Types of Power Adapters
Release time:
2022-01-08
Power adapters are mainly divided into two types: switching power supplies and linear power supplies. 1. A switching power supply is a type of power supply that uses modern electronic technology to control the on-time and off-time ratio of switching transistors, thereby maintaining a stable output voltage. Typically, the switching power supply in a power adapter consists of a pulse-width modulation (PWM) control IC and MOSFETs. Its advantages include high efficiency, small size, and the ability to operate over a wide voltage range. Its disadvantages are significant electromagnetic interference to the power circuit and relatively difficult troubleshooting when failures occur. 2. A linear power supply converts AC power into an unregulated DC voltage through a transformer and a rectifier-filter circuit. To achieve high-precision DC voltage output, the power adapter must employ a voltage feedback circuit to adjust the output voltage. Advantages: This power supply technology is mature, the circuit is simple, and it does not suffer from the interference and noise inherent in switching power supplies. Disadvantages: The voltage feedback circuit operates in a linear mode, resulting in high power consumption by the adjustment transistor and low conversion efficiency. Additionally, due to the use of inductive transformers, the equipment tends to be heavier. For many years, Dongguan Liangrui Electronics Co., Ltd. has taken meeting customer needs as the guiding principle for all our work. We continuously improve our internal management, pursue innovative development, ensure product quality, reduce prices, and guarantee timely delivery. We have built a team that is experienced, daring to think and act, and united in its pursuit of progress. Our company has obtained ISO:9001:2015 quality management system certification, was awarded the title of “Guangdong High-Tech Enterprise” in 2018, and received the “Premium Supplier” award from Global Sources. Internally, we have established an EMI laboratory, an incoming material inspection laboratory, a finished-power-supply inspection laboratory, and multiple automated production lines. We warmly welcome new and existing customers to leave messages and inquiries!!!
Power adapter The two main types are switching power supplies and linear power supplies.
1. A switching power supply is a type of power supply that uses modern electronic technology to control the duty cycle—the ratio of on-time to off-time—for switching transistors, thereby maintaining a stable output voltage. Switching power supplies used in power adapters typically consist of a pulse-width modulation (PWM) control IC and MOSFETs.
Its advantages: high work efficiency, small size, and ability to operate within a wide voltage range. Its disadvantages: significant interference with the power circuit, and relatively difficult troubleshooting in case of failure.
2. A linear power supply converts AC power into an unregulated DC voltage by means of a transformer and a rectifier circuit, followed by filtering. To achieve high-precision DC voltage output, the power adapter must employ a voltage feedback circuit to adjust the output voltage.
Advantages: This power supply technology is mature, the circuit is simple, and it does not suffer from the interference and noise inherent in switch-mode power supplies. Disadvantages: The voltage feedback circuit operates in a linear mode, resulting in high power dissipation in the adjustment transistor and low conversion efficiency. Additionally, due to the use of an inductive transformer, the equipment is relatively heavy.
Dongguan Liangrui Electronics Co., Ltd. For many years, we have taken meeting our customers’ needs as the guiding principle behind all our work. We continuously enhance our internal management, pursue innovative development, ensure product quality, reduce prices, and guarantee timely delivery. We’ve assembled a team that is experienced, forward-thinking, bold in action, and united in its pursuit of progress. We have successfully obtained ISO:9001:2015 quality management system certification, and in 2018, we were honored with the title of “Guangdong High-Tech Enterprise” and the “Premium Supplier” designation from Global Sources. Internally, our company is equipped with an EMI laboratory, an incoming material inspection laboratory, a finished-power-supply inspection laboratory, and multiple automated production lines.
Welcome new and existing customers—feel free to leave a message or call us for inquiries!!!!!!
Dongguan Liangrui Group
Tel: +86-18038246588
Tel: +86-13537305053
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Website: www.rico-electronic.net
Email: sales@rico-electronic.net
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