A standard soldering iron has a heating device, which consists of nichrome wire. The heat from this wire is allocated to the copper tip. Even at home it is easy to make a soldering iron with your own hands. The only disadvantage of it is that you have to wait a long time until it heats up to the desired temperature. But in a pulse soldering iron there is no such drawback. He got this name because his sting heats up in about 5 seconds and even faster. Most often, a soldering iron tip is made from a piece of curved copper that has a diameter of 1 or 2 millimeters.
The sting of a pulsed soldering iron heats up in just 5 seconds.
Pulse soldering iron and making it yourself
The scheme in which it is arranged is much more complicated than usual. To make such a soldering iron with your own hands, you need an electronic type transformer. It connects to a few halogen lamps, which have an output voltage of 12 volts. Then this transformer needs some work. Its essence is that it requires the removal of the secondary winding and additional winding in the form of 1-2 turns of copper wire with a thickness of 1 millimeter. The finished, already modified winding is placed under the body, which looks like a pistol with a trigger. With the help of this trigger will be included a device for soldering. Another change - to the place where the barrel of the received pistol is located, is placed a rack of dielectric type, with a copper bracket attached to it, which is called the “sting”. Such a brace is similar to medical tweezers, with a voltage that is applied to its edges through a switch with a button. To modify the resulting tool, a LED-type light bulb is connected to it.
Scheme of a pulse soldering iron.
With the help of a lighting fixture it will be much easier to solder. While using such a tool you need to be attentive to one thing. Do not hold the sting in the heated position for too long. This will help to avoid breakage of its electrical circuit.
Components of a pulse soldering iron:
- electronic type transformer;
- halogen bulbs;
- copper tip;
Independent manufacture of microcircuit soldering iron
The difference between microcircuit soldering irons and other types of devices consists in the fact that there is no admission to overheating its electronic component.
The only thing you need is the presence of special devices for protection that protect the chip from damage. In such a soldering iron device, which acts as a unit for power, it is best to apply the following. It should have an adjustable output voltage having a value from 0 to 15 volts. The element that will cause heating can be an MLT resistor having a nominal value of about 8 ohms and a power of 0.5 watts, sometimes ultrasound is used for this.
To make such a resistor, you need to remove one leg and in the place where it is attached, make a hole (by drilling), having a thickness of 1.1 millimeter. To preserve safety, you need a piece of mica to create protection of its end face against contact with the internal cavity of the resistor bowl when a sting is inserted. Thus, a soldering iron for microcircuits is obtained. Already a "modified" soldering iron is best attached at the end of its body with any broken handle in which the rod has ended. This is done using a special PCB with two sides, or mounting plate. Due to this, the voltage on the resistor type heater provides a supply from the unit for power supply. The tool is ready.
The components of the microcircuit analog:
- resistor (power supply);
- means for protection against breakage;
- ballpoint body;
Thus, taking into account all the above, you can make a soldering iron with your own hands at home, as well as a pulse one, and for microcircuits.