• Recent Forum Posts

      Silvio

      vacuum tube smsp

      May I ask where are you going to take the sample voltage for the regulation of the output voltage?
      I see you opted yes for regulation in Excellent

      Silvio 03-15-2019, 06:50 AM Go to last post
      Silvio

      vacuum tube smsp

      Regarding rectification well the bridge requires one winding while center tap requires two windings.

      One tip for you if you want to make

      Silvio 03-15-2019, 06:36 AM Go to last post
      eonscom

      vacuum tube smsp

      Re-upload your photo

      eonscom 03-14-2019, 02:58 PM Go to last post
      eonscom

      vacuum tube smsp

      Thank you for your quick reply.
      The above specs were first attempted and have problems.
      Currently in production
      The problem is trying

      eonscom 03-14-2019, 02:40 PM Go to last post
      Silvio

      vacuum tube smsp

      Hi Eonscom,
      One last note if you want to make adjustment just calculate that you have 7 volts per turn. 155v / 22 turns pri =7v per turn

      Silvio 03-14-2019, 01:42 PM Go to last post
      Silvio

      vacuum tube smsp

      Hi Eonscom, I have made some calculations for you. As for the core material I chose N27 which is not so high permeability as the core you are using

      Silvio 03-14-2019, 10:05 AM Go to last post
      eonscom

      vacuum tube smsp

      1 core material

      -I do not know the exact specifications.
      But size is the same (etd49)


      2 switching frequency

      eonscom 03-14-2019, 05:59 AM Go to last post
      Silvio

      vacuum tube smsp

      Probe the primary winding. and see if the ringing is present at the primary. If it is there then you have to put a 470pf cap in series with a 3 watt

      Silvio 03-13-2019, 10:53 PM Go to last post
      eonscom

      vacuum tube smsp

      The current image smps is rectified to about 315v and is used as the B + voltage of the tube amplifier
      HER 508 4 diodes are used by bridge rectification.

      eonscom 03-13-2019, 07:43 AM Go to last post
      MicrosiM

      vacuum tube smsp

      Generating that number of output voltages with that PCB is a huge challenge.

      I also don't understand your idea behind the variable output

      MicrosiM 03-12-2019, 10:16 AM Go to last post
    • Group Buy 2KW Class-H Amplifier

      Quote Originally Posted by lavindoo View Post
      Mr ... how to know ir2117 work well ... I am building a class H amp volt dc step-up using ir2117 ... on the negative rail can not walk ...
      Buy the PCBs, and and the amplifier its cheaper
      This article was originally published in forum thread: Group Buy 2KW Class-H Amplifier started by meanman64 View original post
    • Recent Activity Widget

      eonscom

      vacuum tube smsp

      Thread Starter: eonscom

      Hi I am going to make smps to apply to vacuum tube amplifiers. So far, the sg3525 and ir2110 have been used to produce more than 450V 1A, but there...

      Last Post By: Silvio 03-15-2019, 06:50 AM Go to last post
      Silvio

      Compact Aux power supply for smps

      Thread Starter: Silvio

      Here I am presenting an auxiliary power supply meant to be fitted with a SMPS of half or full bridge. The output voltage was chosen to be 17v which...

      Last Post By: quadtech 03-06-2019, 06:17 AM Go to last post
      prasimix

      Open source power pre-regulator

      Thread Starter: prasimix

      I'd like to present my first SMPS project of power pre-regulator that can be used in variable/programmable bench power supply as replacement for AC...

      Last Post By: MicrosiM 03-12-2019, 09:46 AM Go to last post
      leosedf

      2.5kW RF power supply

      Thread Starter: leosedf

      Hello guys and thank you all for your great info here, i have so much to read. I wanted to ask you if you can give me any guidelines on what to...

      Last Post By: leosedf 03-08-2019, 07:19 PM Go to last post