Found in a 1965 General Electric Hobby Manual, this timer was originally created to operate with photo magnifiers of the time. The circuit can be adapted for other purposes.
This circuit assumes that a pulse produced by S1 has a constant duration determined by R1 and C1....
This circuit was obtained from an ancient American documentation. The coil consists of 80 to 100...
This circuit was found in Raytheon's 1967 documentation. The circuit uses an operating of the era,...