| 摘要 |
PURPOSE: To improve efficiency within all load ranges. CONSTITUTION: The series circuit of a diode DA and a resistor RA is connected in parallel with a resistor RB. When a switching element Q1 is turned on, the switching element Q1 is turned on by impedance only of the resistor RB. When the switching element Q1 is turned off, the switching element Q1 is turned off by the parallel synthetic impedance of the resistor RB and the resistor RA. That is, when the switching element Q1 is turned off, the switching element Q1 is turned off by impedance lower than the case of the resistor RB. |
