The circuit is from the 1977 National Semiconductor Audio Handbook. The bass and treble control is Baxandall type. The integrated circuit used is not common today.
This circuit can be used in a single optical link or optical communication system and even using an...
This oscillator produces an audible signal on a piezoelectric transducer. The frequency is...
In this circuit, from a documentation from the 70's, we have the way to control the active cycle of...