This circuit was found in a 90's EDN. It can be implemented with either TTL or CMOS logic and used as a shield.
This circuit was suggested by General Electric in 1969 documentation. It provides a maximum output of...
This circuit causes a set of LEDs to flash sequentially in a move that is modulated by the audio...
This interesting circuit was found in an 80's Electronic Engineering. The circuit has a 50% active...