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 simple circuit can be used as audio output stage for intercoms, experimental radios and other low...
This simple solar powered MW receiver was obtained from a 1974 Popular Electronics. The transistor can...
This flashlight project with a blinking light that makes it easy to find was found in the January...