Identify High Current Power Supply Transformer

[pinpassion]

Hi Gang,

I have a large and heavy power supply transformer
that is part of a high current power supply project
that was featured in 73 magazine back in 1973. It
was started by a ham radio operator and was never
finished. I am going to finish it, if I can. I am
trying to identify the transformer leads. This is
for a 12 volt, 40 to 60 amp output. Here are the markings:

This transformer was made by ADC and is marked 541-010 REV H.
There is a marking on it that says 3-19470 and what I think
is a date code of 7438. There are terminal connections on one
side that are numbered 1 - 6. On the other side the connections
are numbered 7 - 14. I need to know the connection scheme for
this transformer so I can put it to use. I contacted who I
thought was the manufacturer "ADC" for information, and that
did not help.

I don't have the issue of 73 magazine, and I don't even know
if this is the same transformer that may have been part of the
construction article. I can take pictures and post them if that
might help.

Anybody have any ideas?

Thanks a lot.

Mike

 

[[email protected]]

I need to know the connection scheme for this transformer so I can
put it to use.

For help on figuring out unknown transformers:

http://groups-beta.google.com/group...read/thread/6a594e9fd8bb4a00/3c9fffff00c587c3

http://groups-beta.google.com/group...read/thread/c3aca0be99f82432/63550f1c6f904ad8

I don't have the issue of 73 magazine, and I don't even know
if this is the same transformer that may have been part of the
construction article.

You might ask over in one of the rec.radio.amateur newsgroups (maybe
..equipment or .homebrew) - somebody over there might at least be able to
give you the info from the magazine article.

Matt Roberds

 

[Robert Baer]

Hi Gang,

I have a large and heavy power supply transformer
that is part of a high current power supply project
that was featured in 73 magazine back in 1973. It
was started by a ham radio operator and was never
finished. I am going to finish it, if I can. I am
trying to identify the transformer leads. This is
for a 12 volt, 40 to 60 amp output. Here are the markings:

This transformer was made by ADC and is marked 541-010 REV H.
There is a marking on it that says 3-19470 and what I think
is a date code of 7438. There are terminal connections on one
side that are numbered 1 - 6. On the other side the connections
are numbered 7 - 14. I need to know the connection scheme for
this transformer so I can put it to use. I contacted who I
thought was the manufacturer "ADC" for information, and that
did not help.

I don't have the issue of 73 magazine, and I don't even know
if this is the same transformer that may have been part of the
construction article. I can take pictures and post them if that
might help.

Anybody have any ideas?

Thanks a lot.

Mike

1) Ohm the leads out to identify windings and center-taps.
2) Use a 40 watt light bulb in series with thehighest resistance winding
to (partly) energize the transformer.
Measure the voltage across that "input" winding, and then of all of
the other windings (write the readings down).
This gives you the volrtage ratios between the windings, and will
give you a clue as to which one was to be the 115VAC primary.