Found in the September 1992 issue of Radio Electronics magazine. This circuit generates pulses that are determined by C3. The circuit has output pulse intensity and timing adjusted by R6.
This is one of many Morse code audio oscillators that can be found in this section. The circuit...
This simple circuit can be used to power a simple communication system using ordinary telephones....
Microsemi Le87557 Differential Amplifier Mouser Electronics offers Microsemi Le87557 single...