Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

how long does it take output capacitors to remember
how long does it take output capacitors to remember
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 24th January 2017, 04:09 PM   #1
dischoe is offline dischoe  Canada
diyAudio Member
 
Join Date: Sep 2016
Default how long does it take output capacitors to remember

I put an extra amp with superones on my TV output for time being. Its on with the main pretty much continuously, its logged about 3 months this way. Leaving it on never bothered me until cap memory got me wondering a little bit. About things like how long would it take patterns to form, does it happen to all output caps or just the cheaper ones, after it occurs how does it effect performance, in what way. And whatever I might be missing out.

Im guessing the amp might only be tapping 1/10th reserves 9/10 of the time unless cranking on some music or a movie.
  Reply With Quote
Old 24th January 2017, 04:44 PM   #2
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
Your fingerprints will probably stay there longer than you can remember.
__________________
regards Andrew T.
  Reply With Quote
Old 24th January 2017, 06:24 PM   #3
DF96 is offline DF96  England
diyAudio Member
 
Join Date: May 2007
I have no idea what the OP is talking about. He may be referring to the way that capacitors 'remember' the charge put into them by setting a voltage according to V=Q/C - but I suspect not. He may be referring to the way that an electrolytic will gradually adjust its oxide layer to achieve low leakage current, but only just, with the average applied voltage - but this is not usually called "cap memory". His last sentence makes even less sense than the rest of his post.

Could you try restating your question in normal technical English? Then we might be able to answer it.
  Reply With Quote
Old 24th January 2017, 06:40 PM   #4
vzaichenko is offline vzaichenko  Russian Federation
diyAudio Member
 
vzaichenko's Avatar
 
Join Date: Jan 2010
Location: Moscow, Russia
how long does it take output capacitors to remember
Dielectric absorption? This is what comes to my mind with regards to "cap memory" words combination...
__________________
If you can't explain it simply, you don't understand it well enough (c) Albert Einstein
http://vzaudio.com/
  Reply With Quote
Old 24th January 2017, 07:22 PM   #5
454Casull is offline 454Casull  Canada
diyAudio Member
 
Join Date: Jan 2004
Location: Toronto, ON, Canada
Capacitors aren't NiCad or NiMH batteries...
  Reply With Quote
Old 24th January 2017, 07:43 PM   #6
dischoe is offline dischoe  Canada
diyAudio Member
 
Join Date: Sep 2016
Quote:
Originally Posted by DF96 View Post
I have no idea what the OP is talking about. He may be referring to the way that capacitors 'remember' the charge put into them by setting a voltage according to V=Q/C - but I suspect not. He may be referring to the way that an electrolytic will gradually adjust its oxide layer to achieve low leakage current, but only just, with the average applied voltage - but this is not usually called "cap memory". His last sentence makes even less sense than the rest of his post.

Could you try restating your question in normal technical English? Then we might be able to answer it.


Haha very funny, or I could wish in one hand and crap in the other. By that I mean wait for someone to happen along familiar with that term

But seeing as the replies thus far have not conjugated any warm nice fuzzy feelings I think Ill try a different approach.

I started on a Roksan page, nice, fine, learning is fun. I linked here, then there finding myself inside an article containing that term and a vague description.

But wait, hold the phone. I knew my noggin could be useful, battery memory just bounced off it and now it makes some sense, or no sense BTW your post was helpful.

Battery memory, now that Im more familiar with.

When cells in batteries arent used regularly they become less effective at holding charge.

And how its important to fully charge a new rechargeable batteries in order to quench all the cells. Otherwise the the batteries "memory" will only allow it to charge back up to that point from then on.

Im not sure if any of that applies to capacitors, but that makes some sense to me now, or no sense at all. I went back to track down where I had read it, but came up empty. I was merely repeating what I had read and dont wish to try saying it any other way.
  Reply With Quote
Old 24th January 2017, 07:45 PM   #7
JMFahey is offline JMFahey  Argentina
diyAudio Member
 
JMFahey's Avatar
 
Join Date: Mar 2009
Location: Buenos Aires - Argentina
Bucket brigades, sample and hold circuits and .... grasp !!!! .... dynamic ***memories*** depend on capacitors to ***remember*** so ..... why wouldnīt a single capacitor remember too?

Conceptually itīs the same, isnīt it?
  Reply With Quote
Old 24th January 2017, 07:45 PM   #8
dischoe is offline dischoe  Canada
diyAudio Member
 
Join Date: Sep 2016
Quote:
Originally Posted by 454Casull View Post
Capacitors aren't NiCad or NiMH batteries...
Yes, thank you.
  Reply With Quote
Old 24th January 2017, 07:48 PM   #9
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
diyAudio Member
 
JonSnell Electronic's Avatar
 
Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
None of the above applies to capacitors as they are not made of Nickel Cadmium. Li batteries, like lead acid and Mh have no 'memory', they can take a charge at any point and any time, as will a capacitor.
Leave an electrolytic dead for a number of years and it must be re formed.
__________________
Support for Fender, Marshall and all Valve Equipment; Audio Innovations, Audiorama FU29, Quad and Leak. www.jonsnell.co.uk
  Reply With Quote
Old 24th January 2017, 07:49 PM   #10
TNT is offline TNT  Sweden
diyAudio Member
 
Join Date: Apr 2003
Location: Sweden
Maybe DF?

//
__________________
More distortion to the people!
  Reply With Quote

Reply


how long does it take output capacitors to rememberHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
High impedance balanced output: how long the cable? Alfetta87 Tubes / Valves 13 24th August 2010 05:45 PM
Output capacitors -=Zepplock=- Solid State 19 11th March 2005 04:31 PM
Long output lead or long output transistors leads? which one to pick? chris ma Everything Else 3 6th June 2003 12:06 PM
Capacitors in output? Lisandro_P Solid State 10 15th June 2001 09:24 AM


New To Site? Need Help?

All times are GMT. The time now is 11:37 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki