设计了具体的LED光源的驱动电路，以及前置放大器、减法器等的具体电路。
Have designed the concrete drive circuit of LED light sources and the concrete circuits of preamplifier and subtracter, etc.
重点讨论光盘驱动器中ld驱动器电路、RF前置放大电路与伺服前置放大器电路的设计与实验。
Designand Experiment of a driver circuit of LD, RF forward amplifier circuit and servo forward amplifier circuit for the optical disk driver are discussed emphatically.
为了提高前置级的共模抑制能力，采用了共模信号的抑制电路—右腿驱动和浮地跟踪。
The design adopts the circuit for constraining the in-phase signal, in order to improve the system's CMRR.
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