How do you make 12V electric irons for direct current?
Buy an external hot 220 volt electric iron, remove the top of the electric wire, and then find a 3000W 220 volt electric furnace wire, a few parallel, (for example, you want 50W) measure to 4.1 ou, cut off, winding to the original removal of the electric wire just fine
Homemade 12V electric soldering ironFirst, prepare the materials220V/20W internal heating electric iron, 220V/500W electric iron electric core one. There is also a 12V/10AH accumulator for the power supply of the low voltage soldering iron.Two, production steps1. Remove the inner core of the 20W electric iron from the soldering iron. Carefully remove the wound with electric heating wires, fine porcelain tube, put it in alcohol soak for half an hour after the removal of all electric wire (fine porcelain tube is very brittle, the operation must be careful!).2, remove the electric wire electric iron electric heating core, cutting the total length of 1/14, with a multimeter to measure the resistance of about 7 ohms (resistance 500W electric iron electric wire is 97 Ohm) the electric wire winding neatly in a fine porcelain tube, leads to lead, then set the coarse porcelain tube, put it into the original electric iron inner line, thus a low voltage electric iron made.The 12V low voltage electric iron power is 20W (12 / 7 * 12), with 12V/10AH battery can use battery capacity more work longer.
Find a detachable core, open it, count the power and resistance, find the right electric wire, turn it around and restore it
