subtracter

1·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·Two kinds of schemes and their designing consideration of pulse subtracter by using the method of pulse synchronization are described in this paper.

本文介绍了采用脉冲同步方法的两种脉冲减法器的方案及设计思路。