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 circuit was found in a 1966 General Electric documentation. It makes use of direct contact...
LEDs are diodes and can be tested with a simple configuration that allows the display of its...
This circuit uses components that are still common despite being from 1995 documentation. The circuit can...