| 摘要 |
A lamp ballast drive circuit uses a resistor in place of a boot strap diode and drives a gas discharge illumination device. A pair of power devices are arranged in a half bridge configuration. A self oscillating driver circuit has output terminals connected to the power devices, respectively, a high side supply terminal, and a high side offset terminal that is coupled to the node between the power devices. A boot strap capacitor is coupled between the high side supply terminal and the high side offset terminal. A resistor is coupled between the voltage source and the high side supply terminal.
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