(4)集成电路分析实例现以芯片UC3842和双电压比较器LM393构成的充电器电路为例,介绍集成电路图的识读方法。该种电器的电路图如图1所示(图见上期)。主要由电源控制芯片UC3824和双电压比较器LM393构成。其中,UC3842和相关组件构成了功率变换器部分,LM393和相关组件构成了电压检测和控制部分。 (4) integrated circuit analysis example Now with the chip UC3842 and dual voltage comparator LM393 charger circuit as an example to introduce the integrated circuit diagram of the reading method. The kind of electrical circuit shown in Figure 1 (see the previous period). Mainly by the power control chip UC3824 and dual voltage comparator LM393 form. Which, UC3842 and related components constitute the power converter part, LM393 and related components constitute the voltage detection and control part.