Found in the June 1987 issue of Radio Electronics magazine, this circuit uses well-known CMOS components. The circuit has a CMOS amplifier stage that drives a small speaker.
This interesting control circuit was found in an Electronics Now from 1988. Through it we can...
Found in a 1964 Electronic Design, this circuit must use transistors according to the supplied...
We found this circuit in a 90s Popular Electronics. The circuit can be implemented with modern...