Audio Project Amplifier Speaker Loudspeaker Kit
diyAudio.com diyAudio Forums Archive > Top > Amplifiers > Pass Labs
 
matching of PSU caps usefull? - Click HERE for Original Thread
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? :confused:

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. :cannotbe: :)
Jaac TheMaster
quote:
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. :cannotbe: :)

soon is a great word :D 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
quote:
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. ;)

Page generated in 0.026588916778564 seconds with 17 queries,
spending 0.00852489 doing MySQL queries and 0.01806402 doing PHP things.

Powered by: Search Engine Indexer and vBulletin
Copyright ©1999-2009 diyAudio.com

Please support our sponsor.