| 摘要 |
PURPOSE:To prevent a transistor form voltage damaging and to reduce a noise to the exterior by absorbing a spike voltage generated through switching operation by a capacitor. CONSTITUTION:A transformer T2 is composed of the first primary winding T2(A), the second primary winding T2(B), and the secondary winding T2(C), a transistor Q2 operating as a switching element, a diode D3 and a capacitor C3 are connected with the primary side circuit, and a rectifier made of a diode D4 and a capacitor C4 is connected with the secondary side circuit. A spike voltage generated when the transistor Q2 is switched is absorbed by the capacitor C3. |
