[GRe]

"Charles" wrote in message
...


"GRe" wrote in message
...

Some time ago I found a small transformer in the junkbox.
It looks old, like from the forties or fifties era.
I don't remember where it came from or was cannabilized from.
Anyway, today I took the trouble to measure it.

Winding W1:
Rdc = 32ohm
Saturation at about 50V, W2 open
Inductance 8.82H @ 10V/50Hz
Inductance 6.58H @ 10V/100Hz

Winding W2:
Rdc = 29ohm
Saturation at about 37V, W1 open
Inductance 5.36H @ 10V/50Hz
Inductance 4.11H @ 10V/100Hz

Winding ratio N = 1.34
Impedance ratio = 1.79

F-response -3dB @ 27kHz with a 600ohm load on W2

+3dB @ about 80kHz with (almost) no load on W2
+22dB @ 186kHz resonance with (almost) no load on W2

Iron lamination dimensions 48x40x20mm
It's "tarred" and has NO airgap
Beside end taps, no additional taps on W1 and W2

What could the purpose have been?
Anybody any idea???

Telephone application?



Could be! Maybe Western Electric?

Not mentioned in yesterday's post; there is a print
in white characters on top of the transformer.

Print: WE1612??
6 420

The last two characters of the first line are too vague to read.

Do you know they used indification no's with "WExxxx"?

Regards,
Gio