| 摘要 |
PURPOSE:To reduce the switching loss of a transistor inverter by forming base current supplying means of an inverter inputting a pulsating power current to decrease the base current when the collector current of a transistor decreased due to the pulsating current. CONSTITUTION:A pulsating power source F which does not contain a smoothing condenser is used as an input power source of the transistors 4a, 4b of an inverter A. A transistor 11 is inserted to the output side of a base power source B including the coils 8K of a transformer 8, is connected to the bases of the transistors 4a, 4b through resistors 6a, 6b, and is connected to one terminal of the power source F through a voltage dividing resistor 14 to the base of the transistor 11. Accordingly, since the base current of the transistor 11 varies in response to the pulsating current of the power source F, the transistors 4a, 4b are driven by the base current corresponding to the collector current, thereby reducing the switching loss and improving the efficiency. |
