Inverter is a device that converts direct current energy (battery, storage battery) into alternating current (generally 220V, 50Hz sine wave). It consists of inverter bridge, control logic and filter circuit. Widely used in air conditioners, home theaters, electric grinding wheels, power tools, sewing machines, DVDs, VCDs, computers, televisions, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting and so on. In foreign countries, because of the high popularity of cars, when going out to work or travel, you can use inverters to connect batteries to drive electrical appliances and various tools to work.
The output power specifications of vehicle-mounted inverter through cigarette lighter are 20W, 40W, 80W, 120W to 150W. The inverter power supply with high power should be connected to the battery through the connecting wire. By connecting household appliances to the output of the power converter, various electrical appliances can be used in automobiles. Electrical appliances that can be used include: mobile phone, notebook computer, digital video camera, camera, lighting lamp, electric shaver, CD player, game machine, PDA, power tools, car refrigerator and various electrical appliances for travel, camping and medical emergency.
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Matters needing attention in using frequency converter
1, equipment connection and installation shall be carried out in strict accordance with the operating instructions of the frequency converter. When installing, carefully check whether the wire diameter meets the requirements; Whether the place to be insulated is well insulated; Whether the components and terminals are loose during transportation; Whether the grounding of the system meets the requirements.
2. General frequency converters have automatic protection for open circuit, overcurrent, overvoltage, overheating and other projects, and there is no need to stop manually when these phenomena occur; The protection point of automatic protection is generally set at the factory and does not need to be adjusted.
3, should be strictly in accordance with the provisions of the inverter operation and maintenance instructions. Especially: pay attention to whether the input voltage is normal before starting; Pay attention to whether the switching sequence is correct and whether the indicators and indicators are normal during operation.
4. When the room temperature exceeds 30℃, cooling measures should be taken to prevent equipment failure and prolong the service life of the equipment.
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