This circuit was published in the Ideas section of Radio Electronics magazine in August 1983. The circuit is based on the well-known 555 and is powered by a voltage of 9 V. Two power supply options are given.

This circuit was published in the Ideas section of Radio Electronics magazine in August 1983. The circuit is based on the well-known 555 and is powered by a voltage of 9 V. Two power supply options are given.