This circuit uses two electromechanical relays to realize a sequential switch that’s permanently resistant to electrical disturbance, remembering its state despite power failure and consuming energy ...

I know, I know—discussing the subject of a relay-based sequence switch in the age of omnipresent microprocessors seems to be a waste of time. After all, relays have been in use for many years. Is it ...

In the early digital era, logic gates were made exclusively of transistors and discrete components. The obvious occupation of a large space and increased heat dissipation pushed technology to ...