Method of illuminating incandescent lamp, and circuit for illuminating the same

摘要

An incandescent lamp 12 and a MOSFET 14 are connected in series with a power supply. A capacitor 164 is interposed between the gate G of the MOSFET 14 and the capacitor 164. Electric charges are gradually stored in the capacitor 164, thereby gradually increasing the voltage level of the control signal to be supplied to the gate G.