# Conclusion through the experiment i have understood

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CONCLUSION Through the experiment, I have understood the concept of two-port network and able to set up a two-port circuit and perform the calculation of parameters using the measured voltages and currents values and compared it with the theoretical results. Furthermore, I also understood that it is inevitable to has slight difference in values between the experimental results and theoretical results due to the errors occurred during the experiment process and calculation, for example systematic error caused by the environment and instrument, gross error caused by the human and random error which is the combination of many errors. Thus, it is important for us to select the suitable apparatus and methods for the experiment and be careful and patient when undergoing the experiment and calculations so that the errors will be minimize. However, it is not necessary for the experimental results to be perfect matched to the theoretical results because it is impossible, as long the experimental results are in tolerance range, the results are considered as accurate. REFERENCES 1. Christopher K. Alexander and Matther N.O. Sadiku (2016) Fundamentals of Electric Circuits. 6 th ed. New York: McGraw-Hill Education. 11
2. William H. Hayt, Jr., Jack E. Kemmerly and Steven M. Durbin (2002) Engineering Circuit Analysis. 6 th ed. New Delhi: Tata McGraw-Hill Publishing Company. Appendix Given the two-port network be like: Formula and method used to calculate z-parameter: For the calculation of z-parameter, first we should open the input port (port 11’), which will results in the value of I 1 becomes 0A and allows us to calculate the values of Z 12 and Z 22 by finding the effective voltage and current values from the given resistors values. For the calculation of Z 21 and Z 11 , simply repeat the steps used in the previous calculation by open the output port(port 22’) and I 2 become 0A. The calculations of z-parameters are simplfy and shown in below. V 1 = Z 11 I 1 + Z 12 I 2 V 2 = Z 21 I 1 + Z 22 I 2 Formula and method used to calculate y-parameter: For the calculation of y-parameter, first we should short the input port (port11’), which will result in the value of V 1 becomes 0V and allows us to calculate the values of Z by finding the effective voltage and current values from the given resistors values. For the calculation of Z 21 and Z 11 , simply repeat the steps used in the previous calculation by open the output port(port 22’) and V 2 become 0V. However, be noted that as the port been shorted, the current will choose to flow through the short circuit part and some resistors have to be neglected in the calculation. The
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