Best LM1875 Circuit? - Page 3 - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 12th October 2013, 08:44 PM   #21
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
Quote:
Originally Posted by AndrewT View Post
. . . A series impedance followed by a shunting capacitor can serve as a low pass filter. The voltage drop has nothing to do with the filtering action. The dynamic impedance of the diode to the applied frequency is what creates the impedance that is one half of that low pass filter.
Thank you! Yes, that explanation makes better sense.
Quote:
Originally Posted by gootee
Hey Daniel, Did you ever try taking the positive rail's decoupling caps to the negative rail instead of to ground (with the negative rail's decoupling still going to ground)?
Surprisingly, I haven't tried that one yet. Have you tried it?
I have tried a 4.7uF 250v electrolytic from rail to rail located at the power vias of the amplifier board.
Quote:
Originally Posted by riko4628
Is the output resistor 0.5 or 1W?
It could be convenient if your layout has spacing for a 1W resistor in the output RC.
Quote:
Originally Posted by riko4628
And second thing, is the 2u2 capacitor electrolytic? Do you mean 2,2uF Ceramic?
The input coupling cap is 2.2uF BP (or ordinary) electrolytic and you can add a small polyester dip cap (range 1n to 10n) to it if desired for treble qualities. Alternatively, a polyester 2.2uF can be used.
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  Reply With Quote
Old 12th October 2013, 08:56 PM   #22
diyAudio Member
 
Join Date: Sep 2013
Thank you so much Daniel
  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
Where to put a buffer circuit in this switching VU circuit I came up with? HiFi1972 Construction Tips 0 9th March 2013 04:55 PM
With painted a circuit, STI(2SK182E) pipe of the SRPP circuit, is feasible? lgqliu Solid State 2 25th February 2012 06:07 PM
More LM1875 questions(minimized circuit?) Adam M. Chip Amps 14 11th December 2011 12:22 PM
12V LM1875 circuit? bgee Chip Amps 9 29th April 2011 09:04 PM
Trouble with speaker protection circuit (Randy Slone's circuit) whalefat Solid State 3 13th April 2005 10:13 AM


New To Site? Need Help?

All times are GMT. The time now is 02:42 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