This circuit was found in a 1999 publication. Its purpose is to flash two LEDs according to the sound of an equipment and to randomly flash three LEDs at a controlled frequency
In the figure we show how it is possible to use the 4013 integrated circuit in the monostable...
This self-oscillating voltage conversion circuit was found in an American 1980s documentation. The MOSFET...
This circuit was found in Radio Electronics magazine from the 90's. The circuit is for small NiCad...