| 摘要 |
PURPOSE:To enhance the duty cycle accuracy by connecting two transistors with both ends of the primary winding of a transformer, and turning ON and OFF these transistors by the output of a feedback winding. CONSTITUTION:A transformer has the primary winding W1, the secondary winding W2 and a feedback winding W3. The neutral point of the winding W1 is connected with one terminal of an input power source, and the both ends of the winding W1 are respectively connected with the collectors of the transistors 2, 3. The emitters of the transistors 2, 3 are connected with the other end of the input power source. Further, one terminal of the input power source is connected through resistors 6, 7 with the bases of the transistors 2, 3. The bases of the transistors 2, 3 are connected through a series circuit of a capacitor 4 and the winding W3. An output is obtained from the winding W2 of the transformer 1. |
