Experiment 2. Getting CVC semiconductor Zener diodeAssemble the circuit according to fig. 3. 10.
Fig. 3. 10. The scheme to getting the VAC semiconductor Zener diode
Turn the assembled circuit simulation. Altering the EMF of source in the order given in table. 3. 10, measure the currents of the circuit and drop the voltage on the Zener diode.
Table 3. 10
Definition of CVC of semiconductor Zener diode
For obtained data in the third quadrant of the Cartesian coordinate system construct the dependence I(U).
Experiment 3. Getting CVC nonlinear DC circuit
Assemble the electrical circuit for the experiment depicted in fig. 3. 11.
Fig. 3. 11. The scheme for getting CVC nonlinear DC circuit
Turn on the modeling process of the collected schemes. Changing of the source EMF according to the values shown in table. 3. 11, measure the corresponding values of the currents. Measurement results record in table. 3. 11.
Table 3. 11
The definition of a nonlinear chain of CVC
According to the obtained results build a CVC nonlinear circuit I(E).
The same build run on the basis of the wellknown CVC semiconductor Zener diode and resistors included in the circuit shown in fig. 3. 11.
Questions
1. What determines the resistance of two seriesand parallelconnected resistors?
2. How to determine the equivalent EMF of two seriesconnected sources?
3. How to determine the equivalent current of two parallel connected sources?
4. What is the difference between an ideal source of energy from nonideal?
5. How to replace a nonideal source of EMF is equivalent nonideal current source?
6. Write down expressions for Ohm's law for subcircuit and for the complete chain.
7. Write down expressions for the first and second Kirchhoff's laws.
8. What are the methods of calculation of nonlinear DC circuits used in practice?
9. What does the voltampere characteristic of a semiconductor diode look like?
10. What does the voltampere characteristic of a semiconductor Zener diode look like?
Chapter 4. The electric circuit of sinusoidal current
_______________________________________________
Experimental determination of the parameters
Elements of AC circuits
Electric circuit AC with the series connection
Of elements
Electric circuit AC with parallel connection
Of elements
Date: 20180827; view: 1066
