matching of PSU caps usefull?

[Cr3ator]

Dear Pass Labs fans,

A few days ago I received my Panasonic 47000uF / 50V caps for my Aleph 5 project.



Now I'm wondering if it is useful to match them for each channel. The theory behind my question is that a difference in capacitance would result in a difference in rail-ripple voltage and thus an output distortion.

The PSU I plan to build will look like the picture below:



Am I totally wrong here or would this really make a difference?

Thank you in advance,

Erik

[Nelson Pass]

I wouldn't bother unless the ripple voltages on the
rails were really different.

[GRollins]

If you parallel enough pieces the variations in value will average out, anyway.

Grey

[Cr3ator]

First of all thats for your support. I'll see what happens when I connect them

Placing a lot of them in parallel is not an option (47.000uF remember?). But with a much smaller capacitance that would be an option.

Erik.

PS: I expect to publish my whole story and pics of my amp soon... Finaly after 1 year of thinking and searching for cheap components.

[Jaac]

Originally posted by Cr3ator
First of all thats for your support. I'll see what happens when I connect them

Placing a lot of them in parallel is not an option (47.000uF remember?). But with a much smaller capacitance that would be an option.

Erik.

PS: I expect to publish my whole story and pics of my amp soon... Finaly after 1 year of thinking and searching for cheap components.

soon is a great word for me i think

gr Jaac

[Alain Dupont]

Question: Could you tell where you bought these
Panasonic 47000uF / 50V

And also where to find these enclosures...

Alain.

[Cr3ator]

Originally posted by Alain Dupont
Question: Could you tell where you bought these
Panasonic 47000uF / 50V

And also where to find these enclosures...

Alain.

I bought the caps at Farnell.
They cost about €32,00 each.

I obtained the enclosure on the picture for free at the University of Twente, where I study Electrical Engeneering. It contained some RCL filters for experiments. A lot of old devices are thrown away these days. You don't hear me complaining about it.