Best PSU Brand Caps for Goldmunds Clons

[Macpibe]

Hi,

I have acquired these Goldmund Clones, a Mimesis 27 Pre, and a SRA power. The pre was had a bad recap, any capacity and any brand of electrolytic capacitors .. The original Goldmund (there I put some photo) come with Phillips .. I made the recap of the SRA with what I could get at that time (Nichicon FW ). The Nichicon FW are sold for "audio" (like FG, KW, etc.) I don't know if they are the most appropriate in PS. The Nichicon that they sell for PSUs are the PWs, but they figure that they are for Switching Power Supplies .. Am I confused here .. Low ESR? high ESR here? Would it be the same situation in the PSU recap of the Mimesis Preamp? I was thinking of Vishay BC for everything, but I don't get some values in radial capacitors in DigiKey ... Thanks for your suggestions.

 

[Mark Tillotson]

105C rated low ESR for a PSU every time unless the budget prevents it. But every capacitor sold is tagged as "low ESR" ... The inadequacy of adjectives to describe components!


Main filter caps need their full-load ripple current calculated and replacements need to be able to handle that without undue stress.

 

[UltimateX86]

Hi

Do you have the schematic for the SRA ? Thanks

Nichicon gold or Elna silmic for axial are good, but I never use radial

 

[Macpibe]

Hi UltimateX86 . I could never find a SRA schematic.

 

[Macpibe]

105C rated low ESR for a PSU every time unless the budget prevents it. But every capacitor sold is tagged as "low ESR" ... The inadequacy of adjectives to describe components!



Thanks Mark.
But my doubt is, the capacitors todays sold for PSU (Nichicon PW, for example), say "Low lmpedance, High Reliability For Switching Power Supplies". This would be for high frequencies, not 50/60 Hz., as I needed here?

 

[UltimateX86]

maybe you should use KG or KW

 

[UltimateX86]

the PW have more Ripple Current for some value

http://products.nichicon.co.jp/en/pdf/XJA043/e-kw.pdf
https://www.nichicon.co.jp/english/products/pdf/e-kg.pdf
http://products.nichicon.co.jp/en/pdf/XJA043/e-pw.pdf


PW : current on 105˚C / 100kHz and 0.75 ratio for 120hz
KG and KW : 85°C 120Hz

what is the value do you need, max size and lead spacing ?

 

[Macpibe]

the PW have more Ripple Current for some value

http://products.nichicon.co.jp/en/pdf/XJA043/e-kw.pdf
https://www.nichicon.co.jp/english/products/pdf/e-kg.pdf
http://products.nichicon.co.jp/en/pdf/XJA043/e-pw.pdf


PW : current on 105˚C / 100kHz and 0.75 ratio for 120hz
KG and KW : 85°C 120Hz

what is the value do you need, max size and lead spacing ?

In the case of the SRA, as you can see in the photo as they entered, there was no place for some Nichicon PW .. In the case of Pre Mimesis, there is no size problem. The values would be 1000uf / 100 v., And 2200uf / 25v. for the pre, and 2200uf / 50v. and 100uf / 50 for the SRA.