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  • Basic knowledge of filters

    Basic knowledge of filters

    Jun , 21 2023
    The Line filter is a filter circuit composed of capacitance, inductance and resistance. A filter can effectively filter out a specific frequency point in the power line or frequencies outside of that frequency point, obtaining a specific frequency power signal or eliminating a specific frequency power signal. A filter, as the name suggests, is a device that filters waves. Wave "is a very broad phy...
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  • Lithium battery capacity loss cause analysis

    Lithium battery capacity loss cause analysis

    Jun , 21 2023
    Lithium-ion batteries are the fastest-developing secondary batteries after cadmium-nickel and nickel-hydrogen batteries. Its high-energy properties make its future look bright. However, lithium-ion batteries are not perfect, and their biggest problem is the stability of their charge-discharge cycle. This paper summarizes and analyzes the possible causes of capacity attenuation of Li-ion batteries,...
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  • Selection of lead carbon-carbon addition

    Selection of lead carbon-carbon addition

    Jun , 30 2023
    The influence of chemical properties such as carbon material type and addition amount on battery performance was studied. Several different types of carbon materials (graphite, carbon black, activated carbon, etc.) were selected and tested for their effects on the negative electrode plate with additional amounts ranging from 0.2% to 4%, as well as hydrogen evolution inhibitors and adhesives. And c...
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  • What is a Rack UPS

    What is a Rack UPS

    Jul , 03 2023
    IT Racks Have Unique Power Requirements A rack uninterruptible power supply (UPS) system is designed for use within standard 19-inch IT racks or rack-based enclosures. Rack-based UPS systems must be designed to provide maximum power in compact packages with built-in batteries. A rack UPS generally uses from 1U to 12U of vertical rack space. Most rack UPS systems employ either online (double conver...
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  • 7 Factors to Examine While Choosing a Lithium-Ion Battery Charger

    7 Factors to Examine While Choosing a Lithium-Ion Battery Charger

    Jul , 20 2023
    From confirming an acceptable input voltage to features like protection design and safe charging mode, these factors can help you select the right lithium-ion battery charger 1. Acceptable Input Voltage An input higher than the voltage sustenance capacity of the charger may cause damage to its internal components. Most countries use a battery charger design of the universal global voltage 110-230V...
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  • Explanation of power terms related to UPS power supply

    Explanation of power terms related to UPS power supply

    Jul , 28 2023
    Transient recovery time: The time required for the output voltage to recover to the specified range when the load suddenly changes (0-100%, 100% -0%), usually in milliseconds (ms). Filter: A device used to eliminate noise, filtering the input or output to obtain pure alternating current. Shielding: A means of isolating and blocking electromagnetic radiation using physical principles...
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  • Industrial UPS with Ride-through Protection

    Industrial UPS with Ride-through Protection

    Jul , 28 2023
    Introduction Electrical utilities use reclosers on medium voltage supply to isolate faults caused by events such as lightning strikes, tree branches across lines, or animals making contact with live wires. The result of a recloser operation is a momentary power outage, lasting for up to a few seconds. These outages can cause an unplanned production stoppage which can be very costly. When momentary...
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  • Effect of carbon black content on negative electrode performance of lead-acid battery

    Effect of carbon black content on negative electrode performance of lead-acid battery

    Aug , 04 2023
    VRLA battery is not ideal in electric vehicles because of its short life under deep charge and discharge cycle conditions. In recent years, with the improvement of positive plate grid materials, the cycle life of batteries has been improved, and the main reason for the failure of VRLA batteries for electric vehicles is the sulfation of the negative electrode. To this end, there are more studies on...
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  • 8 major functions of UPS power supply

    8 major functions of UPS power supply

    Aug , 18 2023
    The uninterrupted power supply is an uninterrupted power supply containing an energy storage device and a constant voltage constant frequencies with the inverter as the main part. Its main function is to provide uninterrupted power supply for single computers, computer network systems, or other power electronics equipment. When the city power input is normal, the UPS uninterrupted power supply pro...
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  • The Role of AC Capacitors in High Speed Circuits

    The Role of AC Capacitors in High Speed Circuits

    Aug , 18 2023
    1、Introduction For low-frequency circuits, resistors and capacitors can be analyzed as ideal devices. However, in high-frequency circuits, these two devices will not be "ideal". Today, our main discussion is about the issue of AC capacitors, which are commonly known as AC coupling capacitors. Their main function is to filter out the DC component of the signal, which is symmetrical about the X-axis...
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  • Lithium-ion battery terms explained

    Lithium-ion battery terms explained

    Aug , 18 2023
    I. Battery voltage (V) 1. Open circuit voltage (OCV) The voltage of the lithium battery when it is not connected to an external circuit or load can generally be tested with a multimeter. 2. Operating voltage (WV) The potential difference between the positive and negative terminals of the battery under applied load, that is, when there is current flowing through the battery in the circuit. When the...
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  • Why choose gel batteries?

    Why choose gel batteries?

    Aug , 22 2023
    The colloidal lead-acid battery is an improvement of the ordinary lead-acid battery with liquid electrolyte. The sulfuric acid electrolyte is replaced by a colloidal electrolyte, and the safety, power storage, discharge performance, and service life are improved compared with the ordinary battery. The colloidal lead-acid battery adopts a gel-like electrolyte; no free liquid is inside. Under the sa...
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