然后为其设计了信号放大、滤波和调零电路；
Secondly, a current for it is developed, which consists of a bridge zero modulation current, signal amplifier and analog filter.
通过对内部的差动电容检测器进行激光修调，使该伺服电路的零偏电流小于1。
By laser trimming the differential capacitance amplifier, the offset current of circuit is reduced to under 1.
应用CD4098单稳态触发器组成了三相过零触发电路，达到了较为理想的调功效果。
The three-phase zero-detection trigger made up of CD4098 single side stale trigger can produce ideal effect.
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