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Simplest ways to make a 12V to 220V inverter, one with transistors and the other with Mosfets, and whether it is reasonable to make them

This time I will explain two of the simplest ways to make a 12V to 220V inverter, one with transistors and the other with Mosfet. Most often this type of inverters are made from parts of old PC power supplies.

At the end of the video you can follow the detailed way of making these inverters through many pictures. And now let’s focus on the main purpose of this video to test the real capabilities of these devices.

The first test device is made with MJE13007 type transistors. These are NPN Bipolar Power Transistors which are designed for Switching Power Supply Applications.

For the consumer, I used an LED lamp with a power of 8 and 10 watts. We can trace the shape of the output signal before the output rectifier on the oscilloscope. In this case, the DC output voltage is about 240 Volts, and the current is about 8 milliamperes. With a small increase in the power of the consumer, the output voltage drops sharply. These are approximately the limit possibilities of this type of converter.

Next we will test an inverter made with IRF3205 mosfets. The circuit diagram is a bit more complicated, but the features are therefore better.

The DC output voltage is also around 240V and remains above 200V even with a load of 50 to 70 milliamps (10-15 watts). During long-term load, the mosfets remain cool.”

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