This circuit was found in a 1967 RCA publication. The circuit uses components from that time, and can be used with loads up to 240 W.
This circuit uses unijunction transistors and drives a small speaker through an output...
This circuit, found in a publication from the 1980s, can have its output voltage determined by the...
The operational amplifier for this circuit, found in a 1979 publication, may be the 741....