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内热式电烙铁,在维修中常因烙铁头烧死不上锡,经过多次修磨而报废,给维修带来麻烦。用一种简单方法即可使之长寿。 取一20 W或25 W内热式电烙铁芯(注意:其阻值必须在2 kΩ左右,阻值过小容易烧坏),装入30 W或25W内热式电烙铁壳中。如烙铁芯在壳中摆动,可用云母片裹上2层,然后再装入壳内即可。
Internal thermal soldering iron, often in the maintenance of the head burned tin, after repeated grinding and scrapped, to bring trouble to maintenance. Use a simple method to make it longevity. Take a 20 W or 25 W internal thermal iron core (Note: its resistance must be around 2 kΩ, the resistance is too small and easy to burn out), and put it into a 30 W or 25W internal thermal iron housing. If the iron core swing in the shell, the mica can be wrapped in 2 layers, and then can be loaded into the shell.