Power Circuit Identification and Fault Analysis 1 (Power Circuit Overview)

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The power circuit in the electronic appliance is used to convert the 220V AC mains into a DC operating voltage with a lower voltage level (ie, DC voltage) required by the electronic appliance, and supply the DC operating voltage to various parts of the whole circuit. Circuit.

A power supply circuit is a general term for a system circuit that includes many unit circuits. For example, some power circuits have electronic filters; some power circuits do not; some power circuits have DC voltage regulators, and some power circuits do not have voltage regulators. In a power supply circuit having a voltage stabilizing circuit, it is divided into many types of power supply circuits depending on the type of the voltage stabilizing circuit.

The power supply circuit is widely used in various electronic appliances. As long as it is a device using electronic components, there must be a power supply circuit. As the mountain says, the power supply circuit is an indispensable circuit in the electronic circuit.

When analyzing and repairing various electronic appliances, the power supply circuit is inseparable, and the failure rate of the power supply circuit is very high in many electronic circuits. In this way, understanding the working principle of the power supply circuit, understanding the failure mechanism of the power supply circuit, enabling the failure analysis of the power supply circuit, and mastering the troubleshooting method of the power supply circuit have become essential and important for learning electronic technology and its repair technology. A ring.

This document mainly focuses on the power supply concept, power supply circuit concept, power supply circuit block diagram, power grounding circuit, power circuit circuit parts overview, power circuit fault overview and six major components. Let everyone have a systematic understanding of the power supply!

Here are a few examples of typical power circuits for reference! See the PDF documentation for an overview of the power supply circuit.

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