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经Q702放大后的下凹场频锯齿波经Q701放大,通过积分电路,在Q712基极上得到上凸的抛物波、再经Q712倒相放大后,产生下凹的场频抛物波,经VR731取样后,与VR732取样的直流电压叠加,经Q711、Q710倒相放大后,引起磁饱和电抗器L405的电抗发生相应变化,使双阻尼管D402、D403接点处电压按照场频抛物波的规律变化,对行偏转线圈中的锯
The Q702 amplified concave field frequency sawtooth wave Q701 amplified through the integral circuit, Q712 in the base of the convex convex parabolic, and then amplified by Q712 inversions, resulting in concave field frequency parabolic, the VR731 After sampling, it is superposed with the DC voltage sampled by VR732. After Q711 and Q710 are inverted and amplified, the reactance of L405 is changed accordingly. The voltage at the junction of D402 and D403 changes according to the law of field parabola , On the line deflection saw in the coil