This circuit using only transistors was obtained from Ferranti's 1969 documentation. It can be made from modern transistors. The circuit is 4 bits.
This basic circuit can be used in signal followers and other applications where an RF signal is to be...
This IR light sensor circuit was found in the July 1992 issue of Radio Electronics magazine. It is...
This circuit is nothing more than a turn signal for two alternating LEDs that can decorate a robot...