POWER SUPPLY, NO-ELECTRODE GAS DISCHARGE LAMP TURNING-ON DEVICE, LIGHTING EQUIPMENT AND BATTERY CHARGER

摘要

PROBLEM TO BE SOLVED: To constitute an impedance matching circuit between a high frequency power source and an exciting coil, without using electric components such as a capacitor and a coil for high frequency which are difficult to be obtained, by simplifying the driving adjustment of a preamplifier and the output adjustment of a power amplifier. SOLUTION: A preamplifier 1a is connected with a power amplifier 1b through a coaxial cable 5. In the state that the coaxial cable 5 is detached, the driving adjustment of the preamplifier 1a and the output adjustment of the power amplifier 1b are mutually independently performed. A high frequency power source 1 is connected with an exciting coil 3, via an impedance matching circuit 2 which is constituted of a series coaxial cable 5a and a parallel coaxial cable.