Comment


                      • #12
                        Originally posted by totob View Post
                        I plan to use it as charger for 4 cells (Li-Ion 3.4 v) in series.
                        li-ion sells is not charging in series.

                        Comment


                        • #13
                          Originally posted by jladre View Post
                          Tested and proven...for 3 batterries in series just dont include the last two..
                          thanks for this schematic I think this is safe circuit
                          what serve these Variable resistors? is it for adjust the output voltage?

                          Comment


                          • #14
                            i did buy this one. low price. remaked it for doing not insert sells, added a cable with connector.

                            http://www.ebay.com/itm/2PCS-18650-3...YAAOSwHQ9WUm~n

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                            • #15
                              Originally posted by kt315 View Post
                              i did buy this one. low price. remaked it for doing not insert sells, added a cable with connector.

                              http://www.ebay.com/itm/2PCS-18650-3...YAAOSwHQ9WUm~n
                              The service buying online does not exist in my country. for that reason i want to build it with my self.

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