This circuit uses NOR ports to generate signals up to 10 MHz, depending on the crystal. The supply can be done with voltages from 5 to 15 V and the signal generated is rectangular.
This analog volt-ammeter was found in an Electronics World of 1968. It makes use of a 0-1 mA...
This is one of the many possible siren configurations for the 555 integrated circuit. We found it in...
This circuit was found in an Electronics World magazine from 1990. The circuit can be mounted...