UCD "dc" & "on" - 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 25th October 2007, 01:26 PM   #1
diyAudio Member
 
Moby's Avatar
 
Join Date: Nov 2003
Location: Ghetto
Default UCD "dc" & "on"

I'm waiting for my UCD400 modules to arrive and in the meantime I searched a little about DC and ON circuits. Since I didn't found what I'm looking for I was thinking about this. It will be nice to hear comments about
Click the image to open in full size.
Shot at 2007-10-25
  Reply With Quote
Old 26th October 2007, 01:15 PM   #2
diyAudio Member
 
Moby's Avatar
 
Join Date: Nov 2003
Location: Ghetto
No comment? Bump
  Reply With Quote
Old 26th October 2007, 03:08 PM   #3
m-tech is offline m-tech  Serbia
diyAudio Member
 
Join Date: Feb 2006
Location: Belgrade
Jesi li siguran da ovo radi ? Nesto oko Q2 i Q3 mi deluje "sumnjivo" ( mozda negde fali masa ) ? Q3 bi trebao da ima otpornik u kolektoru ( isto kao i Q2 ).
Koja je uloga onih zener dioda ? Sa njima zastita reaguje pri dosta visokom DC naponu. A sta ako dodje 15-ak volti DC ? Zastita tada nece reagovati.

P.S.
Lakse je na srpskom.
  Reply With Quote
Old 26th October 2007, 03:36 PM   #4
diyAudio Member
 
Moby's Avatar
 
Join Date: Nov 2003
Location: Ghetto
Lakse je na Srpskom ali smo "izbacili" sve ostale iz teme. Let's switch to English
If I can trust in simulation, this circuit works. Dc threshold is arround 4V and zener are keeping base voltage so every voltage above 4v works like relay switch. I don't see any problem about transistors...Maybe I'm wrong, that's why I'm asking about comment.

P.S. M-tech oslobodi opciju za slanje e-maila, da ti kazem nesto privatno ili ti mene kontaktitraj
  Reply With Quote
Old 27th October 2007, 12:47 PM   #5
m-tech is offline m-tech  Serbia
diyAudio Member
 
Join Date: Feb 2006
Location: Belgrade
Those zeners are 2.3V ?
Q2 emitter ( and Q3 base ) should go to gnd.

Sada mozes da posaljes mail.
  Reply With Quote
Old 28th October 2007, 01:55 PM   #6
diyAudio Member
 
Moby's Avatar
 
Join Date: Nov 2003
Location: Ghetto
Quote:
Originally posted by m-tech
Those zeners are 2.3V ?
Q2 emitter ( and Q3 base ) should go to gnd.

Sada mozes da posaljes mail.
Zeners are 2.7V. Yes, I made a drawing mistake at Q3 base. Corrected... What about "on" circuit? I'm not sure what UCD module "expects" to be a trigger +5V?
Click the image to open in full size.
Shot at 2007-10-28
  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
What Does Fostex "Rated Input" and "Music Power" mark02131 Full Range 5 13th October 2012 05:18 AM
What makes an amplifier "bright", "warm", or "neutral"? JohnS Solid State 51 13th December 2009 06:42 PM
Charcoal "Supreem" hi-density foam "enclosure" IG81 Multi-Way 0 23rd April 2009 01:34 PM
Some final pics of "Stacks" revisited and "Askew" with stand Andy G Multi-Way 2 3rd February 2005 06:07 AM
Anyone used Scan-Speak's "Flow Resistors" or "Aperiodic Vents"? Ignite Multi-Way 3 18th November 2001 08:42 AM


New To Site? Need Help?

All times are GMT. The time now is 08:02 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