Patent ID: 7525826

Claim:
A switching electrical power source device comprising: rectification electronics that is connectable to a current supply line to rectify a current signal supplied by the current supply line; switching electronics that switches the signal rectified by the rectification electronics; an oscillator circuit that oscillates at a specified frequency and drives the switching element; and a transformer having a primary coil and a secondary coil and configured such that the input voltage that has been switched by the switching element is input to the primary coil, and an electrical power source output is obtained from the secondary coil; wherein one end of a first capacitor, and one end of a second capacitor, are connected at a connection point connected to a ground conductor on a secondary side that is connected to the secondary coil; and wherein the first capacitor has a second end which is connected to a hot conductor of the current supply line, and the second capacitor has a second end which is connected to a neutral conductor.