新器件条件下对行输出级电路计算公式的修正与补充(Ⅵ)

the Circuit of Horizontal Output Stage Using New Type of Devices(Ⅳ)

当彩色显示器使用初级线圈电感量L_P较小的新逆程变压器时,流过饱和导通行输出管的集电极电流I_(CP),不但包括偏转线圈L_Y中的正向锯齿波电流I_(YCP),还有不能忽略的FBT初级线圈中的正向锯齿电流I_(FCP),即CGA卡时峰值电流I_(CP)(6.1A)=I_(YCP)(3.9A)+I_(FCP)(2.2A)。因此有必要对行输出级电路的电流计算公式作相应的修正和补充。

When new type of fly-back transformer (FBT) with smaller inductance in its primary coil L_p is used in color display, collector current I_(cp) flowing through the saturated on horizontal output transistor consists of not only the forward sawtooth current I_(γcp) flowing in deflection york L_y, but also the not to be ignored forward sawtooth current I_(Fcp) flowing in the primary coil of the FBT, i. e., the peak current I_(cp) (6.1A)=I_(γcp)(3.9A)+I_(Fcp).(2.2A) in card CGA. Therefore it is necessary to modify the formula used to calculate the current in the circuit of horizontal output stage.