This circuit periodically reverses the rotation of a motor to change the position of eggs in an incubator. The circuit is from Electronics Now magazine, May 1995.
This preamplifier circuit for turntable cartridges was found in the March 1994 issue of...
This circuit is from an American 1964 documentation. Transistors of the time are used, but modern...
This siren was found in a 1980s documentation. The circuit makes use of very old operational that were...