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.
The integrated circuit used is no longer very common today, but there are still many sources that...
This was the name given to the Darlingtons in the 1950s. The circuit is from a November 1952 Radio...
Found in Popular Electronics from the 90's, this circuit uses 555 integrated and common...