Update your browser to view this website correctly. Update my browser now
This breadboard simulation is based on a design published in 1984 by Forrest M. Mims III in his book ”Engineer's Mini-Notebook - 555 Circuits”.
The first 555 acts as an astable square wave oscillator that drives the second 555 that acts like a monostable oscillator that in its turn creates a single square wave
note: the 1G resistor is to have an output on my PCB board and still be able to show the simulation