Shown here is an example of a solar inverter application. There are two bridges, the bridge on the left interfaces with the solar panel and the one on the right interfaces with the line. The solar panel normally generates the string of cells around 300 V. The bridge that interfaces with the solar panel creates a high frequency waveform which is fed through the FET transformer which rectifies the signal. The bridge on the right makes the signal suitable to be fed to the line. It creates a synthesis sine wave by means of PWM and applies the right voltage at the line frequency.