Considering the connections of Fig. 6.10b, how can you measure V? (Hint: Consider the condition when Vh is equal Vex). How can you measure and/or calculate Rh, assuming that you have already determined Vh.

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3. Assume it is desired to determine the Thevenin's parameters
experimentally, using a variable external voltage source, a voltmeter and
an ampermeter.
The external voltage source, the voltmeter and the ampermeter are
connected to the circuit as shown in Fig.6.10a. The interpretation of this
circuit connection on Thevenin's equivalent is presented in Fig. 6.10b.
A
Vsi
Isi
R
V
Vext
V
(a)
A
Rth
Vth
V
Vext
(b)
Fig.6.10
In this question you are asked to develop a method to measure Va, and Rah-
i. Considering the connections of Fig. 6.10b, how can you measure Vh?
(Hint: Consider the condition when Vh is equal Vex).
ii. How can you measure and/or calculate Rh, assuming that you have
already determined Vith.
Transcribed Image Text:3. Assume it is desired to determine the Thevenin's parameters experimentally, using a variable external voltage source, a voltmeter and an ampermeter. The external voltage source, the voltmeter and the ampermeter are connected to the circuit as shown in Fig.6.10a. The interpretation of this circuit connection on Thevenin's equivalent is presented in Fig. 6.10b. A Vsi Isi R V Vext V (a) A Rth Vth V Vext (b) Fig.6.10 In this question you are asked to develop a method to measure Va, and Rah- i. Considering the connections of Fig. 6.10b, how can you measure Vh? (Hint: Consider the condition when Vh is equal Vex). ii. How can you measure and/or calculate Rh, assuming that you have already determined Vith.
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