Found in American documentation from the 90s, this circuit uses TTL technology and is therefore compatible with microcontroller drives. The circuit must be powered by a 5V power source.
The circuit below was found in the March 1990 issue of Radio Electronics magazine. The circuit...
This circuit was originally suggested in a 1968 publication to generate a white mark (frame) on a...
We found this circuit in a 1980s publication for amateur radio. It consists of an audio amplifier...