• Job-four [five Marks]: Decide the required dc voltage offset from the transfer characteristic. Use this benefit to enable balance the amplifier - you can implement a small dc offset to one particular of the inputs to try to centre the output shut to zero volts. 但更多的情况是，进入写手群不需要任何门槛，一些语文还停留在中学水平的所谓团队，就已经在帮似乎“高学历”的大学生们写论文赚钱了... https://daltonw1hlp.isblog.net/everything-about-34842285