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

Dx Supply, output adjustable, stabilized power supply
Dx Supply, output adjustable, stabilized power supply
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 11th October 2013, 08:19 PM   #181
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
diyAudio Member
 
vargasmongo3435's Avatar
 
Join Date: May 2011
Location: Quebradillas, Puerto Rico
Send a message via Yahoo to vargasmongo3435
Mister Terry have you seen mister Carlos videos? he operate Dx Super A with AA batteries

I mean this does not mean that your are going to do it, he is just showing that Dx Super A can operate at that minimum supply voltage

Audio amp. powered by Triple A batteries - Amp. movido pilha - YouTube

I did it too with a small transformer and it even operates too meaning there is a lot options but fallow mister Carlos suggestions

Regards
Juan
__________________
audio fanatic only

Last edited by vargasmongo3435; 11th October 2013 at 08:28 PM. Reason: grammar error
  Reply With Quote
Old 11th October 2013, 11:48 PM   #182
still4given is offline still4given  United States
diyAudio Member
 
still4given's Avatar
 
Join Date: Oct 2004
Location: Victorville, CA
Dx Supply, output adjustable, stabilized power supply
I just wondered because he said the power supply needed to be able to sustain a 10A load. I don't plan to be anywhere near that.

Thanks, Terry
  Reply With Quote
Old 12th October 2013, 01:26 AM   #183
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
diyAudio Member
 
vargasmongo3435's Avatar
 
Join Date: May 2011
Location: Quebradillas, Puerto Rico
Send a message via Yahoo to vargasmongo3435
ohooo I see mister Terry the idea of the regulator is to keep a constant and steady power a reservoir when power is need it, I was checking a few minutes ago and the power consumption playing soft music is about 327mA (330mA) on the positive rail the regulator should be just right.

Regards
Juan
__________________
audio fanatic only

Last edited by vargasmongo3435; 12th October 2013 at 01:33 AM.
  Reply With Quote
Old 24th October 2013, 08:00 AM   #184
destroyer X is offline destroyer X  Brazil
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Juan Vargas new email adress is

juanvargasdiaz1970@yahoo.com

In this year, when Juanito born, i was already in the army.

Young Juanito.

Carlos
Attached Images
File Type: jpg Army.jpg (543.0 KB, 480 views)
__________________
Dx unbeatable amplifiers; https://www.youtube.com/watch?v=u4tGBiqMnzQ
  Reply With Quote
Old 24th October 2013, 04:14 PM   #185
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
diyAudio Member
 
vargasmongo3435's Avatar
 
Join Date: May 2011
Location: Quebradillas, Puerto Rico
Send a message via Yahoo to vargasmongo3435
Then in 2005 I join the Army later 2 deployments to Iraq, I never going to forget, thanks battle buddy

Regards
Juan
__________________
audio fanatic only
  Reply With Quote
Old 20th November 2013, 11:02 AM   #186
destroyer X is offline destroyer X  Brazil
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Dx Supply is included in the package.... Juan have amplifier pcboards

And also power supply pcboards.

This is good to clarify.

Also the Dx Supply can be used together other amplifiers, the output voltage is adjustable.

regards,

Carlos
__________________
Dx unbeatable amplifiers; https://www.youtube.com/watch?v=u4tGBiqMnzQ
  Reply With Quote
Old 23rd November 2013, 10:02 PM   #187
still4given is offline still4given  United States
diyAudio Member
 
still4given's Avatar
 
Join Date: Oct 2004
Location: Victorville, CA
Dx Supply, output adjustable, stabilized power supply
Hi Guys,

I have been using my DX Supply with an SKA GB150. I am using a 40-0-40VAC transformer and dialing it down to +/-50vDC rails. It is feeding both channels which are set to 250mA per rail each. I had fairly large heatsinks installed on the supply but they never even got warm to the touch. I wanted to reduce the size to make it easier to install in the case I am building for the SKA so I remove the heatsinks and just cut some pieces of 1/4" x 2-1/2" x 6" aluminum bar and attached them to the MJL21193(PNP) MJL21194(NPN) outputs. They still barely get warm to the touch even after prolonged playing. So I am curious, what does it take for the outputs to need large heatsinking, Class A?

Thanks, Terry
  Reply With Quote
Old 23rd November 2013, 10:57 PM   #188
Ranchu32 is offline Ranchu32  Australia
diyAudio Member
 
Join Date: Apr 2013
Terry, try a sinewave into a dummy load at moderate to high power. If the pass transistors don't get warm/hot after 10 minutes I'd be suprised and suspect something amiss.
  Reply With Quote
Old 23rd November 2013, 11:00 PM   #189
still4given is offline still4given  United States
diyAudio Member
 
still4given's Avatar
 
Join Date: Oct 2004
Location: Victorville, CA
Dx Supply, output adjustable, stabilized power supply
How do you play a sine wave through a power supply?
  Reply With Quote
Old 23rd November 2013, 11:10 PM   #190
Ranchu32 is offline Ranchu32  Australia
diyAudio Member
 
Join Date: Apr 2013
I'm suggesting you play a sinewave through the amplifier connected to the power supply to generate sufficient current draw through the pass transistors in your power supply. If you are playing music at normal levels through a medium power Class A/B amplifier, and the quiescent current in the normal range, then the average power draw is going to be low. If you want to see the pass transistors' heatsinks get hot to confirm proper operation, then play the music really really loud or drive the current into a dummy load.
  Reply With Quote

Reply


Dx Supply, output adjustable, stabilized power supplyHide 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
Adjustable power supply questions rendisha Parts 28 10th June 2013 10:57 AM
Adjustable High Voltage Power Supply alfa88 Equipment & Tools 7 8th January 2012 12:33 PM
Adjustable Regulated B+ power supply question Captn Dave Power Supplies 9 21st October 2009 06:13 AM
Adjustable regulated power supply Ford_V6 Solid State 2 1st April 2003 06:03 PM
DIY - Adjustable Power Supply Design vinay Pass Labs 7 20th March 2002 06:46 PM


New To Site? Need Help?

All times are GMT. The time now is 08:05 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki