Patent ID: 9209705
Filing Date: 2015-12-08
Classification: H02J,H02M

Abstract:
1. A power supply circuit comprising: first and second power supply lines that are connected to an inductive load; an input line that is connected to an alternating-current power supply; a first conversion section that converts, into a first direct-current voltage, an alternating-current voltage input from said input line, and applies said first direct-current voltage between said first and said second power supply lines, said first power supply line being employed as a positive pole; a diode that has a cathode and an anode, and is arranged between said first and said second power supply lines such that said anode faces toward said first power supply line side; a capacitor that has both ends connected to a direct-current load, and is connected in series with said diode between said first and said second power supply lines; a switch section that is provided on said input line, and selects conduction/non-conduction between said alternating-current power supply and said first conversion section; and a second conversion section that converts, into a second direct-current voltage, said alternating-current voltage input without passing through said switch section, and is connected to a connection point located between said capacitor and said diode to apply said second direct-current voltage to said capacitor.