Xiaobian before I was very want to make an inverter 12v to 240v, you think if you give a 12v DC battery, you can convert it into 240v AC, can drive home ordinary light bulbs and even the TV at home, is it incredible but want to make this thing, today I will share with you a 12v to 240v AC inverter production scheme, Mainly theoretical explanation.
You are not worried about whether you will learn, it doesn't matter if you carefully read this article, you will be able to produce, at least the principle we can understand, rest assured that we are mainly for beginners, the program is absolutely the simplest.
Well not to talk nonsense, let's analyze it first, we want to convert 12v direct current into 240v alternating current, nothing more than two processes, one is to boost voltage, the other is to convert DC into alternating current, as for the boost voltage we are most familiar with may be the transformer, indeed he can help us achieve the voltage size transformation, When we were in high school, we all learned that the transformer can realize both voltage rise and voltage drop, but one bad thing is that it can only realize the voltage rise and fall of AC, and it can only smile and say nothing about DC.
So the first step we have to do is to transform the waveform, to convert DC to AC, we are generating rectangular waves today, and then use the transformer to boost the voltage.
We still use this two groups of 12v transformer today, the so-called two groups is the 12v input terminal has two input ports, that is, the blue wire on the transformer picture, the white line is the common end, in addition to this it also needs the transistor resistance and 12v power supply.
In the circuit function, in addition to the transformer T1 used to boost the voltage, the power supply V1 used to supply power, the remaining element is the rectangular wave generated circuit.
In the selection of resistance R1 and R2 generally between 1.2k-4.7k, triode does not have special requirements according to the capacity of the transformer, the capacity of the use of large power; The transformer can be ordinary control transformer, as long as there are two groups of 12V, we choose the device in this schematic diagram for transformer 0v-12V-12V, triode with Darlington tube MJ11032, resistance 4.7k, the output power can reach hundreds of watts, is not small, but the power of the transformer to choose a large point, otherwise the output power is not so large.
The principle is very simple, as long as we know the function of the unit circuit, and the booster principle, even how to master, if we know how to choose the components that is even better.
I also used a signal generator to generate sinusoidal waves, and tested it with the transformer in the figure above, which proved that our idea was correct. However, the power of the signal generator was too small to drive the electrical appliance, so I did not connect it to the electrical appliance. If I have time, I will take a video of the actual production situation and share it with you.
This is the most simple production method, the effect of this circuit made of inverters to drive a light bulb or no problem, because of the waveform of the reason is still more suitable for such electrical appliances as television, you can use sine wave to design, so there is no problem.
