BK Precision 4011A Instruções de Operação descarregar pdf (Página 32)

Laboratory 7: Network Theorems

201020

Laboratory #7:

Network Theorems

Objectives:

The purpose of this assignment is to study certain important network theorems, which are used

frequently in circuit analysis, and to improve skills in applying these to practical circuits. Ex-

perimental and analytical methods are compared.

Pre-Lab Preparation:

1. Review Thévenin’s Theorems for DC circuits and for AC circuits.

2. Review the Superposition Theorem.

Safety Precautions:

1. Set instruments to the highest scale setting before turning on power, and then adjust the

scale setting to produce the most accurate reading.

2. Check your circuit for correctness before you turn on the power. Recheck if you have the

slightest doubt.

3. Turn off the power before you make any circuit changes.

Equipment Needed:

 DC power supply

 Resistance decade boxes (2)

 ECE Resistance Load Box (1) or Hampden RLC-100 (1)

 Capacitance decade box

 Digital multimeter

 Function generator

Procedure:

1. Thévenin’s Theorem, DC circuit.

a) Construct the circuit shown. Measure the voltage across A-B; this is the Thévenin volt-

age, V

To obtain the 1kΩ, use a Resistance Load Box (either Hampden or ECE) with two

switches flipped up and four switches flipped down. [Note: Use a meter to check the re-

sistance to be sure it is correct before connecting to the circuit, since sometimes the inter-

–

4.7kΩ

2.2kΩ

10V

1kΩ

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BK Precision 4011A Instruções de Operação Página 32