We found this circuit in 1967 General Electric documentation. SCRs can be replaced by current equivalents. The circuit is for 110V power grid.
Found in 90s Radio Electronics, this audio indicator makes use of an integrated circuit that is...
This circuit uses only two components. The photocell can be obtained from calculators or other...
This Nixie pipe circuit was found in 1965 documentation. Note the high supply voltage. Appropriate...