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What type of regulator is shown in the figure? Vin R2 12kO D₁ 1N4689 5.1V a. IC regulator Ob. Shunt regulator O c. Switching regulator Od. Series regulator R1 1000 U1 Figure 7 ģ 2N3904 Vout R3 10kO R4 3.9kO RL 50%

What type of regulator is shown in the figure? Vin R2 12kO D₁ 1N4689 5.1V a. IC regulator Ob. Shunt regulator O c. Switching regulator Od. Series regulator R1 1000 U1 Figure 7 ģ 2N3904 Vout R3 10kO R4 3.9kO RL 50%

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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**Title:** Understanding Series Voltage Regulator Circuit **Circuit Description:** This diagram illustrates a circuit schematic for a voltage regulator. The main components are: - **Operational Amplifier (U1):** This is used to stabilize the voltage. - **Resistor R1:** 100 Ohms - **Resistor R2:** 12k Ohms - **Resistor R3:** 10k Ohms - **Resistor R4:** 3.9k Ohms - **Transistor Q1:** 2N3904, a type of NPN transistor used for amplification and switching. - **Zener Diode D1:** 1N4689, providing a reference voltage of 5.1V. - **Load Resistor (RL):** Set at 50%. **Circuit Analysis:** 1. **Input Voltage (Vin):** This is where the unregulated input voltage is applied. 2. **Output Voltage (Vout):** The regulated output voltage is taken across the load resistor. 3. **Feedback Mechanism:** The operational amplifier, along with the transistor Q1, forms a negative feedback loop controlling the output voltage. The Zener diode sets a reference voltage to help regulate the output. 4. **Transistor Operation:** Q1 acts as a control element, regulating the amount of current passing through to maintain a steady output voltage despite variations in input voltage or load. **Question:** - **What type of regulator is shown in the figure?** - a. IC regulator - b. Shunt regulator - c. Switching regulator - d. Series regulator **Explanation:** The correct answer is **d. Series regulator**. This circuit functions as a linear series voltage regulator, where the series pass transistor (Q1) controls the voltage drop between the input and output to maintain a constant output voltage.
Transcribed Image Text:**Title:** Understanding Series Voltage Regulator Circuit **Circuit Description:** This diagram illustrates a circuit schematic for a voltage regulator. The main components are: - **Operational Amplifier (U1):** This is used to stabilize the voltage. - **Resistor R1:** 100 Ohms - **Resistor R2:** 12k Ohms - **Resistor R3:** 10k Ohms - **Resistor R4:** 3.9k Ohms - **Transistor Q1:** 2N3904, a type of NPN transistor used for amplification and switching. - **Zener Diode D1:** 1N4689, providing a reference voltage of 5.1V. - **Load Resistor (RL):** Set at 50%. **Circuit Analysis:** 1. **Input Voltage (Vin):** This is where the unregulated input voltage is applied. 2. **Output Voltage (Vout):** The regulated output voltage is taken across the load resistor. 3. **Feedback Mechanism:** The operational amplifier, along with the transistor Q1, forms a negative feedback loop controlling the output voltage. The Zener diode sets a reference voltage to help regulate the output. 4. **Transistor Operation:** Q1 acts as a control element, regulating the amount of current passing through to maintain a steady output voltage despite variations in input voltage or load. **Question:** - **What type of regulator is shown in the figure?** - a. IC regulator - b. Shunt regulator - c. Switching regulator - d. Series regulator **Explanation:** The correct answer is **d. Series regulator**. This circuit functions as a linear series voltage regulator, where the series pass transistor (Q1) controls the voltage drop between the input and output to maintain a constant output voltage.
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