# TIU Physical basis Electronics Lab 7

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Content: Лабораторная работа № 7.docx (3021,24 kB)

# Description

Tyumen Industrial University
Department of Electricity and Electronics
Laboratory work on discipline: "Physical fundamentals of electronics"
Lab number 7 on the Investigation of the transistor amplifier circuit with common emitter

1. Objective
Investigation of the basic parameters and characteristics of the amplifier, as well as the study of methods and practical skills for their measurement.
3. Setting laboratory work

Virtual research scheme in Electronics Workbench (EWB) simulation environment is shown in Fig. 7.5.

Fig. 7.5. Study design characteristics and parameters of the amplifier
The parameters of circuit elements are as follows:
2N3904 - bipolar transistor n-p-n type; EC = 15; h21 = 155; R1 = 10 ohms; R2 = 2 k; RK = 2 k; Rs = 660 Ohm; RH = 2 k; C1 = C2 = SE = 50 uF.
3.1. To set the parameters of the circuit elements in Fig. 5 calculate the value of the voltage at the point - UB, the currents divider - ІD, base - IB, emitter - ІE, collector - ІK and voltage value - Uke, which determine the sleep mode.
3.2. Open the file with the scheme (see. Fig. 5). Clicking on the "Start" button to enable the scheme. Compare the voltage and current measurement results with the calculated values, to draw conclusions.
3.3. Calculate the basic parameters of the amplifier circuit - Rin; RVYH; KU; KI.
3.4. Remove and build amplitude response of the amplifier. Determine KU; Rin; RVYH.
3.5. Remove and construct a frequency response of the amplifier. Determine fN.gr; fV.gr; f = fV.gr - fN.gr.
3.6. To conduct a comparative analysis of theoretical calculations and experimental results, conclusions

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