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Tutorials  /  January 14, 2019

The Astable Multivibrator

by Jason

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

Schematic

Video Version:

CAD Version:

Parts List

9V Battery Connector | https://amzn.to/2QycVfJ
9V Battery | https://amzn.to/2rCXfJp
Breadboard | https://amzn.to/2Bkrt8k
Jumper Wire Kit | https://amzn.to/2LiAWRZ
LED Kit | https://amzn.to/2S4lpYy
1kΩ & 220kΩ Resistors | https://amzn.to/2rz1mpM
10µF & 270µF Capacitors | https://amzn.to/2Rp4zXe
Rigol DS1052E Oscope | https://amzn.to/2QYhmAP

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GOV: Realtime Transport Pi (RTPi)
Adjusting Frequency of an Astable Multivibrator

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