### Understanding Linear and Switching Power Supply Circuits#### Diagram DescriptionThe provided image consists of two circuit structure diagrams:1. **Linear Power Supply Circuit (Figure a):** - **Input Voltage (_U_in_)**: 15V - **Control/Drive Unit**: Manages the operation of the transistor within the circuit. - **Output Voltage (_U_o_)**: 3V - **Load**: The component or device the power supply is driving. The control/drive unit directly modifies the input voltage to provide the desired output voltage. The excess voltage is dissipated as heat within the circuit components.2. **Switching Power Supply Circuit (Figure b):** - **Input Voltage (_U_in_)**: 15V - **Control/Drive Unit**: Manages the switching transistor and ensures efficient operation. - **Inductor and Diode**: Used to store energy and convert it efficiently. - **Output Voltage (_U_o_)**: 3V - **Load**: The component or device the power supply is driving. The control/drive unit operates the transistor as a switch, rapidly turning it on and off. This creates an energy transfer through the inductor and diode, providing efficient conversion to the desired output voltage with reduced heat dissipation.#### Questions and Explanations1. **Comparison of Working Methods of Two Circuit Power Transistors:** - **Linear Power Supply (a):** - Operates the transistor in the linear region. - The transistor acts like a variable resistor, adjusting resistance to control output voltage. - Consumes more power due to higher dissipation as heat. - **Switching Power Supply (b):** - Operates the transistor in saturation and cutoff regions, working as a switch. - Rapid switching minimizes time spent in the high dissipation transition region. - Energy is efficiently transferred with minimal heat loss.2. **Main Reasons for Power Loss in the Operation of the Two Circuits:** - **Linear Power Supply:** - Major power loss occurs due to the voltage drop across the transistor, which dissipates energy as heat. - Inefficiency is high, especially when the input voltage significantly exceeds the output voltage. - **Switching Power Supply:** - Lower power losses occur primarily due to switching transients and the energy required to drive

1) The working methods of the power transistors in a linear power supply and a switching power…

The Right figure shows the circuit structure diagrams of a linear power supply and a switching power supply. 1) Compare the differences in the working methods of two circuit power transistors. 2) Explain the main reasons for power loss in the operation of the two circuits separately. 3) Point out the highest limit values for the efficiency of the two power sources under ideal conditions. Uin 15V + Uin 15V Control /Drive Control /Drive + (a) 本 (b) Uo. 3V + _U。 3V p

The Right figure shows the circuit structure diagrams of a linear power supply and a switching power supply. 1) Compare the differences in the working methods of two circuit power transistors. 2) Explain the main reasons for power loss in the operation of the two circuits separately. 3) Point out the highest limit values for the efficiency of the two power sources under ideal conditions. Uin 15V + Uin 15V Control /Drive Control /Drive + (a) 本 (b) Uo. 3V + _U。 3V p

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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