| 摘要 |
PCT No. PCT/AU93/00315 Sec. 371 Date Sep. 13, 1994 Sec. 102(e) Date Sep. 13, 1994 PCT Filed Jun. 28, 1993 PCT Pub. No. WO94/16492 PCT Pub. Date Jul. 21, 1994.A power supply which incorporates a high frequency inverter and which is suitable for use in conjunction with a florescent lamp. The power supply comprises a full wave rectifier (10) and a reservoir capacitor (12) connected across the rectifier for the purpose of providing successive half-cycles of the voltage waveform V2 across the capacitor with a minimum instantaneous voltage level greater than zero. A solid state switching device (14) and an oscillator (15) are connected in circuit with the reservoir capacitor. The oscillator generates a gating signal to the switching device. The switching device is arranged to provide an output voltage V4 which has a frequency determined by the applied gating signal V3 and which has a peak amplitude value which varies over successive cycles with the waveform of the voltage V2 across the reservoir capacitor.
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