3. Find the Thevenin equivalent circuit between the output terminals A and B of the given circuit. RI R4 + 201 M 1002 MA 10062 4722 {R2 4722²33R3 B

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### Circuit Analysis and Thevenin's Theorem

#### Problem 3
Find the Thevenin equivalent circuit between the output terminals A and B of the given circuit.

#### Circuit Description
The circuit consists of the following components arranged as shown in the diagram:

- A voltage source of 2V.
- Four resistors:
  - R1 = 100Ω
  - R2 = 47Ω
  - R3 = 47Ω
  - R4 = 100Ω

These resistors are connected to form a bridge circuit, which is often used in applications like balanced bridge circuits for measuring different parameters.

#### Problem 4
Determine the output voltage of the temperature-measuring bridge circuit in the given figure if the thermistor is exposed to a temperature of 75°C and its resistance at 25°C is 10kΩ. Assume the resistance of the thermistor decreases to 5kΩ at 75°C.

The problem involves calculating the change in the output voltage caused by the change in the resistance of the thermistor due to temperature variation.

---

In this educational context, students are expected to understand Thevenin's theorem and how it simplifies complex circuits into simple equivalent circuits. They'll apply this understanding to analyze the behavior of the given bridge circuit, particularly when it is influenced by changes in a component such as a thermistor.
Transcribed Image Text:### Circuit Analysis and Thevenin's Theorem #### Problem 3 Find the Thevenin equivalent circuit between the output terminals A and B of the given circuit. #### Circuit Description The circuit consists of the following components arranged as shown in the diagram: - A voltage source of 2V. - Four resistors: - R1 = 100Ω - R2 = 47Ω - R3 = 47Ω - R4 = 100Ω These resistors are connected to form a bridge circuit, which is often used in applications like balanced bridge circuits for measuring different parameters. #### Problem 4 Determine the output voltage of the temperature-measuring bridge circuit in the given figure if the thermistor is exposed to a temperature of 75°C and its resistance at 25°C is 10kΩ. Assume the resistance of the thermistor decreases to 5kΩ at 75°C. The problem involves calculating the change in the output voltage caused by the change in the resistance of the thermistor due to temperature variation. --- In this educational context, students are expected to understand Thevenin's theorem and how it simplifies complex circuits into simple equivalent circuits. They'll apply this understanding to analyze the behavior of the given bridge circuit, particularly when it is influenced by changes in a component such as a thermistor.
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