4 pole electrolytic capacitors

[AGGEMAM]

I have a question for the more theoretically strong persons here.

Would it be a good idea to replace the C1-C4 and L1-L2 in the SOZ powersupply with two 4-pole electrolytic capacitors, why? why not?

 

[Nelson Pass]

What's a 4 pole electrolytic?

 

[AGGEMAM]

What's a 4 pole electrolytic?

It's explained in this link:

http://www.jensencapacitors.com/audio/products/electrolytic.html

It sure look like the perfect substitute ..

(note: You need to scroll down a bit)

Also check the white paper, here:

http://www.jensencapacitors.com/audio/white-papers/4pole.html

 

[Helix]

Four pole electrolytic capacitor - Four terminal electrolytics with superior high frequency transfer impedance and transient and noise attenuation/suppression capability. As the input and output circuits of the capacitor are decoupled from each other by means of an inherent filter formed inside the capacitor winding, transients and noises coming from the mains cannot pass through the capacitor and reach the primary signal path. The four pole electrolytic is the ultimate reservoir capacitor choice for switched mode and traditional power supplies.

The inputs and output are not decoupled from each other are they? don't they have direct connection with each other via the plates.

However it is a good idea to get the power running right the caps, but i think this has been done for AGES it's just that most people connect the two terminals together on the OUTSDIE of the cap too (and maybe deleteing any advantage). But if the foils are thin (which they are) would you want ALL the current flowing though it on a big pwer supply?

Food for thought, hmmmmm

 

[AGGEMAM]

The inputs and output are not decoupled from each other are they? don't they have direct connection with each other via the plates.

Not accordoing to the white paper.

However it is a good idea to get the power running right the caps, but i think this has been done for AGES it's just that most people connect the two terminals together on the OUTSDIE of the cap too (and maybe deleteing any advantage).

If you connect the inputs to the outputs, you just end up with a normal capacitor. If it is a normal capacitor you want, it is much cheaper to buy one those.

But if the foils are thin (which they are) would you want ALL the current flowing though it on a big power supply?

Well, the ones I was looking at were the axial type especially the 8200 uF 63 volt version, which has a rated pure AC load of 9,9 A @ 100 Hz, which is more than enough for a 25 watt SOZ, which demands about a third of that.

 

[nemestra]

T network capacitors

This reminds me of the work done by Denis Morecroft of DNM in the UK on 'T network' capacitors.

http://www.dnm.co.uk/

These are manufactured in the UK by BHC Aerovox.

http://www.bhc.co.uk/overview.htm


James

 

[angel]

Did anyone actually try building the SoZ with these four pole capacitors? If so, we'd all love to hear what the results were.

Also, are there high voltage (250V+) versions available?

 

[tiefbassuebertr]

NP: What's a 4 pole electrolytic?
It's explained in this link:
http://www.jensencapacitors.com/audio/products/electrolytic.html
It sure look like the perfect substitute ..
(note: You need to scroll down a bit)
Also check the white paper, here:
http://www.jensencapacitors.com/audio/white-papers/4pole.html

all links death. Here the currently weblinks:
https://audio.jensencapacitors.com/products/capelyt/elyt4paxia/
https://audio.jensencapacitors.com/products/capelyt/elyt4prad/

 

[tiefbassuebertr]

links from post 8 dead again - go to
https://web.archive.org/web/2002031...ncapacitors.com/audio/white-papers/4pole.html
additional URL's:
https://www.hificollective.co.uk/components/kemet-t-power.html
https://www.jimmyauw.com/2009/09/26/testing-the-jensen-4-pole-capacitor/
https://www.diyaudio.com/community/threads/kemet-alc10s-slit-foil-capacitors-any-good.362240/
https://www.diyaudio.com/community/threads/wanted-bhc-t-net-caps.87816/
https://www.diyaudio.com/community/threads/what-happen-to-thule-audio.126352/page-4 (post #62)
https://www.eevblog.com/forum/beginners/huge-price-difference-for-nearly-same-cap-why/
https://web.archive.org/web/2017010...h-elec.com.tw/electronic/ECAPS/DMN_design.htm

P.S.: I want to know, where are 4-pole caps with screw terminals currently available like to show in image from first attachment ?

 

[TungstenAudio]

https://partsconnexion.com/collections/electrolytic-4-pole

I have been uncertain about running high bias current through some of the four pole caps, but the high capacitance Mundorfs (15,000 uF & 22,000 uF) look like they could work.

 

[Michael C]

Define a good idea .what are your preferences and goals for using 4pole caps. You wont know the answere until your ears give you feedback. Give it ago. Diy is about trying new ideas. Theres no right or wrong.

 

[MEPER]

The reason why the links to Jensen Capacitors does not work anymore is because the factory is closed (Duelund took over some of Jensen equipment to be able to continue making foil capacitors (non-electrolytic)).
Jensen had some white papers / application notes. I found a couple (attached).
4-pole caps where made for PSU filtering. They have some advantages (e.g. low inductance). There are some technical information in the "jensen_nos_al....foil" document at the end of the document.