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tINY · 5th September 2007

I'm not sure how "stable" you'll keep the output impedance simply by using a transformer. Remember that impedances are reflected through the transformer by the square of the turns ratio (if I remember correctly).

So, the only way to "stabilize" anything is by having a pretty big step-up transformer (if I remember my theory right - it's late and I don't feel like checking).

Usually, a passive volume control is designed like an L-pad with a target input impedance for the device being driven into.

-tINY

5th September 2007	#6
tINY Gear Guru Joined: Jul 2004 Location: Orygun Posts: 10,228	I'm not sure how "stable" you'll keep the output impedance simply by using a transformer. Remember that impedances are reflected through the transformer by the square of the turns ratio (if I remember correctly). So, the only way to "stabilize" anything is by having a pretty big step-up transformer (if I remember my theory right - it's late and I don't feel like checking). Usually, a passive volume control is designed like an L-pad with a target input impedance for the device being driven into. -tINY