Ten Stage Adjustable Staircase Generator - LM555, CD4017

Audioguru again

Joined Oct 21, 2019
With the capacitors coupling the staircase to the very low value output resistors then the outputs will average 0V and swing to -0.5V and to +0.5V.

The output capacitor values of 10uF into 100 ohms will cut frequencies below 300Hz or 400Hz. Huge capacitors will pass 1Hz but the capacitors will take a long time to charge for the first outputs. You need DC-coupling with whatever DC offset you want.

Thread Starter

Sir Kit

Joined Feb 29, 2012
Adding the second CD4017 reduced the number of available outputs, so I will settle on 16. The circuit is just a simple way of generating arbitrary waveforms. The op amp (instead of transistor) phase inverter is optional, as would be a smoothing filter for the steps.