Are you tired and frustrated of eternally trying to balance your stereo amplifier? If so, why not let electronics
listen to the amplifier's output for you, and tell you whether the two channels are balanced or not?
Such automatic listener and balance analyzer is featured here. This simple circuit provides an optical way of telling whether the two (left and right) channels are balanced or not.
Printed Circuit Layout
Parts Placement Layout
Electronic Circuits volume 1.0 - Circuit Nr. 8
The complete data of the electronic circuit described above can be found in the following book and is available from Amazon.com.
Click on the image to view the book.