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

120V to 240V internally
120V to 240V internally
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 8th December 2017, 09:02 AM   #21
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by armarra1 View Post
So glad to hear you say that but puzzled as to why.


there are primary pins identified by

6 5 and 3.

5 says neutral on the board.
3 says live on the board.

the spare is 6 and says nothing.


3-5 is 35.6 ohms. 110volt power plug connected across 3 and 5.
3-6 is 35.6 ohms.
5-6 is 1 ohm.

also my multimeter leads say 1 ohm when I short them together.
I have to admit this does not make sense to me.

Have you built your MBT yet?

Do you have, or can borrow, a 230:115Vac transformer?
__________________
regards Andrew T.
  Reply With Quote
Old 8th December 2017, 09:18 AM   #22
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
What is the model? Can you find a schematic? As JMFahey says, please copy what is says in the manual. Also, check your meter is working correctly and the measurements across the primary wires
__________________
Woofer Assisted Wideband is the New Testament renounce the anachronistic acronym FAST
  Reply With Quote
Old 8th December 2017, 07:45 PM   #23
PRR is offline PRR  United States
diyAudio Member
 
PRR's Avatar
 
Join Date: Jun 2003
Location: Maine USA
Quote:
Originally Posted by armarra1 View Post
...my caution and protracted enquiries is warranted......
Yes, but --- you have given NO CLUE what "USA cassette deck" this is. No brand, no model number, and no copies of whatever images and instructions you have.

Even knowing the BRAND might be helpful. Maybe someone has dealt with a lot of Brand X and knows their tapping-system.

With _NO_ real information, you have a fair chance of wiring two 120V windings (if that is what they are) out-of-phase, which will tend to burn-up your house (hopefully blow the circuit fuse before the line-cord starts to burn).

Even once we get the voltage, there is a further trouble-spot. Many cassette decks used DC or servo motors which do not care what the line frequency is. But a very few used AC motors which run at Line Frequency. A 60Hz motor on 50Hz power will run at 50/60 or 83% speed, several semi-tones flat, a 3 minute song takes 3:36 to finish. There is no simple fix for this. (You can bush the pulley and other tricks, but not easy to get right.)
  Reply With Quote

Reply


120V to 240V internallyHide 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
120v or 240v For XA160.5? Chris C Solid State 2 22nd November 2010 11:02 PM
120v/240v amplifiers dsiroky Solid State 1 25th September 2008 12:58 PM
Spacedeck 240V to 120V lt_texan Analogue Source 3 10th December 2007 03:41 AM
Two 120V transformers in series for 240V ? Bernhard Power Supplies 8 22nd November 2005 01:28 AM
toroid rewiring from 240v to 120v pjb Parts 3 22nd February 2004 02:28 PM


New To Site? Need Help?

All times are GMT. The time now is 08:06 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki