| 摘要 |
PURPOSE: Electronic ballast and a non-electrode lamp driving apparatus using the same are provided to make low a phase as a voltage value of a Zener diode by serially adding the Zener diode. CONSTITUTION: A first and a second switch element generate a square-wave voltage pulse by alternatively implementing a switching operation. The first and second switching elements sanction a fixed size of a resonant resistance and a current formed into a high frequency by sanctioning the square-wave voltage pulse to a resonance circuit connected to each switching element. Zener diodes(Zd1, Zd2) are serially connected between the each resonance circuits connected with the first and the second switches. The first and the second switch elements are composed of a FET. One end of the resonance circuit is connected to a gate end of the FET. The other one end of the resonance circuit is connected to a source end of the FET. |
