[R-390] Audio Output Transformer

[Bob Camp]

Hi

Transformers are kind of odd. The impedance ratio is the square of the 
turns ratio. Since the center tap is mid way on the input  half of the 
windings are on each side. Each half of the input winding has an 
impedance of 1K / 4 = 250 ohms. I agree that this is about the 
strangest thing in electronics, but that's the way it works.

If you have a four ohm speaker then your 1K to 8 ohm transformer should 
work just fine.

	Take Care!

		Bob Camp
		KB8TQ


On Oct 5, 2004, at 6:14 PM, Charles B wrote:

> Hi all,
>
> Today I purchased an Audio Output TRansformer from Radio Shack.  It's 
> a 1K ohm center-tapped to 8 ohms.
>
> The primary wires are:  blue, black, and green
> the secondary wires are:  Red and White
>
> Input is 1 K ohms
> Output is 8 ohms
>
> what's the combination of wires do I need and how will I hook them up 
> for 600 ohms?
>
> Thanks in advance
>
> Chuck
>
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