无绳电话机极易受到雷击的损害,根本原因在于无绳电话机需要与电源线联接对移动机里的电池充电,雷击就是通过电源线损害无绳电话机的。我们以某无绳电话机为例来分析这种损害产生的过程及其造成的后果,如图1所示,某无绳电话机的充电电路。它除向移动机的电池充电外,还与固定机的收铃电路、导频电路相联。如果移动机的开关拨在“OFF”档,则雷击 Cordless telephones are extremely vulnerable to lightning strikes. The fundamental reason is that cordless telephones need to be connected to a power cord to charge the battery inside the mobile, which is damaging the cordless telephone through the power cord. Let’s take a cordless telephone as an example to analyze the damage caused by the process and its consequences, as shown in Figure 1, a cordless telephone charging circuit. In addition to the battery charging mobile machine, but also with the fixed machine bell circuit, pilot circuit associated. If the mobile machine switch dial in the “OFF” file, the lightning