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Semiconductors to high school students
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Semiconductors
About semiconductors
Semiconductor materials
The Silicon
Excitation of the silicon crystal
Doping
P-type doping
N-type doping
Semiconductor devices
P-N junction. The diode
The diode as an element of the electric circuit
The LED
EXPERIMENTS
Experiment with germanium crystals
Experiment with NTC thermistor
LED in a simple electric circuit
LED as a source of power
A LED is connected to the power supply unit with a long wire
Preparing an opto-electronic display using LEDs
Electric field can be scanned by LEDs
Colour blending in table-tennis balls with LEDs
Measuring the characteristics of the LED voltage-current
How to protect an exhibit using LEDs?
Illustration of the operation of the rectifying Graetz-circuitry
Checking the conductivity of the transistor outputs
Experiment with a solar cell
Preparation of a light gate
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