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(2)用磁饱和稳压器把扩音机与晶闸管干扰电源隔离,也有一定效果,见图4所示。(3)采用单相隔离变压器(变压比为1:1),利用变压器的漏磁(漏感)对高频干扰的感抗作用,从而达到初级输入有干扰交流电压时,次级输出一个没有或略有干扰的正弦电压的目的。设计隔离变压器时要有意提高变压器的漏感,如采用芯式(即初、次级分别绕在两边的口字形)铁芯和选用导磁率较低的铁片。
(2) with magnetic saturation voltage regulator amplifier and thyristor interference power isolation, there are certain effects, shown in Figure 4. (3) The use of single-phase isolation transformer (transformer ratio of 1: 1), the use of transformer leakage (leakage inductance) of the anti-jamming effect of high frequency interference, so as to reach the primary input interference with AC voltage, the secondary output of a No or slightly disturb the purpose of the sinusoidal voltage. When designing isolating transformers, it is necessary to increase the leakage inductance of the transformers. For example, the core type (that is, the chevron with both primary and secondary sides wound on both sides respectively) and the iron plate with lower magnetic permeability should be adopted.