| 摘要 |
PURPOSE:To reduce the reverse voltage by limiting the charging current of a power storage capacitor of a power feedback power source by the primary winding of a transformer and resetting the storage energy by the secondary winding. CONSTITUTION:A series circuit of a power storage capacitor 3 and a diode 4 is connected to a rectifier 2, the output is applied to a blocking oscillation type transistor inverter 5, the collector of the transistor 52 is connected to one terminal of a capacitor 3 through the primary winding 7P of a transformer 7 and a diode 6, a series circuit of the secondary winding 7S and a diode 8 is connected to both ends of the capacitor 3 to form a power source. Thus, the charging current is limited by the winding 7P, the storage energy is reset via the winding 7S, a reverse voltage applied to the feedback diode 6 can be reduced, thereby improving the reliability. |
