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Shenzhen KINRI Energy Technology Co.,Ltd.

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· Why should a 20% margin be reserved for LED switch power supply?

The widespread application of LED switching power supplies in modern lighting systems has brought enormous convenience and benefits to the lighting industry. However, behind the shining LED lights, a seemingly small but crucial issue has attracted high attention from professionals: why should a 20% margin be reserved when designing LED switch power supplies? Is there some kind of electric spark hidden behind this number, which becomes an indispensable key to ensuring the normal operation of the lighting system? Now let's unravel this mystery of light together.Stability guarantee:In actual operation, there may be some fluctuations or uncertain factors in the circuit, such as internal components, capacitors, and inductors of the power supply, which may cause some fluctuations during operation, especially in switching power supplies with high switching frequencies. Reserving a 20% margin can ensure that the LED power supply can provide sufficient power in various situations, avoiding pow...
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03-27
2024
· Why is the shell of a switching power supply charged?

The electrification of the switch power supply casing may cause safety hazards, which may be caused by various factors. What is the reason that makes the power supply casing live? Perhaps it is a grounding issue, an internal circuit malfunction, or an insulation fault. This situation may cause the power supply casing to carry charges, increasing the risk of electric shock.Grounding issues:If the shell of the switching power supply is not properly grounded, it may cause the shell to carry charges. Increase the risk of electric shock. Users may experience electric shock when in contact with the device, especially in high humidity environments. Under normal circumstances, the casing of the equipment should be connected to ground through grounding to ensure safe current flow to ground.Internal fault:The internal circuit components of the power supply have malfunctioned, which may cause the casing to carry electricity. This may include internal short circuits or leakage issues within the p...
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03-27
2024
· Why does the switch power supply make a strange hiccup sound?

In the operation of electronic devices, we often rely on various power sources, and switch mode power supplies have been widely used due to their high efficiency and lightweight characteristics. However, perhaps you have noticed that in some cases, the power switch can produce a strange hiccup sound. This has sparked our curiosity about the internal mechanisms of switch mode power supplies: why does it hiccup? What factors are causing this phenomenon?Capacitance issue:The capacitors in the power supply may experience voltage fluctuations due to aging, damage, or poor quality, causing hiccups. This problem may be caused by the evaporation or leakage of electrolyte inside the capacitor.Inductance issue:If there is a short circuit, open circuit, or damage to the inductive components in the power supply, it may cause current fluctuations and produce sound. This is usually related to the vibration emitted by the coil in the inductor.Power load issue:Excessive or sudden changes in load may...
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03-27
2024
· Why does the frequency converter switch power supply not work?

The malfunction of the frequency converter switch power supply may be caused by various reasons. Some common possibilities include power supply issues, triggering of protective devices, control circuit failures, communication issues, program or parameter setting issues, motor or load issues, and hardware failures. Next, the editor will take a look at the specific reasons why the frequency converter switch power supply does not work?Power supply issue:There may be issues with the power supply of the frequency converter, such as unstable power supply voltage, power line faults, power switch faults, etc. The first step in solving the problem is to check the stability of the power supply and whether the power circuit is normal.Protection device triggered:Frequency converters are usually equipped with various protection devices, such as overcurrent protection, overvoltage protection, undervoltage protection, etc. If the frequency converter detects abnormalities such as current, voltage, or...
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03-27
2024
· What is the working principle of a power supply?

A power supply is a device that converts electrical energy into a specific form for use by electronic devices. The working principle of power supplies varies depending on their type. The following are several common working principles of power supplies:DC Power Supply:Rectification: Obtaining electrical energy from an AC power source and converting it into DC current through a rectification circuit. Rectification can use half wave rectification or full wave rectification.Filtering: By using a filtering circuit to remove the pulsation in the DC current, a more stable DC voltage can be obtained.Voltage stabilization: In some cases, a voltage stabilization circuit is also required to ensure that the output voltage remains stable within a certain range.AC Power Supply:Transformer: AC power typically includes a transformer, which is used to convert the input voltage into the desired output voltage.Rectification: Similar to DC power supplies, AC power supplies also require rectification cir...
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03-27
2024

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