Cap selection - 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
Thread Tools Search this Thread
Old 19th January 2014, 09:32 AM   #1
diyAudio Member
Join Date: Jan 2014
Default Cap selection

Sorry if this is the wrong section. I am looking to upgrade the caps in the power supply se tion on my car audio sound processor. Tbe picture is below. The stock caps are jamicon tk The 3 larger caps are 1000uf 16v and the two smaller are 470uf 25v. Any advice is appreciated.

Click the image to open in full size.
  Reply With Quote
Old 19th January 2014, 10:26 AM   #2
diyAudio Member
Join Date: Jan 2014
Additionally in the audio path there is a bunch of smd caps. 4mm in size. Some are 22uf 16v and some are 10uf 16v. Any suggestions for them as well?
  Reply With Quote
Old 19th January 2014, 11:17 AM   #3
ishiru is offline ishiru  Indonesia
diyAudio Member
ishiru's Avatar
Join Date: Oct 2013
Location: Jakarta, ID - Nagasaki, JP
blackgates maybe?

there's a bucnh of good caps.BHC Aerovox, Panasonic FC, Nichicon Gold Tune, Sanyo OsCon, etc..

i usually use panasonic fc sInce they're low esr type and cheap enough

bypass them w/ some MKPs if you want..

for audio path, you might want to use oscon, silmic, cerafine, etc.for a smaller one like 1uF, or several nF i prefer MKPs or oils..

Last edited by ishiru; 19th January 2014 at 11:20 AM.
  Reply With Quote
Old 19th January 2014, 11:20 AM   #4
diyAudio Member
Join Date: Jan 2014
Cost is no option. Just need low esr. I want blackgate fk but they are too big.
  Reply With Quote
Old 19th January 2014, 11:24 AM   #5
diyAudio Member
Join Date: Jan 2014
For the main caps the max diameter is 10mm. Yeah i know, that sucks. It is a small board.
  Reply With Quote
Old 19th January 2014, 12:04 PM   #6
diyAudio Member
Join Date: Jan 2014
I take it the top 4 caps are the bypass caps?
  Reply With Quote
Old 19th January 2014, 12:11 PM   #7
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
The chip should all have local HF decoupling to each chip's power pins.
Groups of chips should all have nearly local MF decoupling to the chips supply rail/s.

Once that is attended to thoroughly, the PSU capacitors have little to do. They just recharge the HF and MF decoupling and supply the slower changing currents.
regards Andrew T.

Last edited by AndrewT; 19th January 2014 at 12:25 PM.
  Reply With Quote


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
Two electrolytic cap selection questions Captn Dave Tubes / Valves 6 9th March 2013 10:10 PM
series cap selection and voltage dougr Parts 1 10th November 2011 11:18 PM
Maths help -Output cap selection zebra100 Construction Tips 13 20th July 2010 10:54 PM
Input cap selection Deltat Parts 10 12th May 2006 03:54 PM

New To Site? Need Help?

All times are GMT. The time now is 11:17 AM.

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