Soldering is a convenient and reliable way to connect electrical conductors to each other. Soldering differs from welding in that the objects to be joined do not melt even partially, but instead a low-melting solder melts.
It is necessary
- - soldering iron;
- - rosin;
- - solder;
- - voltmeter;
- - load for the discharge of capacitors;
- - insulating tape;
- - tweezers;
- - wire cutters.
Instructions
Step 1
Completely de-energize all objects (wires, parts, boards, connectors, etc.) that you intend to solder together. If capacitors are present, discharge them through a suitable load, but not by short-circuiting. Then check with a voltmeter that they are really discharged. Turn on the soldering iron and let it warm up.
Step 2
Before soldering the wire, it must be tinned. Strip it a short length first. If it is stranded, twist the strands slightly together. Press it to the surface of the rosin, melt it into it with a soldering iron, and then immediately remove both the wire and the soldering iron. The wire is now rosin-coated. Put a little solder on the tip of the soldering iron (you cannot dial too much) and move it along the wire. Remove excess solder. Let the wire cool. Now it is tinned. Leads of parts can be tinned in the same way.
Step 3
If you need to solder two wires together, tin the second one in the same way. Press them together, apply rosin to the soldering area with a soldering iron tip, then a little solder. Let the solder flow, remove the excess. After the soldering point has cooled, cover it with electrical tape. If you need to solder a wire to a printed conductor, terminal, etc., first tin the appropriate object. It is inconvenient to dip it in rosin, so first apply rosin on it, and then solder. After that, solder the wire to it, the output of the part, etc. At first, the soldering will turn out to be sloppy, but over time, the skill will come by itself. In the meantime, the experience is not yet gained, it is recommended to practice on faulty boards and parts.
Step 4
Some parts are damaged by strong heat. Tin and solder their leads only at a certain distance from the case. To remove heat, use tweezers placed between the soldering point and the body of the part.
Step 5
In all cases, ensure that the objects to be soldered remain stationary until the solder has completely solidified. Otherwise, the soldering will have to be repeated. If too much solder is applied, use a rosin-coated soldering iron to remove it.
