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 1st October 2013, 07:28 PM   #1701
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
I went through a similar struggle when transitioning from Siva's board to the FE - different PCB setup. Assuming the wire functions are correct, what about you developers using different size fastons for power inlets in future offerings? Pretty fail-safe with speaker pads.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."

Last edited by bcmbob; 1st October 2013 at 07:31 PM.
  Reply With Quote
Old 1st October 2013, 08:36 PM   #1702
diyAudio Member
 
Join Date: Mar 2013
Location: Worcs
Quote:
Originally Posted by troystg View Post
"..I may have interchanged PGND with AC1 or 2 in error and in haste.."

More likely an explanation as the boards are well proven and excellent.

But it still bites.. Sorry to hear.
Yeah think I'm gonna run with this as the most likely explanation for now Tbh I'm not too bothered about making mistakes as it's quite instructional so long as it don't cost me my health or my wallet too much, which it hasn't. I'm in it as much for the intellectual stimulus as much as for getting a decent sounding amp for a decent price!

Gonna concentrate now on getting my second board up and running properly with aforementioned changes to R1,R4,C13 and anything that springs to mind from various optimized BOMs around here. Per ardua ad astra as they say
  Reply With Quote
Old 1st October 2013, 08:41 PM   #1703
diyAudio Member
 
Join Date: Mar 2013
Location: Worcs
Quote:
Originally Posted by bcmbob View Post
I went through a similar struggle when transitioning from Siva's board to the FE - different PCB setup. Assuming the wire functions are correct, what about you developers using different size fastons for power inlets in future offerings? Pretty fail-safe with speaker pads.
FE = Fremen Edition, Bob?
  Reply With Quote
Old 1st October 2013, 08:55 PM   #1704
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
Yes, You can read about it in the posts before and after THIS ONE.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."

Last edited by bcmbob; 1st October 2013 at 08:58 PM.
  Reply With Quote
Old 1st October 2013, 10:13 PM   #1705
diyAudio Member
 
Join Date: Mar 2013
Location: Worcs
Quote:
Originally Posted by bcmbob View Post
Yes, You can read about it in the posts before and after THIS ONE.
Fantastic. That's a bookmark in my browser for sure. Always good to gain from another's struggles. The layout of your pics at post 155 in that thread is precisely what us newbs need to see. I was happy also to confirm from the phasing tutorial that my traffo is indeed in phase.
  Reply With Quote
Old 1st October 2013, 10:31 PM   #1706
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  Reply With Quote
Old 2nd October 2013, 01:06 AM   #1707
diyAudio Member
 
Join Date: Mar 2013
Location: Worcs
Just so I'm absolutely clear if I join black and yellow on my traffo pictured it's in phase yes?
Attached Images
File Type: jpg DSC_0017.jpg (766.7 KB, 154 views)
  Reply With Quote
Old 2nd October 2013, 01:14 AM   #1708
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
It's not just the colors that matter. You need a meter or continuity tester to determine which wires to select. A Pair of wires that makes the meter beep/light up is considered in my words -a circuit. Once identified I usually mark both of those with a black magic marker, tape or colored heatshrink tubing. Then check the other two to confirm continuity in that second pair. The psudo-CT is made from combining one wire from each pair. I'd feel really shaky trying to do it with colors only.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."

Last edited by bcmbob; 2nd October 2013 at 01:17 AM.
  Reply With Quote
Old 2nd October 2013, 01:24 AM   #1709
diyAudio Member
 
Join Date: Mar 2013
Location: Worcs
Quote:
Originally Posted by bcmbob View Post
It's not just the colors that matter. You need a meter or continuity tester to determine which wires to select. A Pair of wires that makes the meter beep/light up is considered in my words -a circuit. Once identified I usually mark both of those with a black magic marker, tape or colored heatshrink tubing. Then check the other two to confirm continuity in that second pair. The psudo-CT is made from combining one wire from each pair. I'd feel really shaky trying to do it with colors only.
Well blow me. I've only ever worked with properly labelled traffos and always laboured under the assumption that the second of the first pair of secondaries always joins to the first of the second pair and was in phase. DIY mags do that for you. I really should go and build the Decibel Dungeon bulb tester.
  Reply With Quote
Old 2nd October 2013, 01:32 AM   #1710
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
The bulb tester is essential (I have 3 styles), but I hope you are not confusing functions. The test I described can be done with that, but it's primary use is preventing damage at first power-up when the transformer is connected to an amp. A simple 1.5V flashlight battery and a bulb can be used as a continuity tester of you don't have a meter with that function.
Attached Images
File Type: jpg Untitled.jpg (5.9 KB, 137 views)
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."

Last edited by bcmbob; 2nd October 2013 at 01:35 AM.
  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
The "What slogan would you have if you were a high-end audio company?" Thread. Spasticteapot Everything Else 118 27th September 2011 03:31 AM
Original ECL86 "Baby Huey" thread jkeny Tubes / Valves 14 23rd November 2009 07:35 PM
"compact loudspeaker factory visit from "magico mini" thread Nanook Multi-Way 2 4th January 2008 07:30 AM
The "Really simple and cheap speaker designs for the newbie!" thread. Spasticteapot Multi-Way 5 19th March 2006 04:16 AM


New To Site? Need Help?

All times are GMT. The time now is 03:06 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