Using electron switch by BTA, BTA at touch off cross zero, thus deferent electron sine wave is intact.

用双向晶闸管作为电子开关，双向晶闸管过零触发，因而输出的是完整的正弦波。

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Using electron switch by BTA, BTA at touch off cross zero, thus deferent electron sine wave is intact.

用双向晶闸管作为电子开关，双向晶闸管过零触发，因而输出的是完整的正弦波。

youdao