Indicated for calibrating digital instruments and circuits, this circuit was found in the June 1982 issue of Radio Electronics magazine. The circuit is based on components that are still available.
This 5.1 MHz oscillator was found in a 1980s American documentation. The used operational...
A NOR gate can be improvised using one NAND gate of a 4011 as shown here. The diodes are...
Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay...