The Astable Multivibrator

In order to create a timing mechanism, you don’t have to have a 555 timer, an IC chip, or an oscillator. With a few passive components and two transistors, you can can an astable multivibrator with two outputs. The video below will discuss how it works, how to build it, and what the output looks like. In addition we’ll look at some interesting characteristics of the circuit.

Astable Multivibrator Video


Video Version:

CAD Version:

Parts List

9V Battery Connector |
9V Battery |
Breadboard |
Jumper Wire Kit |
LED Kit |
1kΩ & 220kΩ Resistors |
10µF & 270µF Capacitors |
Rigol DS1052E Oscope |

Scroll to Top