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Tiny metal detector ( from pulsdetektor )

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  • Tiny metal detector ( from pulsdetektor )

    Hi
    any useful info about TINY MD are welcome...
    http://www.pulsdetektor.de/html/tiny.html
    regards

  • #2
    did you have a look at the layout, shematic, partlist?

    http://www.pulsdetektor.de/html/tiny.html


    what Infos do you Need exactly?

    you can Change the coil Driver fet by a newer model from irf9640 (lower on resistance - more power on coil)
    use a variable wire pot as damping resistor (500R)

    dont use liy litz wire for the coil use yv massive core wire 0,5mm

    Comment


    • #3
      Originally posted by bernte_one View Post
      did you have a look at the layout, shematic, partlist?

      http://www.pulsdetektor.de/html/tiny.html


      what Infos do you Need exactly?

      you can Change the coil Driver fet by a newer model from irf9640 (lower on resistance - more power on coil)
      use a variable wire pot as damping resistor (500R)

      dont use liy litz wire for the coil use yv massive core wire 0,5mm
      yes i have but i can not understand german language !
      i am lookung for any modification on TINY MD...
      are the pcb correct?! or have any error?
      have you any new pcb file in LAY format?
      what is the liy litz or yv?!! can you show me by photo?

      Comment


      • #4
        !!! ...................... !!!

        Comment


        • #5
          Originally posted by silver View Post
          !!! ...................... !!!
          Silver, try this! But first check the lay!
          Attached Files

          Comment


          • #6
            Originally posted by Toros View Post
            Silver, try this! But first check the lay!
            thank yoy Toros
            i"m working on original pcb from pulsdetektor.de but there is something obscure for me!
            such as R3 value! 1K or 10K?!?
            what is blak resistor in pcb? jumper or 0 ohm resistor or other thing?!
            Click image for larger version

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            Comment


            • #7
              Black resistors are bridge (zero ohm). In original "Bauteileliste" R3 is 1 k. Black L1 is a coil!
              Attached Files

              Comment


              • #8
                thanks my friend

                Comment


                • #9
                  Transistoren [Q]:
                  [Q1] -------- MTP2P50E (PMos/500V) irf 9640 besser
                  [Q2 / Q3] --- BC547
                  [Q4] -------- BC557

                  IC`s [U]:
                  [U1 / U8] --- NE555
                  [U2] -------- LF357
                  [U3] -------- HEF4053
                  [U4] -------- TL082
                  [U5 / U6] --- HEF4528
                  [U7] -------- LF356
                  [U9] -------- CNY17
                  [U10] ------- ICL7660
                  [U11] ------- 78L08

                  Dioden [D]:
                  [D1] -------- 1N4007
                  [D2 / D3] --- 1N5817 (Schottky)

                  Kondensatoren [C]:

                  -Vielschichtkondensatoren (Ker. = Keramik):
                  [C9 / C7] --- 3,3nF
                  [C18] ------- 330pF = 0.33nF

                  -Folienkondensatoren (Mks):
                  [C2 / C10 / C11] ------------- 10nF
                  [C3] ----- ------------------- 33nF
                  [C4 / C5 / C6 / C16 / C17] --- 100nF
                  [C8] ---- ---- ----- --------- 47nF

                  -Elekrolytkondensatoren:
                  [C1] ---------- 4700yF-10000yF / min. 16V (nehmt den 10000yF!!!)
                  [C13 / C12] --- 47yF / 16V
                  [C15 / C14] --- 470yF / 16V

                  Widerstände [R]:

                  [R1] ------------------------------------ 2K - 2,2K / Metallfilm / 2W
                  [R2 / R3 / R4 / R26 / R28 / R33] -------- 1K / Metallfilm
                  [R11 / R12 / R21 / R22 / R23 / R25 / R35] --- 10K
                  [R8 / R13 / R14] ------------------------ 1M = 1000K
                  [R19 / R20 / R24] ----------------------- 15K
                  [R30 / R31] ----------------------------- 22K
                  [R15 / R16] ----------------------------- 2,2M = 2200K
                  [R7 / R10] ------------------------------ 560
                  [R5] ------------------------------------ 68K
                  [R6] ------------------------------------ 5,6K
                  [R9] ------------------------------------ 50K / Trimmer
                  [R17] ----------------------------------- 4,7K
                  [R18] ----------------------------------- 150K
                  [R27] ----------------------------------- 100K
                  [R29] ----------------------------------- 22
                  [R32] ----------------------------------- 220
                  [R34] ----------------------------------- Poti 10k mit Schalter besser 10gang poti

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