How to deal with a soldering iron that doesn't eat tin
I used to use the soldering iron head is copper head, the more you use the shorter, the year before a student's parents are operating electrical appliances business, sent me a 30W alloy head soldering iron and a roll of soldering wire.
Although it is 30W soldering iron, when in the soldering circuit because of the long period of time out of service, once you want to use it, the soldering iron head on the tin dried up, a tin, sometimes the more urgent the more annoying, how to do it?
I have a 30W, a 20W soldering iron, a total of inserted with a regulator,
I found a few 400Vuf AC capacitors in series, using a rotary switch to separate the voltage reduction, the
Keep the iron not cold, but not produce too hot and oxidation of non-tin, need to be warm when the big soldering point and then adjust the voltage to 220V, it works well.
Conditional people can buy commercial solder wire, the smaller the diameter of the more silver the better.
Not often engage in radio people can not lack a soldering iron in the home, in the absence of solder wire, can be in the old circuit board with rosin on the reverse side of the dissolved collection, I received each time a walnut large tin, it saves the buy.
Once the soldering iron head does not stain tin, more serious oxidation can be rubbed on the cement floor a few times, the lighter in the wood rubbed a few times, after heating the first rosin dipped in tin, with rosin to the entire tip of the soldering iron around the tip of the tin is convenient to use in a timely manner.
The more the wattage of the soldering iron head, pass on the electricity for a long time the more oxidation, the way is to reduce the voltage, can also be used in a few rectifier diodes like an electric kettle, electric blankets, electric heaters in the same principle of voltage reduction, find a knob to convert the regulator switch, and then find a plastic box to assemble their own a soldering iron regulator.
