Audio SMPS cap tips?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Khron
    Badcaps Legend
    • Sep 2006
    • 1350
    • Finland
    #1

    Audio SMPS cap tips?

    Greetings everyone...

    Sometime in the (very) near future, i'll be putting together a pair of half-bridge SMPS's (as per http://www.diyaudio.com/forums/showt...&pagenumber=28 ), and i was wondering if anyone around here had anygood ideas for the output caps...

    I have to mention that it's gonna put out around +/-35Vdc so 50V caps are a minimum. Grid 10mm, dia 16mm.

    If at all possible, recommendations should be from among the caps available at Farnell (pretty much the only trustable distributor at hand).

    Many thanks in advance,
    Chris
    Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans
    Tags: None
    • Khron
      Badcaps Legend
      • Sep 2006
      • 1350
      • Finland
      #2
      Re: Audio SMPS cap tips?

      Quick edit: grid = 7.5mm
      Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

        Comment

        • Khron
          Badcaps Legend
          • Sep 2006
          • 1350
          • Finland
          #3
          Re: Audio SMPS cap tips?

          After a quick search, the Panny FC 1000uF / 50V for 1UKP a piece looks like a worthwhile choice...
          Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

            Comment

            • gonzo0815
              Badcaps Legend
              • Feb 2006
              • 1600
              #4
              Re: Audio SMPS cap tips?

              FC seems to be a perfect choice, even i would be inclined to use Pany FM.

                Comment

                • Krankshaft
                  Badcaps Legend
                  • Jan 2007
                  • 2328
                  • USA
                  #5
                  Re: Audio SMPS cap tips?

                  Guys check out the link of the supply the guy used Fukyuu caps for the line filter.

                  The secondary caps are Jamicon SKs which are general purpose not only that they are 85C rated. Not a good idea at all ALWAYS use low ESR 105C caps on the secondary filters.

                  Normally due to the turtle shell vents I would say that they are Hermei or another sketchy brand but the series SK in the rounded rectangular box gives them away as Jamicon since I have some lying around here.

                  Check the link for the datasheet to see for yourself.



                  Yes Panny FCs are perfect for PSUs, LCD monitors, and anywhere else where the high heat would cause problems for the more vulnerable aqueous lytics.

                  I believe Farnell carries the FC series.

                  As for the line filter cap you can use the Panasonic TS-HA, TS-HB, TS-HC, or TS-ED. I use them interchangably based on the size I need browse through the datasheets for the proper sizing.
                  Last edited by Krankshaft; 02-03-2008, 05:23 PM.
                  Elements of the past and the future combining to make something not quite as good as either.

                    Comment

                    • Khron
                      Badcaps Legend
                      • Sep 2006
                      • 1350
                      • Finland
                      #6
                      Re: Audio SMPS cap tips?

                      Even before i posted this here, i had gotten in contact with the guy. Among others, i did warn him about the output caps, but he said he has yet to have any negative experiences with that unit. Lucky fella, i suppose

                      PS: those are indeed Jamicons

                      I'm not yet sure precisely what input caps i'll be using, but i do recall having a pair of identical SMPS's out of who knows what old medical equipment, which, if memory serves me correctly, Nichicon 200V or 400V after the input rectifier.

                      Thanks for the assistance, anyway, guys
                      Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

                        Comment

                        • gonzo0815
                          Badcaps Legend
                          • Feb 2006
                          • 1600
                          #7
                          Re: Audio SMPS cap tips?

                          I think this unit can do well for some time with GP capacitors.
                          Due to the higher voltage, currents are not that high, and ripple requirements are about 0,7v, which is quite high.
                          Furthermore, he is using them in parallel configuration, which would lower the ESR by a factor of 2 to 3.

                          But sure, i would at least stick with Panasonic FC`s.

                            Comment

                            Previous template Next

                            Related Topics

                            Collapse
                            • samson7point1@yahoo.com
                              Help troubleshooting an audio problem with an RCA SGT-250 CED Player
                              by samson7point1@yahoo.com
                              The Problem: This player has a toggle switch to select between Stereo, Mono R, and Mono L. Regardless of the setting it outputs the sound to both the L&R audio jacks. In the Mono R position, the audio output level is normal (from both the L and R audio output jacks), in the Stereo position the audio output is about half the volume, and in Mono L, it's about 3/4 the volume. Something about putting it into Stereo mode is causing the volume to drop significantly and I can't figure it out.

                              The player processes the audio signal using two different reference frequencies. The "R"...
                              PW300S circuit diagram
                              2 Photos
                              04-30-2024, 11:22 AM
                            • i_am_patch
                              Roland KR-3500/4500 Digital Piano. Crackling audio sound on all keys -Fixed
                              by i_am_patch
                              Hi All. I had a Roland KR-3500 Digital Piano (similar to the KR-4500) that exhibited a Crackling audio sound on all keys. After reading somewhere about someone with a similar issue who had replaced all the Electrolytic caps I decided to also go down that route. (Spoiler : It worked !) After some basic troubleshooting I determined that it could be noise feeding thru from the Keyboard scanning since the Demo tunes played back undistorted and the Audio amp / speakers were fine ( Inserted an Audio signal into the rear Audio input). After extracting the main board from the shield, I replaced 7 Capacitors...
                              04-30-2024, 08:20 PM
                            • MOSSEP
                              Monitor Audio RSW12 - Green light but no audio
                              by MOSSEP
                              Hi

                              Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.

                              Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first ‘decent' bit of audio equipment I ever purchased and is a little sentimental.

                              The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.

                              I have already tried replacing all of the...
                              01-26-2025, 08:18 AM
                            • grimacelord
                              MacBook Air 2337 - Right I/O Board Audio IC - Alternative Replacement?
                              by grimacelord
                              Hello,

                              I'm working on a MacBook Air A2337 that had liquid damage on the right I/O board. I ultrasonic cleaned the board and it all functions except the computer has no audio. I tried reballing the audio IC which is TAS5770AC0, but that did not restore audio. I could just replace the entire board, but I wanted to see if replacing the audio IC would fix it first. Mouser has a similar audio IC in stock which is TAS5770LC0YFFR, but I wasn't sure if it is compatible. I was just wondering if anyone knew if I could use the one from mouser as an acceptable replacement or if I need to purchase...
                              12-11-2023, 11:13 AM
                            • chbalnuweit
                              HP 840 G5 Shorted Audio IC
                              by chbalnuweit
                              Hi all,

                              so I made a stupid mistake and dropped a screw onto the motherboard while assembling it.
                              The screw fell right onto the battery connector area and unforunately managed to short one of the supply voltage lines of the Audio IC (Conexanct CX 7750) without me noticing at first.

                              After the assembly and booting Windows I noticed that there was no sound and no Audio IC detected in device manager...

                              I got the motherboard out again and found the Audio IC with a crater in it...
                              Luckily I got a donor board with the same model motherboard....
                              11-19-2023, 12:12 PM
                            • Loading...
                            • No more items.
                            Working...