Patent ID: 7843714

Claim:
An inverter for converting an electric direct voltage, more specifically of a photovoltaic direct voltage source, into an alternating voltage with a direct voltage input with two terminals between which there is provided a bridge circuit arranged in parallel, grid chokes being provided at the alternating voltage outputs of said bridge circuit, and with an alternating voltage output with two terminals, characterized in that there is provided a first bridge branch with at least four series connected first through fourth switching elements and a second bridge branch with at least one fifth and one sixth switching element and that, between the alternating voltage terminal, which takes departure from said second bridge branch, and the connecting point corresponding to the fifth and sixth switching element provided in the second bridge branch and the respective connecting points between the first and the second or the third and the fourth switching element of the first bridge branch there is respectively connected one diode in the direction opposite the forward direction so that a respective one of the central second or third switches of the first bridge branch and a respective one of the diodes carries a freewheeling current in a condition decoupled from the direct voltage.