unknown transformer

Hi to all. I find few days ago an old transformer (old for me) looking on some of my fader's things. He dont knows exactly what is it. He say me that its for a mic input. There are some numbers printed on capsule and it has 5 terminals with some sort of glass (insulation?). The printed letters are: TS2434 and 1/55.
I can read 30 (aprox) ohms from 3-5pins and 4-5 ... 3 ohms 3-4 and finally 1k on 1-2 pins... with a multimeter, no Z...
I have pics of it, but i cant post here i thing (if someone can help me posting it here I will be very happy)
Id like to know if it would be usable... My fader tells me that it is 30 years old or so.
I would be very grateful if somebody can help me
Thanks!

Thats gonna be a 600:30K mic input. 1:7 turns
Born in 1955.
Thats my guess and I'm stickin to it!
You sure about the 3 ohms?
Measure ohms from 3 to 4.
cj

use photobucket.com for hosting pics...

I do again the measures and there are:
1-2:1k
4-5:31.3
3-5:34.4
3-4:3.8

I dont know if 3-4 pins value are normal or not... i dont know very much about transformers... im looking photobucket.com but i must go to work now.... i try to post pics that late, when i can

I post the pics in photobucket.com. The links are:

http://img78.photobucket.com/albums/v322/Apache5/TS%202434/TS_2434_01.jpg

and

http://img78.photobucket.com/albums/v322/Apache5/TS%202434/TS_2434_02.jpg


The 3.8 ohms in 3-4, are that normal? or is the transformer in a bad condition?

Thanks Cj for the info

Arnau

[quote author="Apache5"]The 3.8 ohms in 3-4, are that normal? or is the transformer in a bad condition?[/quote]

Yes, it´s normal. It´s just a tap on the input probably (if it´s an input transformer)...

maybe it´s something like 50/600:HiZ

Can you measure inductance?

I dont know how exactly I can measure it. I Have a tek 465 osc (2 ch) and i think that there is an old signal generator in my home (only pure sin wave). can I measure inductance with these?
Would be nice to know how I can... I must read the post about transformer Z I think...
thanks

Arnau

Try this:
Put a 10 ohm resistor in series with the primary,
hook up a signal generator, and inject a 1 volt signal at 1000 hertz..
Use the scope to measure the input signal.
Then measure the voltage across the resistor with the scope.
Now divide this voltage by 10 to get the current (ohms law, V=IR)
Then mesasure the voltage across the primary of the transformer.
Now divide this voltage by the current.
This is your ohms in inductive reactance.
There will be a slight error due to the dc resistance, but we don't care.
Use the value of reactance to comput the inductance.
The formula for Inductive reactance is Xl=6.28 times f L, where f is the frequency, and L is the inductance.
So lets say you read 0.01 volts across the resistor.
This means you have .1/10=1 ma.
Lets say you measure 0.9 volts across the primary.
0.9/1 ma = 0.9/0.001=900 ohms inductive reactance.
900=6.28 f L, so L = 900/6.28 f = 143 millihenries.
If your signal across the resistor is too small, use a 100 ohm resistor.
Here is the setup:




You can also use the scope to measure input vs output, which will tell you the turns ratio.
Or you can just use a regular voltmeter on ac volts.
cj

CJ you should put that artwork in a gallery. :wink:

It's funny, I converted that to a tif thinking I would save bytes, and it came out to 560 kb!
jpg = about 20 kb.
took me longer to open illustrator than it did to make the drawing!
check out all that harmonic distortion!
Looks like one of Morefords preamp kits!:razz:
:guinness:
did you get that 40 bucks?

hey, who sent me the three transformers from Ohio?
Thanks whoever it was!
Oh, and what are the two with the wire leads from?
cj

[quote author="cjenrick"]Looks like one of Morefords preamp kits[/quote]
... interesting
... do we know anything about Moreford ?

No, but you may have heard of Pat Moreford!
What's with these Canadians?

:green:

Uau... Thanks for these procedure CJ, I will try it when I will have time and I will post the results :grin:
now i must go to work :sad:

Arnau

i was trying to do the tests but i have some problems... when you say 1V its peak to peak, 0 to peak? Im not sure if it can influentiate... :shock:

Arnau

AND whats WRONG with US Canadians? Canada is a fine place to be from. Just imagine, and infinite supply of ice for ahem, beverages.
I'ts about +30C today.

Thanks Butta! and I'm working on it....
Should be able to fix the broken lead also.
:guinness: