Patent ID: 7203071

Claim:
A component mounting circuit board comprising: a circuit pattern including a plurality of electrically conductive plates; an inner electrical component electrically connected to the circuit pattern; and a resin molded section made of a resin by way of molding so as to cover the circuit pattern and the inner electrical component, the resin molded section having an opening allowing an outer electrical component located outside the resin molded section to be connected to the circuit pattern therethrough after formation of the resin molded section, so that the inner and outer electrical components are interconnectable to each other via the circuit pattern; wherein the inner electrical component includes a rectifier circuit having input terminals and output terminals and an active element connected between the output terminals of the rectifier circuit and controlled so as to be switched; wherein the outer electrical component includes a resonance capacitor connected between the output terminals of the rectifier circuit; and wherein the circuit pattern includes as the electrically conductive plates: a plurality of input copper plates supplying AC power to one of input terminals and formed with terminals extending through a first side of the resin molded section and connected to an AC power supply outside the resin molded section; a plurality of input copper plates supplying AC power to the other of the input terminals and formed with terminals extending through the first side of the resin molded section and connected to the AC power supply outside the resin molded section, and a plurality of output copper plates adapted to connect the active element or the resonance capacitor to a primary coil of an external step-up transformer and formed with terminals extending through a second side of the resin molded section opposed to the first side and connected to the primary coil of the step-up transformer outside the resin molded section.