Have designed the concrete drive circuit of LED light sources and the concrete circuits of preamplifier and subtracter, etc.
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。
2
Preamplifier is one of the most important components in photoreceiver front-end. It directly affects the performance of light receivers such as speed, noise and sensitivity.