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根据寻呼机的组成，为了减少整机功耗，通常需要对 RF接收电路， AF解码板上的 LCD显示电路， CPU电路以及存贮电路等几大部分实施电源管理。而嗽叭、振动马达、背景灯这几个耗能元件都是经驱动三极管直接连至 1.5V电源，无本机呼叫或某些设定的功能性告警时，三极管处于关断
According to the composition of the pager, in order to reduce the power consumption of the whole machine, it is usually necessary to implement power management for several major parts of the RF receiving circuit, the LCD display circuit on the AF decoding board, the CPU circuit and the memory circuit. The horn, vibration motor, backlight these energy-consuming components are driven by the transistor directly connected to the 1.5V power supply, no local call or set some functional alarm, the transistor is turned off