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The inverter converts the DC bridge (battery, battery) into alternating current. In layman's terms, an inverter is a device that converts direct current (DC) into alternating current (AC).
To put it simply, an inverter is an electronic device that converts low-voltage (12 or 24 or 48 volts without a cavity) of direct current into 220 volts alternating current. Because it is usually used to turn 220 volt alternating current into direct current, and the inverter does the opposite, hence the name.
It consists of an inverter bridge, control logic, and filter circuitry.
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In the reverse transformer, the oscillator is first used to convert the direct current into alternating current, and then the transformer is used to boost or lower the voltage.
The actual inverter principle is the same, but after considering the power problem, the circuit is much more complicated, and it is recommended to learn oscillation circuits and switching power supplies, as well as electromagnetism.
If you are in a hurry to make one out, as long as the waist pack is enough, there is no problem, first of all, buy a 12V battery, the capacity depends on your output power. Then, buy a large power frequency transformer (50hz), the power should also be enough, and finally, there are some answering chips, which are very large and expensive.
It is still recommended that you make your own one using a transistor or FET after self-study.
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There are several ways to make an inverter, the hardware required: two capacitors of 12V 2200UF, one 80W high-frequency transformer (12V to 300), two DC MOS tubes 3205, four AC MOS tubes 740, two PWM driver chips TL594, one high-voltage capacitor 400V 100UF, one LM324 (for over- and under-voltage control), and some transistors 8050 and 8550 for the drive circuit and a circuit board. The second boring merger, I can make it myself, but it is quite difficult to clear the Huai cover, and the cost is less than 100 yuan.
Three, a multimeter piece four, a relay can realize the switching of inverter and mains, but a control circuit is required, the switching time is the reaction time of the relay, within 20ms five, for uninterruptible power supply, the general lead is controlled by thyristor, the reaction time is fast, can be phase tracking, for some high-demand equipment has benefits. The control of charging the battery can be achieved by adding a relay to the voltage sampling control circuit.
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It consists of an inverter bridge, control logic, and filter circuitry. 2. Precautions for using the on-board inverter: it should be placed in a safe place when using, especially away from children to prevent electric shock; cut off its input power in time when not in use; Do not place the inverter in direct sunlight or near the outlet of the heater; The inverter will heat up when it works, so don't place items near or on it; The inverter is afraid of water, so don't let it rain or sprinkle it with water.
Hope it helps. ☺️
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