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

Chip Amps Amplifiers based on integrated circuits

Another "can I use this transformer?" thread
Another "can I use this transformer?" thread
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 28th June 2012, 11:52 PM   #31
AudioSan is offline AudioSan  Norway
diyAudio Member
 
Join Date: Feb 2009
to check that. you can massure resistance from red to red. and from red to the solder point you think is the centertap solder(there you think you can desolder it). and see if the resistance is half of the resistance from red to red.
  Reply With Quote
Old 15th October 2012, 09:39 AM   #32
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Another "can I use this transformer?" thread
I have the same issue now
trying to remove a 120-220-240V mains selector switch
tricky, but with 3 voltages and only 4 wires I reckon it have to be one wire with taps

will try and see what happens if I remove a wire from the switch
  Reply With Quote
Old 15th October 2012, 09:56 AM   #33
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator
 
TonyTecson's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
Another "can I use this transformer?" thread
Quote:
Originally Posted by silver1omo View Post
I just realized that the PCB has markings on the mains.
Blue 0v
Brown 110v
Orange 240v
White 220v
Red 127v

So I'm guessing it is a multi-tap. I'll make a dim bulb tester and see what I get.

Thanks guys.
did you test with the leads disconnected to the board? if that is the case then the primary is easy, just use the blue and the orange wire and you're done...
__________________
planet10 needs your help: Let's help Ruth and Dave...http://www.diyaudio.com/forums/plane...ml#post5010547[B
  Reply With Quote
Old 15th October 2012, 10:38 AM   #34
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Another "can I use this transformer?" thread
ok, before cutting I measured 450ohm at 240V mains switch
after cutting the blue wire from selector, still measure 450ohm
and 220V is gone from selector
seem fine so far
Attached Images
File Type: jpg IMG_7778.JPG (140.9 KB, 32 views)
  Reply With Quote
Old 15th October 2012, 11:06 AM   #35
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Another "can I use this transformer?" thread
checking secondary voltage, and still 19-0-19V
cutting the red wire, and measure 450ohm on main switch
power on and voltage check
and still measure 19-0-19V
Attached Images
File Type: jpg IMG_7781.JPG (191.7 KB, 28 views)
  Reply With Quote
Old 15th October 2012, 12:48 PM   #36
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator
 
TonyTecson's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
Another "can I use this transformer?" thread
good job....
__________________
planet10 needs your help: Let's help Ruth and Dave...http://www.diyaudio.com/forums/plane...ml#post5010547[B
  Reply With Quote
Old 15th October 2012, 01:23 PM   #37
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Another "can I use this transformer?" thread
thanks
not so easy to find nice small trafos these days
  Reply With Quote

Reply


Another "can I use this transformer?" threadHide 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
diyAB Amp The "Honey Badger" build thread Variac Solid State 3058 14th June 2018 05:34 PM
SymAsym - "The Sequel", AAK's Rev_1.4 PCB Builders Thread AAK Solid State 161 19th December 2016 09:23 PM
SymAsym - "The Sequel", AAK's PCB Builders Thread AAK Solid State 225 7th September 2015 04:03 PM
a thread for "resto-mod" turntables...(administrators/moderators please read) Nanook Analogue Source 26 15th February 2012 12:19 AM
"compact loudspeaker factory visit from "magico mini" thread Nanook Multi-Way 2 4th January 2008 07:30 AM


New To Site? Need Help?

All times are GMT. The time now is 11:00 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