电烙铁是现代电子应用领域中广泛使用的焊接工具。电烙铁的种类,按其传导热量区分,有外热式和内热式两种。外热式电烙铁的热量利用率约40％,耗电费料,经济效益较差,现已逐渐被启热速度快、节电效果显著、热量利用率高达90％的内热式电烙铁所替代。本文介绍的低压内热式电烙铁是上海无线 Electric iron is a widely used welding tool in modern electronic applications. The type of electric iron, according to the conduction of heat to distinguish between external heat and internal heat two. External heat soldering iron heat utilization rate of about 40%, power consumption of materials, poor economic efficiency, has been gradually started heating speed, energy-saving effect is remarkable, the heat utilization as high as 90% of the internal thermal soldering iron replaced . This article describes the low-voltage electric soldering iron is Shanghai Wireless