An electric soldering iron is a crucial equipment for manufacturing electronic products and maintaining electrical systems. A high-power electric soldering iron and a low-power electric soldering iron are two categories for tin-type electric soldering irons, respectively, based on their respective purposes.
1. Prepare the production materials
One 220V/20W internal heating iron, one 220V/500W electric iron heating core. In addition, there is a 12V/10AH battery for the low-voltage electric soldering iron power supply.
2. Production steps
1. Take the inner core of the 20W electric soldering iron out of the soldering iron. Carefully take out the thin porcelain tube wrapped with the heating wire, soak it in alcohol for half an hour, and remove all the heating wires (the thin porcelain tube is very brittle, so be careful when handling it).
2. Remove the heating wire on the heating core of the electric iron, cut 1/14 of its total length, and measure its resistance with a multimeter to about 7Ω (the resistance of the heating wire of a 500W iron is about 97Ω). The ground is tightly wound on the thin porcelain tube, the lead wire is drawn out, and then the thick porcelain tube is put on, and it is put into the original electric soldering iron and connected with the wire. At this point, a low-voltage electric soldering iron is completed.
The power of this 12V low-voltage electric soldering iron is ≈ 20w (12÷7×12). It can be used with a 12V/10AH battery. The larger the battery capacity, the longer the working time.
