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Waveform characteristics of DC regulated power supply

Release date：2024-04-30

In the DC voltage regulator circuit, the waveform of the output voltage is mainly manifested in two aspects: ripple and noise. Ripple refers to the periodic fluctuation of the output voltage, which is caused by the AC component of the power supply current. In the circuit, the magnitude of the ripple is related to the capacitance value of the capacitor filter and the load current. The smaller the capacitance value, the greater the load current and the greater the ripple. Noise refers to the output voltage of high-frequency random fluctuations, usually by the components of their own noise and power supply current in the high-frequency components caused. In the DC voltage regulator circuit, the size of the noise is related to the phase noise of the components and the quality of the power supply current.

Through negative feedback control, the DC voltage regulator circuit can effectively suppress the influence of ripple and noise, thus ensuring the stability and reliability of the output voltage. At the same time, by selecting the appropriate capacitance value and controlling the quality of the power supply current, the amplitude of ripple and noise can be further reduced, and the performance of the DC regulator circuit can be improved. Therefore, the DC voltage regulator circuit widely used in electronic equipment can not only ensure the stable operation of the circuit, but also provide a clean and stable DC power supply for the normal operation of other circuits and equipment to provide stable power supply conditions.

Therefore, the waveform of the DC voltage regulator circuit is characterized by the output voltage is basically the same, the ripple is small, and the noise is small. In precision equipment, communication equipment and other applications that require high voltage stability, the waveform characteristics of DC voltage regulator circuit is particularly important.

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Waveform characteristics of DC regulated power supply

In the DC voltage regulator circuit, the waveform of the output voltage is mainly manifested in two aspects: ripple and noise. Ripple refers to the periodic fluctuation of the output voltage, which is caused by the AC component of the power supply current. In the circuit, the magnitude of the ripple is related to the capacitance value of the capacitor filter and the load current. The smaller the capacitance value, the greater the load current and the greater the ripple. Noise refers to the output voltage of high-frequency random fluctuations, usually by the components of their own noise and power supply current in the high-frequency components caused. In the DC voltage regulator circuit, the size of the noise is related to the phase noise of the components and the quality of the power supply current.

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