10uF film capacitors on PSU?
I had a look at the BA specs and saw that the power supply is very similar to the F4/F5 units. The major difference is the 10uF film capacitor, placed parallel to the last electrolytic capacitor.
In the BA-1 article, Nelson wrote:
"You will also note 10 uF film capacitors across the supply lines. You can delete these, but remember that the prototype used them."
Has anyone tried this on an F4 (or F5)? If so, did it make a difference?
I was thinking of adding a Vishay MKP1839 10uF 160V on each rail for my F4's.
Does anyone have any experience with the MKP1839?
http://www.vishay.com/docs/26022/mkp1839.pdf
Thanks,
Albert
I had a look at the BA specs and saw that the power supply is very similar to the F4/F5 units. The major difference is the 10uF film capacitor, placed parallel to the last electrolytic capacitor.
In the BA-1 article, Nelson wrote:
"You will also note 10 uF film capacitors across the supply lines. You can delete these, but remember that the prototype used them."
Has anyone tried this on an F4 (or F5)? If so, did it make a difference?
I was thinking of adding a Vishay MKP1839 10uF 160V on each rail for my F4's.
Does anyone have any experience with the MKP1839?
http://www.vishay.com/docs/26022/mkp1839.pdf
Thanks,
Albert
Nice that's right. But not so much beautiful, than mine:
https://skydrive.live.com/?cid=e894cb7d50b65fbf#cid=E894CB7D50B65FBF&id=E894CB7D50B65FBF%21172
FQAs arrived
Hi buzzforb,
happy to tell you that the FQAs from Mike Rothacher arrived finally (German Custom
), next week I will try to match them at the F4 current and look what I can send you....
Hi buzzforb,
happy to tell you that the FQAs from Mike Rothacher arrived finally (German Custom
), next week I will try to match them at the F4 current and look what I can send you....
F4 PSU pictures
The F4's are coming along nicely. The PSU's are done and I thought I would post some pics of one half of the PSU.
We ended up using a CRC layout with point-to-point wiring:
The journey continues
The F4's are coming along nicely. The PSU's are done and I thought I would post some pics of one half of the PSU.
We ended up using a CRC layout with point-to-point wiring:
- 2 x 15000uF 63V Panasonic THA,
followed by - 4 x 0.47Ohm Panasonic 3W (parallel)
followed by - 2 x 15000uF 63V Panasonic THA
- 4 x 1000uF 35V Elan Silmic II
- 1 x 10uF 160V Vishay MKP1839
The journey continues
Attachments
The corresponding C1 is the 10uF from the frontend.
You know normally in F4 2 x 20uF would be sufficient but the 2 x 220uF are there to beware of the turn on and off plopp (as far as I know).
BA-has simply another distribution, the 10uF, this lower value makes a better foil cap possible for the signal path and the big 1000uF for the anti-plopp.
What I always wanted to know but never got an answer...... is this cap is also relevant for the sound.......?
You know normally in F4 2 x 20uF would be sufficient but the 2 x 220uF are there to beware of the turn on and off plopp (as far as I know).
BA-has simply another distribution, the 10uF, this lower value makes a better foil cap possible for the signal path and the big 1000uF for the anti-plopp.
What I always wanted to know but never got an answer...... is this cap is also relevant for the sound.......?
Sorry that I was not more clear from beginning......
I mean C101 used in BA-2 value 1000uf
In this circuit version http://www.diyaudio.com/forums/diyaudio-com-articles/194809-burning-amplifier-ba-3-a.html
I mean C101 used in BA-2 value 1000uf
In this circuit version http://www.diyaudio.com/forums/diyaudio-com-articles/194809-burning-amplifier-ba-3-a.html
