公开(公告)号：EP0952731A3

公开(公告)日：2000-01-05

申请号：EP99107833.8

申请日：1999-04-20

申请人： Murata Manufacturing Co., Ltd.

发明人： Imamura, Nobuaki, c/o (A170) Intell. Prop. Dep. ,  Takahashi, Haruo, c/o (A170) Intell. Prop. Dep.

IPC分类号： H04N3/185 ,  H04N3/223

CPC分类号： H04N3/185

摘要： A deflection current/high voltage integration type power supply has a flyback transformer (T) having a primary winding (L1) and a secondary winding (L2); a series circuit of a deflection coil (LDY) and a first capacitor (Cs), connected in series to the primary winding (L1) of the flyback transformer (T); a resonance capacitor (C1) connected in parallel to the series circuit of the deflection coil (LDY) and the first capacitor (Cs); a first switching element (Q1), connected in parallel with the series circuit of the deflection coil (LDY) and the first capacitor (Cs), to be turned on/turned off by a drive signal or a signal synchronous to the drive signal so that a high voltage is generated at the secondary winding (L2) of the flyback transformer (T) and a deflection current flows in the deflection coil (LDY); a parallel connection circuit of a second switching element (Q2) and a second capacitor (C2), connected in series to the primary winding (L1) of the flyback transformer (T); and a switching control means (11) to control the deflection current flowing in the deflection coil (LDY) and the high voltage generated at the secondary winding (L2) of the flyback transformer (T) by controlling the on-timing and the off-timing of the second switching element (Q2) in approximate synchronism with the drive signal.

摘要翻译： 偏转电流/高压集成型电源具有具有初级绕组（L1）和次级绕组（L2）的回扫变压器（T）; 与回扫变压器（T）的初级绕组（L1）串联连接的偏转线圈（LDY）和第一电容器（Cs）的串联电路; 与偏转线圈（LDY）和第一电容器（Cs）的串联电路并联连接的谐振电容器（C1）; 所述第一开关元件（Q1）与所述偏转线圈（LDY）和所述第一电容器（Cs）的串联电路并联连接，以由驱动信号或与所述驱动信号同步的信号导通/截止，从而 在回扫变压器（T）的次级绕组（L2）产生高电压，并且偏转电流在偏转线圈（LDY）中流动; 与回扫变压器（T）的初级绕组（L1）串联连接的第二开关元件（Q2）和第二电容器（C2）的并联连接电路; 以及切换控制装置（11），通过控制导通定时和断开控制装置（11）来控制在回扫变压器（T）中在偏转线圈（LDY）中流动的偏转电流和次级绕组（L2）产生的高电压， 第二开关元件（Q2）的定时大致与驱动信号同步。