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 makes use of an unusual component today, a LASCR. It is a light-activated SCR. The...
This circuit is based on the Linear Technology LT1495 and was found in a 2005 manual. The circuit...
This circuit is from a 1980s Signetics documentation. The circuit separates the modulation signal from a...