Many years ago, maybe 10-15 years, I purchased from either Korea, Taiwan or Singapore a pair of transformers. I could even have bought them from German company Welter Electronics, but the product code doesn't add up.
I have already forgotten what I intended to use them for, but could have been intended for 2A3-SE or EL156-SE, but ... I haven't the slightest clue.
Here comes the mystery. I simplyu measured the resistance and the yellow wires indicates 0 - 4 - 8 - 16 Ohm secondary/output.
But primary/input makes me confused. The two red and the two green wires have a resistive connection and my guess is the following:
Between the green connectors I measure approx. 190 Ohm/9.16H - that could be a 3.5k Ra connection.
Between the two red wires I measure approx 170 Ohm/7.57H - could be a 2.5k Ra connection.
Or 5k/3.5k ...??
Transformer is (when looking at the pic) H 3,5" x W 2 3/4" x D 2,5". Iron core is approx 1 1/4" x 1/2".
What do you experts say, what did I grant myself many years ago? maybe someone recognize it ...
And no, it is not a mains transformer; I've got two of them.
Attached images, showing picture of the transformer and a graphic of the primary and secondary.
I have already forgotten what I intended to use them for, but could have been intended for 2A3-SE or EL156-SE, but ... I haven't the slightest clue.
Here comes the mystery. I simplyu measured the resistance and the yellow wires indicates 0 - 4 - 8 - 16 Ohm secondary/output.
But primary/input makes me confused. The two red and the two green wires have a resistive connection and my guess is the following:
Between the green connectors I measure approx. 190 Ohm/9.16H - that could be a 3.5k Ra connection.
Between the two red wires I measure approx 170 Ohm/7.57H - could be a 2.5k Ra connection.
Or 5k/3.5k ...??
Transformer is (when looking at the pic) H 3,5" x W 2 3/4" x D 2,5". Iron core is approx 1 1/4" x 1/2".
What do you experts say, what did I grant myself many years ago? maybe someone recognize it ...
And no, it is not a mains transformer; I've got two of them.
Attached images, showing picture of the transformer and a graphic of the primary and secondary.
Attachments
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As you know the intended load impedances of the secondary winding, you only need the turns ratio to find the corresponding primary impedances. Can you either measure the transformer ratio or the magnetizing inductance as seen on the secondary side?
. Never thought of that. Thanks bro!