This circuit was obtained from a 1967 General Electric documentation. The circuit makes use of unusual SUS today. Other steps can be added to the circuit.
This simple circuit indicates the logic level of a TTL output. The resistors can be 1k and the...
This circuit was found in an old documentation and can be implemented with BC549 transistors. The...
This circuit was found in a 1964 Electronic Design to indicate when a headlight or flashlight bulb is...