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FAQ

  • Q What kind of electrical appliances can the quasi-sine wave inverter be used for?

    A
    Quasi-sine waves are also divided into several types, from square waves that are almost the same as square waves to rounded trapezoidal waves that are closer to sine waves. We only discuss the square wave here, which is also the waveform that most of the current commercially available high-frequency inverters can provide. This type of quasi-sine wave inverter can be used in notebook computers, televisions, combined audio, video cameras, digital cameras, printers, various chargers, handheld brains, game consoles, video disc players, mobile DVDs, home therapy devices And so on, inverters with larger output power can also be applied to small electric appliances such as hair dryers, electric cups, kitchen appliances and so on. But for inductive load appliances such as refrigerators, electric drills, etc., it is not suitable to use a quasi-sine wave inverter for power supply for a long time. Otherwise, it may cause damage to the inverter and related 
    electrical products or shorten the expected service life.

  • Q What are the dangers of using inverters?

    A
    The wire from the car battery to the inverter input carries a very large current. If the quality of the wire is poor, the wire is too thin or the load exceeds the standard, the copper wire heats up and eventually catches fire, which will cause a serious accident. Therefore, during the use of the inverter, the operation must be carried out in strict accordance with the provisions of the user manual.

  • Q What should I do if I want to use the inverter for a longer period of time without starting the engine?

    A
    Prepare another battery with the same voltage, and connect its positive and negative poles with the positive and negative poles of the original car battery with thick enough wires. In this way, the independent use time of the inverter can be greatly extended.

  • Q How should I connect the inverter to the power supply and load?

    A
    Use electrical appliances below 150W to directly plug the 150W inverter plug into the cigarette lighter socket for use. The inverter over 150W is directly connected to the battery through the alligator clip wire, the red wire is connected to the positive electrode of the battery, and the black wire is connected to the negative electrode of the battery. The connection should be as short as possible, and the output cable of 220V AC should be longer.

  • Q What is continuous output power? What is peak output power?

    A
    Some electric appliances or tools that use electric motors, such as refrigerators, washing machines, electric drills, etc., require a large amount of current to drive them at the moment of starting. Once they are started successfully, only a small amount of current is required to maintain their normal operation. Therefore, for the inverter, there is also the concept of continuous output power and peak output power. The continuous output power is the rated output power. Generally, the peak output power is twice the rated output power. It must be emphasized that some electrical appliances, such as air conditioners and refrigerators, have a starting current equivalent to 3-7 times the normal working current. Therefore, only the inverter that can meet the peak power of the electrical appliance can work normally.

  • Q What is the efficiency of the inverter?

    A
    The inverter itself also consumes part of the electricity when it is working, so its input power is greater than its output power. The efficiency of the inverter is the ratio of the input power to the output power of the inverter. If an inverter inputs 100W of direct current and outputs 90W of alternating current, then its efficiency is 90%.

  • Q What is an inductive load?

    A
    In layman's terms, it is the high-power electrical products made by the principle of electromagnetic induction, such as motors, compressors, relays, fluorescent lamps and so on. This type of product requires a start current much larger (about 3-7 times) than the current required to maintain normal operation during start up. For example, a refrigerator that consumes about 150 watts of electricity during normal operation can have a starting power of more than 1,000 watts. In addition, because the inductive load generates a back EMF voltage at the moment the power is turned on or off, the peak value of this voltage is much greater than the voltage that the inverter can withstand, which can easily cause instantaneous overload of the inverter , Affect the service life of the inverter. Therefore, such electrical appliances have higher requirements for power supply waveforms.

  • Q According to the output waveform, how many types of inverters are divided into?

    A
    There are two main categories, one is sine wave inverter, and the other is square wave inverter. The output of the sine wave inverter is the same or better sine wave AC power as the grid we use daily, because it does not have electromagnetic pollution in the grid. The output of the square wave inverter is poor quality square wave alternating current, and its maximum value in the positive direction to the maximum value in the negative direction are generated almost at the same time, which will cause severe and unstable effects on the load and the inverter itself. At the same time, its load capacity is poor, only 40-60% of the rated load, and it cannot carry inductive load. If the load is too large, the third harmonic component contained in the square wave current will increase the capacitive current flowing into the load, and in severe cases, it will damage the power filter capacitor of the load.

  • Q What is an inverter and what role does it play?

    A
    An inverter is an electronic device that converts low-voltage direct current into alternating current, because we usually rectify 220V alternating current into direct current for use, and the inverter has the opposite effect. We are in a "mobile" era, mobile office, mobile communication, mobile leisure and entertainment. In a mobile state, people not only need low-voltage DC power supplied by batteries or batteries, but also require 220V AC power that is indispensable in our daily environment. Inverters can meet our needs.

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