We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the power supply which can consist of 4 batteries or a 9V battery. The basic circuit uses two-color LEDs.
This simple circuit serves to demonstrate the working principle of a Set-Reset flip-flop (S-R or...
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
This amplified circuit was found in a magazine for radio amateurs 73 of the 90s. The circuit uses an...