All modern electricity supply grids work with AC (alternating current) for the obvious reasons i.e. AC voltages can be transmitted over long distances trouble free, AC voltage can be very simply transformed to other levels and consumers can be connected safely protected against polarity reversal.

DC (direct current) also plays a very important role as all devices containing electronic circuits require this to operate. The sources of DC current can be Batteries, fuel- and solar cells.

Rectifiers and inverters play an important role as the links between both electrical systems. Rectifiers are to be found in almost all wall power supplies and inverters are prevalent in the operation of commercial 230V devices in cars, in uninterrupted power supplies or for the use of renewable energies.

Trio Engineering manufactures a range of inverters to meet these applications for several industry leaders.