Found in documentation from the 90s, this circuit triggers a relay with inductive signals applied to a link. The sensitivity depends on the frequency and the power supply depends on the relay used.
This circuit can be used as a time automation for driving motors in robotics and mechatronics. What we have...
The source used in this timer is of the type without transformer and regulated by the 7 W zener. The...
This trigger-delay circuit was found in a 1960s General Electric unijunction transistor manual. The...