Do you know how to categorize the power adapter?

We often in life, see and use the power adapter is a lot. But rarely understand what the difference between power adapters. In fact, the difference between the power adapter is quite big, each has a specific use, must be a certain piece of electronic equipment. Improper use may damage the equipment, or cause safety accidents. Next to share with you what power adapters are categorized!

1, according to the modulation mode classification

1). Pulse width modulation type switching regulated power adapter. Oscillation frequency remains constant, by changing the pulse width to change and regulate the size of the output voltage, sometimes through the sampling circuit, coupling circuit, etc. constitute a feedback closed-loop loop to stabilize the amplitude of the output voltage.

2). Frequency modulation type switching regulated power supply adapter. Duty cycle remains unchanged, by changing the oscillation frequency of the oscillator to regulate and stabilize the amplitude of the output voltage.

3). Hybrid modulation type switching regulated power supply adapter. By adjusting the on-time oscillation frequency to complete the regulation and stabilize the amplitude of the output voltage.

2, according to the excitation mode classification

1). He excitation type switching regulated power supply adapter. There is an oscillator in the circuit to stimulate the signal.

2). Self-excited switching regulated power supply adapter. The switching tube doubles as the oscillator in the oscillator.

3. Categorized by circuit structure

1). Bulk type switching regulated power supply adapter. The entire switching regulated power adapter circuit is composed of discrete components, its structure is more complex, less reliable.

2). Integrated circuit type switching regulated power adapter. The entire switching regulated power adapter circuit or part of the circuit is composed of integrated circuits, this integrated circuit is usually a thick film circuit. Some thick film integrated circuits include switching tubes, some do not include switching tubes. This type of switching power adapter is characterized by a simple circuit structure, easy debugging, and high reliability.

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