TRANSISTOR MUSEUM™  

Historic Transistor Photo Gallery

Photo Essay – Shockley 4 Layer Diodes

 

         

                                     

Shockley “Transistor Diode” Demonstrator Kit

 

 

 

 

 

 

 

Basic Shockley Diode Oscillator Circuit

 

 

Photo Essay Commentary

The basic Shockley diode oscillator circuit is shown above right. This is a sawtooth oscillator, which refers to the shape of the waveform generated by this circuit.  Only three components are needed, in addition to diode, for this circuit.  A Demonstrator Kit for the Shockley Diode (also known as the 4 layer diode, the pnpn diode or the transistor diode) was constructed at the Transistor Museum, using the basic sawtooth circuit.  A photo of the completed kit is shown above.  If proper values are used for the components, the circuit will oscillate in the audio range and produce a loud tone in an attached earphone.

 

 

Go To PhotoGallery Shockley Diodes Page 5

 

 

 

 

 

 

 

 

Copyright © 2005 by Jack Ward. All Rights Reserved.  http://www.transistormuseum.com/

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