TWRPS-pp

Posted bymultiblitz

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    • 12/07/2022 at 19:14 #1650
      multiblitz
      Participant

        I am finishing this one as well…got 25 2sk170BL from Banzai…quick question: Is any matching or selection necessary ? Or just put two in …no matter how Idss is ?

      • 12/07/2022 at 19:25 #1654
        The Well Audio
        Participant
          multiblitz Said

          I am finishing this one as well…got 25 2sk170BL from Banzai…quick question: Is any matching or selection necessary ? Or just put two in …no matter how Idss is ?

          No matching or selection necessary.

        • 03/08/2022 at 00:31 #1706
          multiblitz
          Participant

            Ok, its up and running….but I am too stupid to understand force, sense and what to connect to what…I tried to bring force and sense together on each oitput + and ground ….smoke from the 3.3ohm resistor, no LED on….

             

            Can you please provide a little drawing for the stupid ?

          • 03/08/2022 at 00:40 #1708
            The Well Audio
            Participant

              If you get smoke from 3R3 the regulator is drawing too current.
              All the LEDs have to be on, Please check polarity.

              Schematic and layout attached.

              If Kelvin connection is not necessary two jumpers have to be installed as in the attached picture. One between the two terminals of J3 and the other between the two terminals of J4.
              For the positive versione Vout has to be taken from J3 and Ground from J4.

              Two more jumpers have to be installed for positive regulator: the first between B and Y of JP1, the second between Y and B of JP2.

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            • 22/08/2022 at 16:05 #1751
              multiblitz
              Participant

                Thanks, I believe it was a short in the connector, isolated everyting and the regulator worked as expected….It sounds a bit slow and not open in the trebles yet…I will therefore mod the raw supply a bit, starting by kcking the 3.3ohm resistor out and give it a choke with low Rdc instead…lets see what this does…and finally i might give it a much bigger lt4320 raw supply …I find the sonic difference to the linear version is clearly there…the linear version much better trebles, buit less warmth and substance…so we want both…

              • 13/11/2023 at 10:25 #2589
                G600
                Participant

                  Dear Andrea,

                  I have discovered the last designs you have produced.

                  Have you compared the “old” push-pull regulator versus the new TWRPS-XOS with the clocks?

                  Thanks

                • 13/11/2023 at 11:46 #2591
                  The Well Audio
                  Participant

                    Not yet compared, I have designed the TWRPS-XOS for those who likes shunt regulators over linear regulators.

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