This circuit uses an unusual operational amplifier nowadays and has a very low consumption. The number in parentheses corresponds to the second channel, for a stereo version.
This well-designed phase shift oscillator configuration was found in ancient European...
A stereo digital mixer using the 4053 is built as shown in figure bellow. The IC must be powered...
The resistors R determine the frequencies of the oscillator together with C. The circuit is from a...