Quick Amp Capacitor Question - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 8th January 2013, 02:54 AM   #1
diyAudio Member
 
Join Date: Jan 2012
Location: port of spain
Send a message via Skype™ to sargesim
Question Quick Amp Capacitor Question

Greetings And Happy 2013 To All Hope Am Posting This Topic In The Right Place
Just Have A Quick Question I Want To Build A Amp From Scratch Am In The Process Of
Laying Out The Parts What I Will Like To Know Is If I Replace Picofarad Capacitors In The Circuit
With The Equivalent Nanofarad Value Capacitors Will It Cause A Problem For Example 1000PF = 1NF
Thanks for you quick reply.
  Reply With Quote
Old 8th January 2013, 03:08 AM   #2
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
No offense, but if you can't answer a question that simple, what hope do you have building an amp from scratch?
  Reply With Quote
Old 8th January 2013, 01:51 PM   #3
diyAudio Member
 
Join Date: Jan 2012
Location: port of spain
Send a message via Skype™ to sargesim
Default i Am not Designing my Own Amp

Am Using Schematics Found On The Internet I Know Replacing Picofarad Capacitors In The Circuit
With The Equivalent Nanofarad Value Capacitors The Amp Will Still Work All Am Asking For Is An
Expert Opinion As To If They Will Be Any Noticeable Difference In The Amps Performance No Offense
Theanonymous1 But If You're Not Going To Make A Positive Contribution Why Reply.
  Reply With Quote
Old 8th January 2013, 01:59 PM   #4
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007


Lets keep it friendly folks...
__________________
-------------------------------------------------------
A simulation free zone. Design it, build it, test it.
  Reply With Quote
Old 8th January 2013, 02:07 PM   #5
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
To answer your question it doesn't matter what units you use as long as the cap is the correct value and the correct type (where and if it matters).

So ordering either a 0.01uf or a 10nF or a 10000pf cap will all be the same. In the same way that a 100K resistor is the same as a 100,000 ohm resistor is the same as a 0.1Meg ohm resistor.

Does that help
__________________
-------------------------------------------------------
A simulation free zone. Design it, build it, test it.
  Reply With Quote
Old 8th January 2013, 02:45 PM   #6
diyAudio Member
 
Join Date: Jan 2012
Location: port of spain
Send a message via Skype™ to sargesim
Yes Thank You Very Much Mooly It Does.Can You Recommend The Best Low Power Audio Amp Chip
For Constructing A Portable Battery Operated Power Amp Under 12 Volts Dc
I Recently Bought A X Mini Portable Speaker With Built In Amp And Sd Card Reader
It Puts Out About 2 Watts Max And Sounds Really Great For Its Size Battery Life Is Good
Even When Played At Full Volume Am So Fascinated By It I Decide To Build One.Speaker
And Other Parts Wont Be A Problem Just Need To Choose The Right Amp It Needs To Be
Efficient As It Will Be Battery Powered And More Than 5 Watts Any Suggestions Thanks
  Reply With Quote
Old 8th January 2013, 05:01 PM   #7
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
I'm not too well up on what the current favourite low power amps low voltage amps are but you need to decide whether you want Class D or a conventional analogue chip type amp. If conventional then a bridge configuration will give more power from the low voltage. Class D should be more efficient (better battery life)
__________________
-------------------------------------------------------
A simulation free zone. Design it, build it, test it.
  Reply With Quote
Old 8th January 2013, 05:07 PM   #8
Bare is offline Bare  Canada
diyAudio Member
 
Join Date: Dec 2001
Location: vancouver
Cheaper to simply buy :-)
Try this:
YJ TA2020 20W 20W Class D Amplifier Board | eBay

It sounds surprisingly good, uses a 12v supply, Battery or otherwise and needs No immediate 'improvements'
  Reply With Quote
Old 8th January 2013, 10:19 PM   #9
diyAudio Member
 
cervelorider's Avatar
 
Join Date: Oct 2006
Location: Ohio
http://www.ebay.com/itm/2-X-8Watt-Cl...-/110932802369

Or this one. I've built many battery powered portable stereos with it.


Good Luck with your project!

Last edited by cervelorider; 8th January 2013 at 10:24 PM.
  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
Quick question on capacitor charge/discharge pete_schumacher Solid State 15 6th January 2013 07:56 PM
Quick capacitor question rocco gibralter Solid State 2 10th January 2009 01:20 PM
Quick Amp Question audiobahnkid592 Car Audio 5 12th November 2007 06:11 PM
Quick Leach Amp Question difflvl Solid State 6 5th November 2007 09:17 AM
Quick question about the output of my amp Turbo7MN Tubes / Valves 5 7th August 2006 07:11 PM


New To Site? Need Help?

All times are GMT. The time now is 04:12 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