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

Class D Switching Power Amplifiers and Power D/A conversion

TPA3250 somebody is listening?
TPA3250 somebody is listening?
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 17th January 2019, 07:33 AM   #781
chermann is offline chermann  Austria
diyAudio Member
 
Join Date: Jan 2017
Location: Vienna
Quote:
Originally Posted by doctormord View Post
The IC shown there is a TPA3251 with thermal pad on top.
oh...
but its nevertheless a very good idea
  Reply With Quote
Old Yesterday, 08:44 AM   #782
Splkn is offline Splkn
diyAudio Member
 
Join Date: Nov 2018
Quote:
Originally Posted by chermann View Post
from post 775

so the tpa 3250 has a gain of 26db so with this opamps config i get about 33db so its 7db more gain


is that correct?

so the volume knob- potentiometer is a voltage divider for the input and the inverted opamp has a gain about 7db....correct?


which values should i find an the pcb to get this? can some fresh brain and expert help me?


thanks chris
On - forum.vegalab.ru they are engaged in the Hypex UcD amplifier and write:
«Completely excluded OU as well as WG. The signal is fed directly to the modulator. Gain is enough for comfortable listening directly from the source. The input impedance is not enough, but the output buffer of the source pumps. This option is more like.» They have an input impedance of the amplifier (modulator) of 10 kom, the TPA3250 has a resistance of 24 k per channel. Or 12kom with two channels connected in parallel.
  Reply With Quote
Old Yesterday, 09:49 AM   #783
chermann is offline chermann  Austria
diyAudio Member
 
Join Date: Jan 2017
Location: Vienna
Hi Splkn

First .....Thank you that you try to explain me ...but i didn´t get your point.
  Reply With Quote

Reply


TPA3250 somebody is listening?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
MPA 3250 Amp johnmik Solid State 17 14th October 2018 03:42 PM
RD Audio 3250.1 Deadly Sones Car Audio 1 10th July 2013 06:51 PM
RD Audio 3250 V2 S Merlington Car Audio 3 28th February 2013 06:55 PM
What are you listening to? MikeW Pass Labs 36 20th June 2011 02:54 AM
Denon DOA-3250 mike49504 Car Audio 2 12th November 2010 09:17 PM


New To Site? Need Help?

All times are GMT. The time now is 02:52 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki