PEFI - Chapter 4 Semiconductors
pn-junction = Diodes => Zener Diodes and LEDs
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Last updated:
25-02-13 |
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 Please
Click at figure to watch a pdf document about semiconductors.
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The
pn-junction Forward and Reversed Biased. |
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I real
life will you never have to connect a diode directly to
Voltage source (DC or AC)
Try for
yourself (In the Simulator only) which current will flow
through the Diode if you connect say 3 V to Diode.
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A Bridge Rectifier able to convert
AC voltage into DC voltage
However will it be a pulsing DC voltage. |
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PEFI 5.3
LEDs = Light Emitting Diodes |
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Simulator example of different colored LEDs (Please
note! The FWD Voltage not correct) |
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Note how a LED need at least 1,8 Volt in order
lead a current and give light |
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 Press
the image to run demo |
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Exercise - Try out some of the
Applications below
(The ones with 120V AC ONLY in the Simimulator
please) |
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PEFI
4.2.6 Zener Diodes |
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Exercise - Try out the Circuits above in the Simulator
and at the Kit if possible (max voltage however 9 Volt) |
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