Home     Contact     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS     Terms of services     Privacy policy  
 Home      Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science   

<< Back to INDEX

BJT and FET Transistor - Liquid Flow Animations [Theory]
posted October 13 2014 18:00.33 by Giorgos Lazaridis

Though both BJTs and FETs are Transistors that can be used as amplifiers (or switches of course), that is just about everything they have in common. Their operation is very different.

Transistors: (Download my Transistor Theory PDF) They are current-controlled devices. This means that the amount of current that flows through the Collector-Emitter is controlled by the amount of current which flows through the Base.

FET: They are voltage-controlled devices. In principle, no current flows through the base (other than a few micro amperes due some manufacturing parameters). The amount of current which flows through the Drain-Source is controlled by the voltage applied at the Gate.

I stumbled upon two animations with hydraulic equivalents of a Transistor and a FET device. Watch them and notice how the current flow is controlled in each case. Very good work!

The Bipolar Junction Transistor (BJT) Hydraulic Equivalent Animation

The MOSFET Hydraulic Equivalent Animation

You might also like...

How Greek Maths Changed the World [Education]

The Science and Beauty of Auroras [Education]

How is your time perception? Do this experiment! [Psychology]

The greatest discovery of modern science: 99.9% we discovered The Gods' Particle into CERN [Science]

How to train your brain to keep it fit! [Biology]

The animals with the weirdest defense mechanisms [Nature]

Does Volts or Amps Kill You? Voltage, Current and Resistance [Education]

One minus One plus One... Gives an unexpected result [Maths]

<< Back to INDEX



  Email (shall not be published)


Notify me of new posts via email

Write your comments below:
BEFORE you post a comment:You are welcome to comment for corrections and suggestions on this page. But if you have questions please use the forum instead to post it. Thank you.


  • At 15 October 2014, 5:35:15 user Teodor wrote:   [reply @ Teodor]
    • Good day!
      Please let me congratulate you for the transistor animations. Although they're very suggestive, the video length is short and I had to replayed it several times. Also I downloaded the Transistors Theory PDF and due to the analogy to the hydraulic system, I have a better grasp on transistors now. Keep up the good work.

      Have a nice day,

     Contact     Forum     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS   

    Site design: Giorgos Lazaridis
    © Copyright 2008
    Please read the Terms of services and the Privacy policy