Power inverter Inc. is a leader among inverter manufacturer. Our main focus is creating the highest quality products. Power inverter Inc. is a china inverter company located in Shenzhen. Our company concentrates on inverter design and inverter manufacture. The main products are car inverter, home inverter, pure sine wave inverter, 12v to 220v inverter and so on. In essence, an old-fashioned mechanical inverter boils down to a switching unit connected to an electricity transformer. If you've studied our article on transformers, you'll know that they're electromagnetic devices that change low-voltage AC to high-voltage AC, or vice-versa, using two coils of wire (called the primary and secondary) wound around a common iron core. In a mechanical inverter, either an electric motor or some other kind of automated switching mechanism flips the incoming direct current back and forth in the primary, simply by reversing the contacts, and that produces alternating current in the secondary—so it's not so very different from the imaginary inverter I sketched out above. The switching device works a bit like the one in an electric doorbell. When the power is connected, it magnetizes the switch, pulling it open and switching it off very briefly. A spring pulls the switch back into position, turning it on again and repeating the process—over and over again. Power inverters have a wide variety of designs, capabilities, and features. Understanding their differences can be as simple as dividing them into two groups based on their cost.As far as the sine wave converters go, I wouldn't concern myself with it unless maybe you have some expensive music equipment like Robert mentioned. Most things that you will need an inverter for in a truck will operate just fine on the regular inverters. To get a sine wave inverter you will be spending a lot more money. I was a licensed master electrician in my former life, and I too looked into the sine wave inverters, but realized that there was not sufficient reason to go with them in the truck.