With the progress of science and technology, electronic equipment is more safe and reliable in performance, continuously enhanced in function, and more and more automatic in use. With the increasing attention to electrical safety and the wide application of low-voltage technology, more and more electronic devices are inseparable from power adapters. Power adapters are more and more widely used in computers, communications, aerospace, home appliances, intelligence, industry and so on. There are more and more types of power adapters. Next, let's share the classification of power adapters?
1. Classification by modulation mode
1、 PWM switching regulated power adapter. The oscillation frequency remains unchanged, and the output voltage is changed and adjusted by changing the pulse width. Sometimes, the amplitude of the output voltage is stabilized by forming a feedback closed-loop loop through sampling circuit and coupling circuit.
2、 Frequency modulation switching regulated power adapter. The duty cycle remains unchanged, and the amplitude of the output voltage is adjusted and stabilized by changing the oscillation frequency of the oscillator.
3、 Hybrid modulation switching regulated power supply adapter. The amplitude of the output voltage is adjusted and stabilized by adjusting the oscillation frequency of the on time.
2. Classification by incentive mode
1、 Separately excited switching regulated power adapter. An oscillator with an excitation signal in the circuit.
2、 Self excited switching regulated power adapter. The switch tube is also used as the oscillation tube in the oscillator.
