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ruslanch

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Posts posted by ruslanch

  2. goldenreference low voltage power supply

    in Do It Yourself

    Posted

    17 hours ago, gepardcv said:

    @ruslanch, @Pars: How large is the redone GRLV board?

    129x99mm

    17 hours ago, Pars said:

    I had tried doing some mods to your layout in KiCad (going back to the RS402 bridges, and adding a Phoenix 508/Molex KK jack that I did in an Eagle library). I was having a hard time figuring out the libraries in KiCad and the schematic image vs. footprint.
    I’m using a Mac, so not sure the OpenGL is even an option in that...

    Something like this: Gerbers, KiCad project, 3D view. Yes, finding the components in the library is sometimes difficult ).

  3. goldenreference low voltage power supply

    in Do It Yourself

    Posted

    14 hours ago, Pars said:

    Nice job! KiCad perplexes me, steep learning curve.

    Thanks! Initially, I began making a scheme in Eagle CAD and it turned out to be very convenient. But when I started making the PCB layout, then rested in the restrictions of the free version of Eagle, and continued the layout in KiCad. In fact, the difference is small, especially if in KiCad enable the OpenGL mode. The interactive router in KiCad is a bit blunt, it needs a little more tips, but this is a very small drawback. For a new version of the PCB layout, I completely remade it from scratch in KiCad, and now I find KiCad very convenient.

    PS. Has slightly updated the project - added a fill of the bottom layer and added 10 ohm resistor for grounds separation.

    • Like 1

  5. goldenreference low voltage power supply

    in Do It Yourself

    Posted

    I want to use GRLV for my new headphone amplifier. But I need 30V power supply with 3 sockets, and place for large capacitors in the filter (up to 35mm in diameter), and I want to use Elna Silmic II 220uf, 50V as output capacitors. And I spent two evenings to made my own GRLV pcb, simultaneously learning kicad. This is the first pcb in my life, which I have made myself. I also replaced the diode bridges with the fast diodes MUR820, and shunted them with ceramic capacitors. Perhaps someone will find this useful. But I'm not sure of the complete absence of errors ).

    Gerbers: https://drive.google.com/open?id=15m6y5CElB4RjW0pRd9Lu47jA_6w2T-0V

    Project: https://drive.google.com/open?id=1bV1xTn5Iw3sC_sxR5AL8iZZ5hN85-95U

    • Like 1

  9. The Multi Amp aka Dynalo Mk2

    in Do It Yourself

    Posted

    8 hours ago, kevin gilmore said:

    I was thinking the other board.  Yes that board gets that hot due to the transistors

    you can add heatsinks

    Thank you! I hope that this is indeed so, not my mistake.

    8 hours ago, GrindingThud said:

    Nice!, what heatsink is that on the outputs? I'm so far behind...I still need to build mine. I never found the pot either, is there a source?

    Thanks a lot! Heatsinks from the nearest radio parts store, noname ). I bought a pot on ebay. I found a seller with a similar product and asked him to order from the manufacturer for me. It took 3 months but I got what I ordered.

  12. The Multi Amp aka Dynalo Mk2

    in Do It Yourself

    Posted

    40 minutes ago, Pars said:


    I don't think so. Double check all components, check for solder bridges, etc. And this is both THAT340 chips are getting hot? How hot?


    Sent from my iPhone using Tapatalk

    Thanks! 65-70°C on that340, both. But works fine. Now I checked all the components of the strapping - it's all right. But hot.

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