| 摘要 |
<p>A converter circuit (205) for a flash device (214) for converting a voltage from a voltage source (250) into a converter voltage comprises a transformer (220) having a primary coil (222) and a secondary coil (228). A first end (230) of the secondary coil (228) is connected to a first end (224) of the primary coil (222), and a second end (232) of the secondary coil (228) provides a converter voltage to a flash capacitor (216). An NPN transistor (234) having a collector (236), emitter (238), and a base (237) is also provided. The collector (236) is connected to the second end (226) of the primary coil (222), the emitter (238) is connected to a negative voltage of the voltage source (250), and the base (237) is connected to the flash capacitor (216) as well as a second capacitor (242). The second capacitor (242) is also connected to a positive voltage of the voltage source (250)</p> |
