Help me identify a transformer

maurycy · 9th June 2006, 12:44 AM

Hi,

I have a transformer that was pulled from working vintage Pioneer receiver (model SX-650). Unfortunately I have no idea what are its specs.

If anybody has any idea, without asking me to mess with the wires and electricity, on the specs, please let me know.

Trafo has the following numbers on it:

UT-1
ATT-303
0-BE11-XAU

Thanks,
Alex

ocool_15 · 9th June 2006, 02:14 AM

... how come you dont just hook it up and measure? you can get the VA rating off of the back of the amp....

AndrewT · 9th June 2006, 07:52 AM

Hi,
before you hook it up, connect each wire into a terminal block so you have no accidents.

Try to find the mains windings, nearest the middle usually.
If two then assume 110V each. If one, then arrange for 110V input until you KNOW for certain what it was built for (110V or 20V).

maurycy · 11th June 2006, 12:32 AM

I guess I can measure the output on the transformer. I am complete noob so I figured, I will ask the question here before trying to mess with electricity.

I have four wires on one side which I think are the mains. They are brown, white and two blue wires. I will try to connect the transformer and test the output.

Thanks.

AndrewT · 11th June 2006, 06:54 AM

Hi,
could the wires be blue and grey/violet?

Wire a mains light bulb in series with the primary of the transformer.

Just in case it is faulty or that you connect the two primary tappings out of phase.

When the primaries are connected out of phase, the transformer only has the primary resistance against the mains voltage and will draw many kilowatts before burning out due to very rapid overheating.

9th June 2006, 07:52 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, before you hook it up, connect each wire into a terminal block so you have no accidents. Try to find the mains windings, nearest the middle usually. If two then assume 110V each. If one, then arrange for 110V input until you KNOW for certain what it was built for (110V or 20V). __________________ regards Andrew T.

11th June 2006, 06:54 AM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, could the wires be blue and grey/violet? Wire a mains light bulb in series with the primary of the transformer. Just in case it is faulty or that you connect the two primary tappings out of phase. When the primaries are connected out of phase, the transformer only has the primary resistance against the mains voltage and will draw many kilowatts before burning out due to very rapid overheating. __________________ regards Andrew T.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Help identify toroidal transformer	ro345	Solid State	5	23rd January 2009 04:08 AM
Identify transformer VA, sec AV and amp	tankienbeng	Parts	6	27th August 2007 09:44 AM
Help Identify a Transformer	juan_caliente	Parts	10	9th June 2005 03:19 PM
Identify This....	EchoWars	Solid State	6	2nd August 2003 12:24 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

9th June 2006, 02:14 AM	#2
ocool_15 diyAudio Member Join Date: Nov 2004 Location: sk	... how come you dont just hook it up and measure? you can get the VA rating off of the back of the amp....

11th June 2006, 12:32 AM	#4
maurycy diyAudio Member Join Date: Dec 2005 Location: NJ	I guess I can measure the output on the transformer. I am complete noob so I figured, I will ask the question here before trying to mess with electricity. I have four wires on one side which I think are the mains. They are brown, white and two blue wires. I will try to connect the transformer and test the output. Thanks.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)