EXPERIMENT 6

THEVENIN EQUIVALENT and OPAMP

OBJECTIVE: The object of the experiment is to learn the timing characteristics of RC

circuits.

EXPERIMENTAL WORK E1 a) Find the Thevenin Equivalent with respect to terminals a-b VTH = ? RTH = ? b) Connect a 4 ohm resistor between terminals a-b of the network. Measure the current and voltage on 4-ohm resistor. c) Using the Thevenin Equivalent connect a 4-ohm resistor to the terminals of equivalent network. Measure the current and voltage associated with 4-ohm resistor. Compare the result with E1 b)

V16Vdc

I1

3Adc

R1

5

R2

3

R36

R4

3

+-

H1

2

0

R6 5

R7

6

b

a

E2 Measure the output voltage of the op-amp for the following input values. Vdc=-25,-15, -5, 5, 10, 15, 25

+

-

OUT

U1

OPAMP

R1

3

R2

2

V225Vdc

0