MyRef Integrated Solutions - Page 15 - 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 11th April 2012, 06:20 PM   #141
diyAudio Member
 
regiregi22's Avatar
 
Join Date: May 2009
Location: Madrid (Spain)
Quote:
Originally Posted by squalor View Post
I also remember Uriah suggesting to you to add caps at the input to keep the LDR powered while the amp turns off. I don't remember the value.
As high as you could I took a pair of big caps from an old PSU. Be aware that they may only be rated at 5v, so they keep a good ratio of size/capacitance. So, I used something like 2x 12.000uF in parallel, and each one was the size of half a cigarrette. Just a thumb rule, take any "big" cap from an old psu/computer/electronics and you're done. Switching PSUs use to have tons of them inside.


[QUOTE=squalor;2981442
This is the first time I built without a printed circuit. I hoped someone could comment on the pic of my solder joints but realize now the pic is too grainy. I will remove 499R and try to post a clearer pic.[/QUOTE]
It may look good, but as you said, picture isn't clear enought to make an opinion.

Best regards,
Regi
__________________
diyAudio, doing it as big as you can, JUST BECAUSE WE CAN!
  Reply With Quote
Old 11th April 2012, 07:44 PM   #142
squalor is offline squalor  United States
diyAudio Member
 
squalor's Avatar
 
Join Date: May 2005
Location: Redneck Riviera
A few questions please. Does the Pin1 dot on LM338 correspond to IN on the schematic ? Does the arrow and line on D1 indicate the direction the stripe on the diode goes ?
  Reply With Quote
Old 12th April 2012, 10:22 AM   #143
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
diode orientation:
The bar on the diode corresponds to the bar on the symbol and also indicates the - sign/side of the diode.
The arrow of the symbol indicates conventional current flow. The bar will be towards -ve for current to flow.
__________________
regards Andrew T.
  Reply With Quote
Old 12th April 2012, 04:20 PM   #144
diyAudio Member
 
regiregi22's Avatar
 
Join Date: May 2009
Location: Madrid (Spain)
Quote:
Originally Posted by squalor View Post
Does the arrow and line on D1 indicate the direction the stripe on the diode goes ?
Yes.

Regarding LM3386 pinout, you can check it out on the datasheet, first page:
http://www.ti.com/lit/ds/symlink/lm138.pdf
__________________
diyAudio, doing it as big as you can, JUST BECAUSE WE CAN!
  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
WTB myref rev c amp anonomouse Swap Meet 1 26th July 2011 02:34 PM
MyRef-C BOM Consolidation PLEASE bcmbob Chip Amps 3 24th September 2010 12:45 AM
MyRef C parts for sale madisonears Swap Meet 2 18th August 2010 06:06 PM
MyRef Rev C or Amp 5? preiter Chip Amps 2 30th January 2007 07:28 PM
Troubleshooting the LM3886 MyRef Groundloops Chip Amps 3 1st April 2006 09:21 AM


New To Site? Need Help?

All times are GMT. The time now is 01:18 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