This simple Morse Code oscillator was found in a 1980s American documentation. The power supply should be powered with 5V and the integrated can be the 7400.
This Texas Instruments integrated circuit, available from Mouser Electronics, has a 91 dB common...
This circuit was obtained from a 1977 magazine, but can still be mounted using BC548 for TR1 and...
This oscillator or clock generator generates rectangular signals and frequencies up to 100 kHz....