对于变压器问题,多集中于对变压器的工作原理及I、U、P、n各量间基本关系的考查.根据大纲和教材要求,变压器问题主要涉及以下三大题型:一、一原一副,“口”型铁芯变压器问题图1例1如图1所示,理想变压器原副线圈匝数比为n1:n2=4∶1,原线圈回路中的电阻A与副线圈回路中的负载电阻 For the transformer problem, more attention is focused on the working principle of the transformer and the examination of the basic relationship between the quantities of I, U, P, and n. According to the outline and the teaching materials, the transformer problem mainly involves the following three types of questions: First, the original one , “I” type core transformer problem Figure 1 Example 1 shown in Figure 1, the ideal transformer primary and secondary turns ratio n1: n2 = 4:1, the resistance of the primary coil loop A and secondary coil loop load resistance