BASIC CAPACITOR QUESTION - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 10th October 2013, 01:38 AM   #1
FNQ is offline FNQ  Australia
diyAudio Member
 
Join Date: Feb 2010
Default BASIC CAPACITOR QUESTION

Hey guys... 2 Questions... In old Yamaha organ power supply a 35v 2.2uf Tant is specified. This model organ is well known to need replacement of this particular cap. I'm not a techie so I can't say what this Tant's job is but I do have full factory schematics I can scan a page of if needed. So query is should I replace the 35v with a higher voltage Tant or what?
Secondly when I buy more 'lytics for same organ-instrument is choc FULL of 'lytic cap's btw..if retailer out of regular Cap's he told me he has some of the needed values in Non-Pola version and will be OK if installed instead of "regular electrolytic" ...Is this correct?
Will appreciate your input..Cheers.
  Reply With Quote
Old 10th October 2013, 07:04 AM   #2
diyAudio Member
 
Join Date: Mar 2011
Location: Berlin
1) Higher voltage is ok. Depending on the place of use, it could also be replaced with e-lytic
2) generally: e-lytic in Signal path can be replaced with non-polar. Elytics in PSU /decoupling don't need to.
  Reply With Quote
Old 10th October 2013, 09:49 AM   #3
diyAudio Member
 
ticktock's Avatar
 
Join Date: Dec 2006
Location: Old Anglia
Quote:
Originally Posted by FNQ View Post
So query is should I replace the 35v with a higher voltage Tant or what?
If reliabilty is a typical issue, higher voltage is preferable. Tantalums usually
don't suffer from aging though (if voltage is choosen sufficiently).


Quote:
Originally Posted by FNQ View Post
Secondly when I buy more 'lytics for same organ-instrument is choc FULL of 'lytic cap's btw..if retailer out of regular Cap's he told me he has some of the needed values in Non-Pola version and will be OK if installed instead of "regular electrolytic"
Again, higher voltage is better if there's enough space for the physical size.
Regarding bipolars, you need to know if the cap is in the signal path or just
filtering/buffering power. The schematic would help a lot. If signal path BP is
fine, if power supply it's not. Remember regular lytics aren't hard to get at all.
__________________
thank you papa !!
Blaue Leuchtdioden machen blöd. (hb)
quod licet iovi, non licet bovi
  Reply With Quote
Old 12th October 2013, 12:14 PM   #4
diyAudio Member
 
Refugee1's Avatar
 
Join Date: Jul 2012
Location: Worksop
Bipolar capacitors are far less reliable and sacrifice ESR and reliability for the bipolar feature. I would not use them in an audio path at all.
  Reply With Quote
Old 12th October 2013, 12:20 PM   #5
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
I don't think he is after better performance, just a reliable repair.

Tants in the signal path are a NO-NO in terms of audio quality but if you are just repairing like for like then the higher voltage devices are OK.

Tants DO NOT like voltage reversal. They tend to explode rather dramatically.

You can replace a tant with an electrolytic but their lifespan is generally shorter and they are usually bigger.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to measure capacitor with a basic digital multimeter? KimmoSWM Parts 17 23rd January 2014 10:44 AM
Very basic question... andalarct Full Range 17 17th May 2013 12:05 AM
Basic Question jrwalsh33 Instruments and Amps 7 11th October 2012 12:39 AM
really basic question cuallito Tubes / Valves 6 15th April 2004 08:25 PM
really basic question MbayAQ Digital Source 3 7th January 2003 12:57 PM


New To Site? Need Help?

All times are GMT. The time now is 06:24 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2