采用含有丰富谐波分量的窄脉冲电流作为励磁信号对非晶丝直接励磁，使传感器具有灵敏度高、响应快的优点。
The magnetic sensor has characteristics of high sensitivity and quick response due to the amorphous wires excited directly by sharp pulse train current containing amount of harmonic signals.
减少了变频器输入电流中包含的高次谐波成份的输出。
It reduces the high hypo syntony wave output part included in the converted input current.
通过电路分析对电子镇流器存在的电源电流谐波高和功率因数低等问题。
In this paper has analysed high levels of harmonic currents and low Power factor of electronic ballast by circuit study.
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