In article , BOB URZ
says...
I am trying to ID some small ADC transformers i have laying around.
Got a bunch of them at a auction and never used them.
The model is ADC 308G. If i were to guess they are a low to high z
transformer at line level. On the low side its 10 ohms and 25 ohms
on either side of the center tap. On the high side its 770 and 817 ohms
from the center tap to each side. Anyone got a better ID on these?
They are mounted in a small can about 3/4 " x 1 1/4" with lug leads
on one end.

Bob



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take care never to use an ohm meter when you have a small transformer for
smal signals,

you will have remenent magnetism in the kern and all your high
frequenties will be gone .......

so if you want to know what the transformer does, put a signal generator
on the leads and measure the voltages out soo you know the windings rate
and with the calculator you can make the ac resistance readings.

soooooooooo never put your ohm meater on smal signal transformers, mikr
transformers wiil be useless and signal transformers will loose the
sprankling high frequenties all.....

greatings from Holland, Theo G soundman from the first hour.

"wytse schaafsma" wrote in message
...

| take care never to use an ohm meter when you have a small transformer for
| smal signals,
|
| you will have remenent magnetism in the kern and all your high
| frequenties will be gone .......
|
| so if you want to know what the transformer does, put a signal generator
| on the leads and measure the voltages out soo you know the windings rate
| and with the calculator you can make the ac resistance readings.
|
| soooooooooo never put your ohm meater on smal signal transformers, mikr
| transformers wiil be useless and signal transformers will loose the
| sprankling high frequenties all.....
|
| greatings from Holland, Theo G soundman from the first hour.

That's unusual and unlikely, but you can always degauss them anyway.

N