Audio Amplifier Circuit Design

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연세대학교 전기전자기초실험 예비 래포트입니다. 누구한테 준 적 없는 자료이구요 ~ A0 받았습니다 ~~

목차

①Explain the mechanism of power supply in this experiment.

②Understand the elements used in each step, then analyze circuit with respect to following instructions.
1)characteristics of transformer
2)bridge rectifier
3)capacitor used in each step
4)Linear Voltage Regulator
5)MOSFET in step 6, and its necessity
6)Explain the definition of efficiency, and describe how to calculate .

③Explain the mechanism audio amplifier in this experiment.

④Understand the elements used in each step, then analyze circuit with respect to following instructions.
1)Calculate Vout/Vin using op-amp in fig 6-17.
2)variable resistor in fig 6-17
3)Understand capacitor in fig 6-20, and analyze the circuit in terms of high/low frequency modification.

본문내용

2)bridge rectifier
A rectifier is an electrical device that converts alternating current (AC) to direct current (DC), a process known as rectification. Rectifiers have many uses including as components of power supplies and as detectors of radio signals. Rectifiers may be made of solid state diodes, vacuum tube diodes, mercury arc valves, and other components. If power supply is used to produce DC, a rectifier is used. Four diodes are required instead of the one needed for half-wave rectification. Four rectifiers arranged this way are called a diode bridge or bridge rectifier

3)capacitor used in each step
The function of capacitor is to lessen the variation in the rectified AC output voltage waveform from the bridge. One explanation of smoothing is that the capacitor provides a low impedance path to the AC component of the output, reducing the AC voltage across, and AC current through, the resistive load. In less technical terms, any drop in the output voltage and current of the bridge tends to be canceled by loss of charge in the capacitor.

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