"The Wire AMP" Class A/AB Power Amplifier based on the LME49830 with Lateral Mosfets - Page 191 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 6th August 2012, 11:27 AM   #1901
AP2 is offline AP2  Italy
Banned
 
Join Date: Dec 2009
Location: Italy
Hi,
well, we are near...switch-on.
Kiwi & NicMac...please,confirm package.
@Arthur: caps 1206 arrived today.
  Reply With Quote
Old 6th August 2012, 11:42 AM   #1902
kiwik is offline kiwik  Estonia
diyAudio Member
 
Join Date: Nov 2011
Quote:
Originally Posted by AP2 View Post
Hi,
well, we are near...switch-on.
Kiwi & NicMac...please,confirm package.
@Arthur: caps 1206 arrived today.
Still waiting, package should arrive tomorrow
Will let know asap.
  Reply With Quote
Old 6th August 2012, 06:58 PM   #1903
AndrewT is online now AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by qusp View Post
............. that Andrew T has given up DIY, he doesn't seem to have posted anywhere for weeks
AndrewT is back. I have been away on extended holiday.
Starting to catch up with the post and the Email and the DIYaudio.

Got my first build playing music for about 6hrs yesterday.
It did not blow up. The noise performance is not brilliant, it does not measure <0.1mVac, it varies from 0.1mVac to 0.2mVac, the tiny oscillation I reported is still there.
I have almost finished the second build. I will test it and then repeat testing with the 0r0 for R54, instead of the 10r I used in build one.

Build one has a tiny bit of hum audible at the speaker, but inaudible at the listening seat. That hum will be the poor noise that I measured. And could be caused by "my 10r" for r54.

More when I get build two finished.

I have been studying the PCB to see what the input traces do.
I see three connections on the schematic for "OUT 1".
I can find two PCB traces connected to PIN8 (going to R43 and then on to R48). The third trace appears to stop at at plated through hole that is not connected on the reverse side. I cannot see a connection from SPKR + to the feedback path @ pin8.
Similarly, I cannot see a connection to the second side of the mute switch pair.
Can OPC, or anybody, show where these "connections" have gone?

Are the INPUT labels + & - swapped?
__________________
regards Andrew T.
  Reply With Quote
Old 7th August 2012, 10:27 AM   #1904
kiwik is offline kiwik  Estonia
diyAudio Member
 
Join Date: Nov 2011
Quote:
Originally Posted by AP2 View Post
Hi,
well, we are near...switch-on.
Kiwi & NicMac...please,confirm package.
@Arthur: caps 1206 arrived today.
Package received, thanks Roberto!

wb Margus
  Reply With Quote
Old 7th August 2012, 12:05 PM   #1905
diyAudio Member
 
Join Date: Oct 2011
Location: North West, UK
Blog Entries: 7
Quote:
Originally Posted by AndrewT View Post
AndrewT is back...

I have been studying the PCB to see what the input traces do.
I see three connections on the schematic for "OUT 1".
I can find two PCB traces connected to PIN8 (going to R43 and then on to R48). The third trace appears to stop at at plated through hole that is not connected on the reverse side. I cannot see a connection from SPKR + to the feedback path @ pin8.
Similarly, I cannot see a connection to the second side of the mute switch pair.
Can OPC, or anybody, show where these "connections" have gone?

Are the INPUT labels + & - swapped?
Hi AndrewT, hope your vacation was enjoyable

Gotta remember the pcb is more than 2 layers, so there will be a few traces hidden away in the center layer... I can visibly see two traces from pin 8, one connecting to R39 (bottom layer), the other running toward SPKR+ (mid Layer) & can see a mid layer trace coming from SPKR+. From -input you should be able to follow the traces through C76 to R43, a Via to R39, R39 connects to Pin 5 & Pin 8, Pin 8 connects to SPKR+...

R48 is the OR jumper on the +input, so shouldn't be connected to the feedback path in any way...

If you backlight the pcb it makes it easier to see some of the mid-layer traces...

Paul.
__________________
Listening with Gusto!

Last edited by BuildMeSomething; 7th August 2012 at 12:11 PM.
  Reply With Quote
Old 7th August 2012, 04:59 PM   #1906
AndrewT is online now AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Thanks BMS, I can see a buried "something" emanating from SPKR+ towards the middle of the PCB. Yes, R39&Pin8 have continuity to SPKR+.
Yes, Mute switch has continuity to Pin2.
That extra layer/s confirms where the "allegedly missing" connections have gone.
From post1
Quote:
The PCB will be a 3 layer design
__________________
regards Andrew T.
  Reply With Quote
Old 3rd September 2012, 06:19 PM   #1907
AP2 is offline AP2  Italy
Banned
 
Join Date: Dec 2009
Location: Italy
Hello, you're still in the sea?
no heard a DPS-600 with Wire-Amp?
I have some new info.

Since the DPS-500 has a power unit very expensive, I thought that it is possible to mount the same power unit of the DPS-600 (do not need to make changes), so the difference is in the use 115VAC/230VAC with a small increase power, thanks to the cell filtering slightly larger.
This allows me to offer the DPS-500-WA with only +15 € difference.
Obvious that the original version is available (such as those that I'm sending to Owen for the test and measurement).
That's all for now.

I know well that the monetary crisis has spread out from Europe, so is not easy, spending money on unimportant things.
but if someone needs a good power supply for audio,with new performances on audio transient, this is the right one
Regards
Roberto
Attached Images
File Type: jpg DPS-500-WA.jpg (34.9 KB, 535 views)
File Type: jpg DPS-500-WA-2.jpg (32.2 KB, 526 views)

Last edited by AP2; 3rd September 2012 at 06:27 PM.
  Reply With Quote
Old 3rd September 2012, 06:24 PM   #1908
AP2 is offline AP2  Italy
Banned
 
Join Date: Dec 2009
Location: Italy
dimensions are slightly larger than the DPS-600.
198mm x 84mm; total height 32mm.
  Reply With Quote
Old 4th September 2012, 01:17 PM   #1909
AP2 is offline AP2  Italy
Banned
 
Join Date: Dec 2009
Location: Italy
Original version "S" for WA.

This version can supply up to two amps (if AB class) up to 2x300W rms or
2x500w in case of D Class.
however, can provide repetitive peak power (33/66ms) of 1kw without fan.
sag voltage is around 2.7-3V, also (this power supply have two feedback) to get a very fast reset time. (load on one rail, not unbalanced the other side).
--------------------------------------------
right for clarity. than the version not "S", changes the transformer and all components within the Power-Unit. the electronic circuit is identical

regards
Attached Images
File Type: jpg DPS-500-S-WA.jpg (32.5 KB, 485 views)

Last edited by AP2; 4th September 2012 at 01:28 PM.
  Reply With Quote
Old 11th September 2012, 04:57 PM   #1910
diyAudio Member
 
Join Date: Aug 2011
I'm officially throwing in the towel on this project. If anyone is interested in 2 pairs of never-soldered MOSFETs and 2 unused PCBs (well, I think I have two...though I can't find one at the moment), please let me know.

I have one nearly-completed board (except for MOSFETs) that I would be willing to sell too, but of course, no warranty!

PM me for inquiries.
  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
Marriage from "ZEN" - and ordinary class AB topology about HCA - why not realized ?? tiefbassuebertr Pass Labs 2 4th January 2014 05:52 PM
X-Amp (LME49830 + Exicon Lateral Mosfets) danfo098 Chip Amps 28 14th October 2013 05:05 AM
"CA-10", new Single Ended Power amp Device based on Aleph or ZEN ? tiefbassuebertr Pass Labs 1 29th September 2010 07:55 PM
Compound Lateral FET for higher power Class AB amp. Mooly Solid State 17 22nd August 2010 03:13 PM
Improvments to "Tube Headphone Amplifier/Preamp with Relay-Based Input and Power Swi" kipman725 Headphone Systems 4 17th August 2009 07:12 PM


New To Site? Need Help?

All times are GMT. The time now is 12:55 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