在帧扫描电路中,损耗较大的电解电容用于脉冲形成电路会引起非线性失真,造成图象上部明显拉长,而中下部则较为均匀的现象。现以六管帧扫描电路为例,说明用电解电容形成锯齿波时对线性的影响。一、电解电容器的频率损耗我们从图1所示的简化等效电路中知,该电容器的损耗角正切值为 In the frame scanning circuit, the larger loss of electrolytic capacitors used to pulse forming the circuit will cause nonlinear distortion, resulting in significantly elongated upper part of the image, while the lower part of the more uniform phenomenon. Six-frame scan circuit is now an example to illustrate the use of electrolytic capacitors to form a sawtooth when the linear impact. First, the electrolytic capacitor frequency loss We see from the simplified equivalent circuit shown in Figure 1, the capacitor loss tangent is