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  • #16
    500 meters sens on power lines

    http://www.thunting.com/smf/pi_desig...28024.800.html

    Posted on: May 12, 2018, 11:07:01 am
    --------------------------------------------------------------------------------
    I forgot to say that I already use an 8 shape coil and I can say it's very effective against EMI but for
    very (very very Cool) big frame, the Delta Pulse start chattering near (500meters) big power lines

    Comment


    • #17
      Ok try powered your Delta pulse from DC step up converter and see how it work

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      • #18
        you are very strange! my first DP (sold) was with the converter and you say like you doubt!

        Comment


        • #19
          Output of converter has 30mv-40mv ripple. I have never used one so Not sure how this will affect circuit.
          Can use low pass filter 100uf cap 100ohm resistor. 78l12 takes care of rest.
          Can use 1000uf smoothing cap

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          • #20
            LC filter does his job good. open any impulse power supply and you will see LC filters.

            Comment


            • #21
              Ok use converters for PI detectors, your chioce

              Comment


              • #22
                Getting noise out of converters can be hard but useing OS-CON capacitors on the output can help, but I tend to agree that useing plain old batteries is an easy solution, PLUS if you mount the battery box under the arm cuff the extra weight will help to balance the weight of the coil , your detector should balance just in front of the handle

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                • #23
                  felezjoo at 14.5 vdidnt work u should get higher than14.5 v

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                  • #24
                    simply take a 4x18650 holder for the felizjoo
                    easy and powerful,

                    i can not recommned to use more then 4 cells

                    Comment


                    • #25
                      Originally posted by bernte_one View Post
                      simply take a 4x18650 holder for the felizjoo
                      easy and powerful,

                      i can not recommned to use more then 4 cells
                      Exactly, due to discharge curve for 200mA, I would not discharge it under 3,5V, which in case of 4 cells will give you 14V and it is exactly minimal input for 78L12.

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                      • #26
                        a scheme to reduce noise on xl6009? I'm currently using it on felezjoo with 3 18650 batteries and bms 3s.

                        actually I had a basic problem since I started using the boost converter. unfortunately I don't have a 4s bms and the fourth battery. if it were possible to be able to solve with few components it would be excellent

                        Comment


                        • #27
                          Originally posted by useus View Post
                          a scheme to reduce noise on xl6009? I'm currently using it on felezjoo with 3 18650 batteries and bms 3s.

                          actually I had a basic problem since I started using the boost converter. unfortunately I don't have a 4s bms and the fourth battery. if it were possible to be able to solve with few components it would be excellent
                          :edit: let the problem forget it is not that

                          Comment


                          • #28
                            Boost converters can be very noisy, try a OS-CON electrolytic capacitor on the output

                            Comment


                            • #29
                              Without synchronization you must learn to live with the noisy PSU.

                              Comment


                              • #30
                                Originally posted by 6666 View Post
                                Boost converters can be very noisy, try a OS-CON electrolytic capacitor on the output
                                I solved the problem, it was not that, os-con cap is already there

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