Patent ID: 7034267

Claim:
A circuit for operating a microwave oven comprising: a DC voltage source; a first capacitor and a second capacitor connected in series, a combination of the first capacitor and a second capacitor being connected to the DC voltage source in parallel, a first node being between the first capacitor and the second capacitor in the combination of the first capacitor and the second capacitor; a switching part having a first and a second switching devices electrically connected to the DC voltage for switching a voltage from the DC voltage source, the first switching device and the second switching device being connected in series; a controlling part for controlling the first, and second switching devices; a magnetron for generating a microwave; and a converting part for converting the voltage from the DC voltage source to a voltage for operating the magnetron, the converting part having a first terminal and a second terminal, the first terminal being connected to a second node connecting both of the first and second switching devices, the second terminal being connected to the first node, the second terminal and the first node having a substantially equal electric potential, the second terminal being connected to an anode of the DC voltage source via the first capacitor and connected to a cathode of the DC voltage source via the second capacitor.