What is current sharing power supply,and what is the advantage?

A current sharing power supply is a type of power supply configuration where multiple power supply units are connected in parallel to provide a combined output current. In this configuration, each power supply unit shares the load and contributes to supplying the required total current. The primary advantage of a current sharing power supply is as follows: Increased Current Capacity: By connecting multiple power supply units in parallel, the overall current capacity is increased. This allows the power supply system to provide a higher total current output compared to a single power supply unit. It is particularly useful in applications that require a high current capacity, such as large-scale industrial equipment or systems with heavy power demands. Additional advantages of current sharing power supplies include: Redundancy and Reliability: When multiple power supply units are connected in parallel, they can provide redundancy. If one power supply unit fails, the remaining...

2023-06-19

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What is the main parameters of a switching power supply?

Input Voltage Range: The range of input voltage within which the switching power supply can operate properly, typically specified by the minimum and maximum input voltage values. Output Voltage: The stable voltage provided by the switching power supply to the load, usually specified as a DC voltage. Output Current: The maximum current that the switching power supply can provide to the load while maintaining the stability of the output voltage. Rated Power: The maximum power that the switching power supply can deliver stably, typically measured in watts (W). Efficiency: The efficiency of the switching power supply, which is the ratio of output power to input power, typically expressed as a percentage. Higher efficiency means less energy loss and lower heat generation. Ripple and Noise: The fluctuations and noise present in the output voltage of the switching power supply, usually measured in peak-to-peak value or millivolts (mV). Lower ripple and noise leve...

2023-06-19

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Dealing with Harmonic Distortion in LED Lighting Systems: Causes and Soluti...

Harmonic distortion refers to the presence of unwanted frequency components in an electrical signal. Harmonics can appear in AC power systems due to non-linear loads, such as LED lighting systems that use electronic drivers (such as those found in switching-mode power supplies). These non-linear loads generate highly distorted current waveforms and result in a distorted AC voltage waveform with high Total Harmonic Distortion (THD). The problem with high levels of harmonic distortion in an electrical system is that it can create inefficiency, overheating, and interference with other electrical equipment connected to the same system. These excessive harmonics can damage or reduce the lifespan of electronic equipment, increase energy consumption, and cause unexplained malfunctions in the system. Taking mitigation steps to reduce harmonic distortion in an LED lighting system is important. A common method to correct high harmonics in AC power systems is to use filters or power conditione...

2023-05-13

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The Benefits of PFC-Enhanced LED Power Supplies for Improved Efficiency and...

Power Factor Correction (PFC) is a method of compensating for the lagging power factor seen in many AC power supplies. PFC improves overall system efficiency by reducing energy consumption and reducing the amount of electromagnetic interference (EMI) generated. LED power supplies can be classified as those with PFC and those without PFC. A power supply without PFC draws an input current that lags behind the input voltage and is typically lower than what is needed by the load. As a result, this type of power supply has a low power factor and a high total harmonic distortion (THD). THD produces additional higher frequency harmonics that can interfere with other electronic systems. As a consequence, power without PFC wastes energy, produces excessive heat and noise, and can lead to interference to other electronic equipment in the network. On the other hand, a power supply with PFC compensates for the lag in the input current by shaping it to the shape of the input voltage (in-phase) a...

2023-05-13

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The Essential Guide to LED Power Supplies: Why You Need Them and How to Cho...

LED power supplies are an essential component in LED lighting systems. They ensure the correct voltage and current is delivered to the LEDs, allowing them to light up efficiently and effectively. LED lights are becoming more popular due to their energy efficiency and longer lifespan. However, without the correct power supply, LEDs can be prone to failure or reduced performance. LED power supplies, also known as LED drivers, come in several types and configurations. Most LED power supplies convert AC voltage to DC to supply to the LEDs. The most common types of LED drivers include constant voltage drivers and constant current drivers. Constant voltage LED drivers provide a fixed voltage output to keep the LED brightness constant, while constant current LED drivers provide a fixed current output to regulate the LED's brightness. Additionally, dimmable LED drivers are also available that allow dimming functionality over a range of brightness levels. When selecting an LED power supply...

2023-05-13

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