| 摘要 |
The constant power ballast, for gas discharging devices, includes a switching regulator presenting a unity power factor to a line power input and a switching inverter coupled to receive a steady controlled DC output from the switching regulator. A transformer network is interposed between the switch inverter and the gas discharge device for presenting a high frequency to the gas discharge device. A signal conditioning and tuning network are coupled to the switching regulator for producing a sinusoidal current load at the output of the switching regulator. A current and voltage detector is provided for adjusting the output of the switching regulator to maintain the wattage dissipation in the gas discharge device constant. |
