It neither has heating problem of the electronics soft starter, nor generates high frequencyharmonic like SCR.
它没有电子软起动器的发热问题，也不会像晶闸管一样引起高次谐波。
2
Any subtle change of capacitance can be measured through the method of modulation on high-frequencyharmonic oscillation return circuit.
电容的微小变化可通过对高频谐振回路调制的方法进行测量。
3
High frequencyharmonic in electric power network can pollute the network, control high frequencyharmonic is an important research problem in electrical system function.