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Shenzhen KINRI Energy Technology Co.,Ltd.

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· The principle of capacitor voltage reduction in LED driver power supply

As for the current trend in LED driver power supply design in China, products that use the principle of capacitor voltage reduction to complete driver circuit design have gradually established a foothold in the market. LED power products designed in this way have good stability and low cost consumption. In today's article, we will briefly analyze and introduce the principle of capacitor voltage reduction in LED driver power supplies.Capacitors in LED driver power supplyThe block diagram of the voltage reduction principle in the LED driver power circuit made using the capacitor voltage reduction principle is shown in the following figure. When a sinusoidal AC power supply U (using the most common 220VAC, 50HZ as an example) is applied to a capacitor circuit, the charges on the two plates of the capacitor and the electric field between the plates are functions of time. That is to say, the effective value and amplitude of voltage and current on the capacitor also follow Ohm's law. When t...
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05-24
2024
· What are the requirements for choosing an industrial switching power supply?

The application of switching power supplies in the industrial field is very extensive and can be said to be an indispensable part. Many large equipment have high requirements for choosing industrial switching power supplies. Next, let's take a look at the high requirements for switch mode power supplies in the industrial field?Industrial Control System Power Supply1.Firstly, it is important to choose the appropriate input voltage standard.2. Choose the correct and appropriate power. In order to extend the service life of the power supply, a model with a 30% increase in output rated power should be selected.3. Consider load characteristics. The increased load is an electric motor, light bulb, or capacitor load. The current is high during startup. It is necessary to choose a suitable power source to prevent overload. If the load is an electric motor, please consider reverse voltage during shutdown.4. For other requirements, please consider the temperature of the power supply working env...
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05-24
2024
· What is the development trend of automation equipment?

In the era of rapid technological development, automation equipment is constantly evolving and transforming at an unprecedented speed. The development trend mainly presents the following noteworthy aspects.48V 10A 480W Switching Power SupplyThe first is intelligence, which deeply integrates with cutting-edge technologies such as artificial intelligence and machine learning, making automation equipment like having a smart brain with stronger autonomous decision-making and learning abilities, thereby achieving more intelligent operation and control, bringing great convenience to production and life.High precision and performance are unremitting pursuits, constantly climbing new heights, perfectly responding to increasingly demanding production and application needs with higher precision, faster speed, stronger stability and reliability, ensuring that every link can achieve the ultimate quality.The characteristics of flexibility enable automation equipment to easily respond to changes in...
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05-24
2024
· Reasons for MOS tube heating in switch mode power supply

MOSFET is a type of FET that can be made into either enhanced or depleted types, either P-type or N-type. Regardless of which type, its working principle is essentially the same. There are many types and functions of MOS transistors, and their switching function is mainly used in the use of power supplies.MOSFET TUBEMOSFETs often apply voltage to the input gate to control the current of the output drain. By controlling the characteristics of the device through the voltage applied to the gate, there will be no charge storage effect caused by the base current when a transistor is used as a switch. The open drain circuit of MOSFETs is commonly used in switch mode power supplies, where the drain is connected to the load without moving, which is called an open drain. In an open drain circuit, no matter how high the voltage is applied to the load, the load current can be turned on and off, making it an ideal analog switching device.The working state of MOSFETs can be divided into on process...
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05-23
2024
· 9 Major Functions and 27 Applications of Capacitors

In circuit design, we often need to use capacitors, and their functions may vary in different circuits. Below are the 9 major functions and 27 applications of capacitors.capacitorsWhat is the function of a capacitor?1. Isolation of direct current refers to preventing direct current from passing through and allowing alternating current to pass through.2. The bypass (decoupling) function refers to providing a low impedance path for certain associated components in an AC circuit. Generally, a bypass filters out interference in the input signal, while decoupling filters out interference in the output signal to prevent interference signals from returning to the power source.3. Coupling effect, as a connection between two circuits, allows AC signals to pass through and be transmitted to the next level circuit.4. The filtering effect is important for the output of the AC-DC power module, and the capacitor behind the CPU generally plays a filtering role.5. The temperature compensation functio...
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05-23
2024

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