China Wholesale Nonlinear Circuit Chaotic Factories – LEEM-10A Experimental Apparatus of PN Junction Characteristics – Labor

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China Wholesale Nonlinear Circuit Chaotic Factories – LEEM-10A Experimental Apparatus of PN Junction Characteristics – Labor Detail:

Experiments

1. The relation between the PN junction diffusion current and the junction voltage is measured, and this relation shall be proved to follow the exponential distribution law through data processing;

2. The Boltzmann constant is measured more accurately(The error shall be less than 2%);

3. Learn to use operational amplifier to form a current-voltage converter to measure the weak current from 10^-6A to 10^-8A;

4. The relation between PN junction voltage and temperature is measured and the sensitivity of junction voltage with temperature is calculated;

5. Approximate to calculate the energy gap of the semiconductor (silicon) material at 0K.

Technical Indexes

1. DC power supply

An adjustable 0-1.5V DC power supply;

An adjustable 1mA-3mA DC power supply.

2. LCD measurement module

LCD resolution ratio: 128×64 pixels

Two digital indicators of voltage Range: 0-4095mV, Resolution ratio: 1mV

Range: 0-40.95V, Resolution ratio: 0.01V

3. Experimental device

It is composed of operational amplifier LF356, connector socket, multi-turn potentiometer, etc. TIP31 and type 9013 triode are externally connected.

4. Heater

Dry well copper adjustable heater;

Temperature control range of thermostat: Room temperature to 80.0℃;

Resolution ratio of temperature control 0.1℃.

5. Temperature measuring equipment

DS18B20 digital temperature sensor

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