Production of power frequency inverter

High frequency probe high frequency line can be customized other specifications

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM

Overview:
The power frequency inverter is popular among electronics enthusiasts because of its simple circuit, easy for beginners to make, adjust, strong anti-overload capability, low cost and practicality. Last year, I made a home inverter with the following figure, replacing the BG5 with the three-terminal regulator of the LM7812, and the power tube with four pairs of IRF150 transformers with 500W200, 220, 240, 260V multi-tap output, one system, used to start Computers and TVs are effortless, but the fans are slightly inferior. The sound is bigger and the speed is slower. When there is a power outage, move it out and use it. Everyone has no electricity, but my house is full of house.

Later, when I was charged, I was connected to the inverter LM7812 and 4 pairs of IRF150 and the filter capacitors were finished. My heart hurts. I blame that I did not use relays to switch reverse and charge!

Figure 1 Simple and practical inverter power supply circuit diagram During this period, buy back TL494 and 4 pairs of IRF540 and make an inverter drive board. It is found that at around 50Hz (no frequency meter, long-term experience of inverter) Audio, haha ​​~~~ powerful!) With a small power converter can be, 500VA UPS transformer is actually unstable and intermittent, the current is very large field tube sharp heating, the transformer with 500W sometimes stable and sometimes unstable, said It is not fixed to change a thick line, or move the board in a direction, it will be unstable, and finally abandoned!
The picture is as follows:

Figure 2 Inverter circuit diagram that can be automatically regulated

(Please read the PDF for details)