stupid newbie: what is this transformer??? - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 18th December 2007, 09:50 AM   #1
engels is offline engels  Israel
diyAudio Member
 
engels's Avatar
 
Join Date: Jan 2007
Location: Jerusalem, Israel
Question stupid newbie: what is this transformer???

sorry, but what this transformer is for?

Click the image to open in full size.
  Reply With Quote
Old 18th December 2007, 09:53 AM   #2
dnsey is offline dnsey  United Kingdom
diyAudio Member
 
Join Date: Mar 2004
Location: Shropshire, England
It's an impedence matching / isolating transformer. probably intended for telecomms equipment.
  Reply With Quote
Old 18th December 2007, 09:57 AM   #3
diyAudio Member
 
aletheian's Avatar
 
Join Date: Apr 2004
Location: Philly
Looks like an old line transformer. With a 30k primary it is probably a plate-to-line job.
__________________
Heghlu'meH QaQ jajvam!
  Reply With Quote
Old 18th December 2007, 10:06 AM   #4
engels is offline engels  Israel
diyAudio Member
 
engels's Avatar
 
Join Date: Jan 2007
Location: Jerusalem, Israel
Default recycle

could this thing be used as an audio output?

30K CT primary to 50 secondary gives me
4.8K CT to 8 ohms which is pretty classic. (PP of course)

But I wonder if this thing may take it and how much could it handle?
  Reply With Quote
Old 18th December 2007, 10:23 AM   #5
dnsey is offline dnsey  United Kingdom
diyAudio Member
 
Join Date: Mar 2004
Location: Shropshire, England
Note the 'max 8dB' spec (if I read it correctly). Not much good for O/P. You could use it for matching, say, a low impedence microphone to an input though.
  Reply With Quote
Old 18th December 2007, 12:30 PM   #6
diyAudio Member
 
Tom Bavis's Avatar
 
Join Date: Jun 2002
Location: Macedon NY
8 dBm = 6 milliwatts. That's one of the UTC "Ouncer" series.
  Reply With Quote
Old 18th December 2007, 01:14 PM   #7
RIP
 
pedroskova's Avatar
 
Join Date: Dec 2002
Location: C'ville VA, USA
reverse it...50 Ohm -> 30 kOhm for a mono MC cartridge input(?).
  Reply With Quote
Old 18th December 2007, 02:28 PM   #8
diyAudio Member
 
pmillett's Avatar
 
Join Date: May 2005
Location: Dallas (but I am not a Texan!)
This is a push-pull plate to line out transformer...

Catalog page:

http://www.bunkerofdoom.com/xfm/UTC_...56_14_0001.jpg

The O-series "ouncer" is pretty hi-fi. We used to use them in broadcast equipment where space wouldn't allow an "A" series...

I would think it would also make a decent mic input transformer, or maybe an MC stepup.

Pete
  Reply With Quote
Old 18th December 2007, 04:11 PM   #9
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
And it's worth some good money if you have one or a pair of them. Unless you are going to build a transformer coupled line stage you might consider selling it/them on eBay and applying the funds to something more suitable.
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  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
Stupid transformer question I should know but don't Boomy Power Supplies 2 25th August 2007 09:14 PM
3886 Transformer wiring stupid question thermonuclear Chip Amps 2 16th September 2005 05:38 PM
I know this is probably a really stupid newbie question,but.... Konnan101 Pass Labs 14 31st December 2003 10:12 PM
Stupid question: Where do you find the steel transformer plates... hoxuanduc Chip Amps 21 26th May 2003 08:52 PM


New To Site? Need Help?

All times are GMT. The time now is 03:31 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