A VOLTAGE SIGNAL OUTPUT CIRCUIT, BALLAST, AND LIGHTING DEVICE

摘要

The present invention provides a voltage signal output circuit, comprising: a resonance unit for generating a first voltage and a second voltage with respect to a reference potential; a phase shift unit, coupled to the resonance unit, for adjusting the relative phase of the first voltage to the second voltage so that the polarity of the first voltage is opposite to that of the second voltage with respect to the reference potential; and an output unit, for outputting the first voltage and the second voltage. The present utility model further provides a ballast and an lighting lamp that use the output circuit. The voltage signal output circuit of the present utility model reduces the current at the output terminal that flows back to the power supply network and the electrical and electronic device via the reference potential point by outputting voltages with opposite polarity, thereby suppressing an electromagnetic interference to the power supply network and electronic device. Furthermore, the present output circuit is compact in its structure, in favor of cost reduction and minimization.