Electronic ballast device and operation method thereof

An operation method for an electronic ballast device, the method comprising:

• providing a stabilizer comprising a first input terminal, a second input terminal and an output terminal electrically connected to a fluorescent lamp, wherein the stabilizer further comprises a power module for providing a working voltage to the first input terminal;
• providing a boost element comprising a first end electrically connected to the first input terminal of the stabilizer and a second end;
• providing an impedance element comprising a first end electrically connected to the second end of the boost element and a second end;
• providing a switch comprising an input terminal electrically connected to the second end of the boost element and the first end of the impedance element, an output terminal and a reference voltage input terminal electrically connected to the first end of the boost element and the first input terminal of the stabilizer;
• and
• providing a frequency selective circuit electrically connected to the output terminal of the switch, the first input terminal of the stabilizer and the second input terminal of the stabilizer;
• wherein the stabilizer charges the first end of the boost element through the first input terminal of the stabilizer, so as to make the second end of the boost element generate a couple voltage to turn on the switch and then the frequency selective circuit provides a first oscillating frequency to the stabilizer, and wherein the frequency selective circuit provides a second oscillating frequency to the stabilizer when the boost element is charged to a steady voltage.