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  MOSFET Symbol
There is also a symbol for this type of transistors. This symbol resembles the one for the point-contact transistor but they are not identical. The names of the electrodes also differ. In the FET the electrodes are called source-gate-drain and as you might remember they are called emitter-base-collector in the point-contact transistor.

Both the point-contact transistor and the MOSFET can be used for the same purposes. The two main uses of any transistor are as a modulator/amplifier and as a switch.

 
     
 
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MLA style: "The Transistor". Nobelprize.org. Nobel Media AB 2014. Web. 27 Mar 2015. <http://www.nobelprize.org/educational/physics/transistor/function/mosfetsymbol.html>

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