Found in a 90s EDN, this circuit is indicated for power control through a 4-20 mA line. The circuit makes use of optical couplers of the time.
Found in American documentation, this circuit aims to produce pulses of certain durations from smaller...
Found in an Electronic Design of 1965, this circuit consists of NOR gates and can be used in...
Found in documentation from the 1970s, this reducing regulator uses integrated circuits and...