China Sale AC DC High Power Switching Power Supply Manufacturer

Switching Power Supply Manufacturer

YX4 series is an economical and ultra-thin rail-type power supply that meets German industrial standards. It is suitable for installation on 35/7.5 or 35/15 rails. It is designed to 18mm(1SU)and 36mm(2SU)width. The entire series uses a full range of AC input from 85VAC to 264VAC(277VAC is also applicable), and all companies with the EN61000-3-2 standard by the European Union.

YX4 series is designed with a plastic shell, which can effectively prevent users from electrical hazards. The work efficiency is as high as 87%. Under air circulation, the entire series can work at an ambient temperature of -30 to 70 degrees. It has complete protection functions and industrial control equipment.

About Us

Who we are

YOSHINE is from China.
YOSHINE is a relay manufacturer.

Wenzhou Derrek Electric Co., Ltd. is a China Switching Power Supply Manufacturer and Sale Switching Power Supply . YOSHINE’s products can be divided into two categories:
1. Products that manage electronic control processes (Step Relay, Time Relay, Switching Power Supply, Floatless Level Switch, etc.).
2. Products that protect equipment (e.g. motors) from voltage and current failures (Voltage Protection Relay, Current Monitoring Relay). OEM service is offered according to the client’s requirements.
Application of YOSHINE’s products is mainly in reset control (small hospitals, nursing homes, community houses), Lighting Control, Pump Control, Generator Control, etc. Considering the important role of our products, we keep developing new products and improving quality standards. YOSHINE not only involves all aspects of the industrial field but also intelligent control of offices and residences. We strive to provide clients with more efficient and intelligent products.
YOSHINE has gained a reputation for short lead time, flexible design, and excellent technical support.
YOSHINE has made its contribution to the development of our society and the global intelligence industry with the mission of “Made for Connection”.

YOSHINE

Control Techniques of High Power Switching Power Supply

High power switching power supplies are designed to provide reliable and efficient power to a wide range of systems, from industrial machinery to telecommunications equipment. The control techniques employed in these power supplies are essential to ensuring performance, efficiency, and safety.

Pulse Width Modulation (PWM): One of the common control methods used in high power switching power supplies is pulse width modulation (PWM). This technique involves controlling the timing of the switching transistor’s on and off states. By adjusting the width of the pulses, the average voltage output is regulated, allowing precise control over the output power. PWM helps achieve high efficiency by reducing power losses and heat generation, which is especially important in high power systems.

Current Mode Control: Another widely used control technique is current mode control, which adds feedback from the current flowing through the inductor or transformer to the regulation loop. This approach improves the transient response and ensures better stability by quickly adjusting to changes in load. Current mode control can be used in combination with PWM to further enhance efficiency and reduce voltage overshoot.

Voltage Mode Control: Voltage mode control is a simpler control method in which the output voltage is regulated directly by feedback. While this method is easier to implement, it may not offer the same level of performance as current mode control, especially in systems with fast load changes. Nevertheless, it is still a reliable technique used in many high power applications.

Working Principle of AC-DC Switching Power Supply

An AC-DC switching power supply (SMPS) is designed to convert alternating current (AC) input into a stable direct current (DC) output, which is needed to power modern electronic devices. The working principle of an AC-DC SMPS involves a series of steps, each essential for transforming AC voltage into a regulated DC output with high efficiency.

Rectification: The step in the AC-DC conversion process is rectification. The incoming AC voltage, typically supplied from a wall socket (e.g., 120V or 230V), is fed into a rectifier circuit. This circuit consists of diodes that convert the AC waveform into a pulsating DC signal by allowing current to flow in only one direction. The rectifier smoothes out the negative cycles of the AC voltage, but the result is still a fluctuating DC signal that needs further processing.

Filtering: After rectification, the DC signal is filtered using capacitors to smooth out the ripples in the voltage. This step reduces the fluctuations in the DC signal and helps produce a more stable output. However, this DC signal is still unregulated and does not yet meet the requirements for powering electronic devices.

Switching Regulation: The key element of a switching power supply is the high-speed switching transistor. After rectification and filtering, the DC signal is typically fed into a high-frequency oscillator, which controls the transistor’s switching operation. The transistor rapidly switches on and off, converting the DC voltage into a high-frequency alternating current (AC) signal. This high-frequency AC signal allows the power supply to use smaller components, like transformers and inductors, which improves efficiency and reduces the size of the power supply.

Step-Down or Step-Up Conversion: The high-frequency AC signal is then passed through a transformer. The transformer is used to either step down or step up the voltage as needed for the application. The output voltage is regulated by adjusting the duty cycle (the ratio of the "on" time to the "off" time) of the switching transistor, often using techniques like PWM or current-mode control.