In remote areas, there is often a blackout. Some universities will turn off the lights at certain times, and those who like to work night shifts are upset. But that's okay, with it, you can solve this problem. This article introduces an inverter that is very easy to manufacture. It can change the 12V power supply voltage to 220V mains. The circuit is driven by a multi-vibrator consisting of BG2 and BG3, and then controlled by BG1 and BG2 to control BG6 and BG7 works.
In the circuit diagram, the oscillation circuit is powered by the regulated power supply of the BG5 and DW groups, which makes the output frequency relatively stable. At the time of production, the transformer can be equipped with a mains transformer with a common dual 12V output. The capacity of the 12V battery can be selected as needed. This circuit diagram can also be used on small generators for home use. A simple and easy-to-produce transistor inverter circuit diagram is shown below.
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