[Boatanchors] audio transformer

[J. Forster]

Maybe a small filament transformer:

8:600 is about 1:75 impedance ratio, so the turns ratio is SQR(75) =
SQR(3) x 5 = 1.73 x 5 = about 8.2:1

The turns ratio of a 12 V filament transformer is 120/12 = 10:1

Close enough. I'd try something small like 12V @ .25 to 1.0 Amp.

Best,
-John

==============



> What you you guys suggest as a simple approach to adapting my various
> 8 ohm audio output radios to my surplus telephone switchroom amplified
> speaker which has 600 ohms as the lowest input impedence available?
>
> If I had a proper ratio xfmr I would try it but could not find one in
> the parts box.  Any ideas?
>
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>