Sunday 20 January 2019

transistors - audio blend circuit / emitter follower


This diagram is found online.
My input would be audio signal in 0-3.3v range.
Will it work under 9v with 2N3904 or BC54x transistors?
Does it need component value adjustment while operating under 9v / 5v?
What does Rt means at the left bottom corner?

Thanks.


enter image description here




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