People born after 70 have the potential to become geeks, because the era has long since passed. Just like adults at that time, men must be able to hit furniture, women must be able to step on sewing machines, and children must be able to make toys. Therefore, most of my toys before primary school were self-made. Toy guns are necessary for boys to grow up. First of all, my friends and I went to dig kiln mud (a kind of clay, which can be found when digging the foundation on the construction site). When the kiln mud was dug back, it was mixed and rubbed with a little water. It was necessary to lift it and throw it onto the cement floor. At that time, it was louder than anyone else. After repeated operations, the kiln mud becomes more and more solid. After that, we carefully squeezed it into a rectangular block, about 2cm thick, dried it in the sun for a while, and when the water vapor dries a little, we cut a contour with a knife according to the shape of the pistol. At that time, the pistol in our memory was uniform, that is, the shell gun. It was shown in the movie, and the soldiers of the Eighth Route Army used this kind of gun - and then put it in the shade, After air drying for about three or four days, it will be completely dry. Then, use a knife to carefully trim the barrel into a round shape. The trigger retainer should also be taken out. The alignment and the door should be intact, even the twill on the handle. At this time, it's time to compete with the kids who do it more like the real thing. Then it's time to play the war game, imitate the movie, close one eye, lift the gun flat, aim at the "enemy", "bang" in his mouth, "bang" in his voice, and "bang" in his voice. The hand with the gun also shakes with the cry of "bang", indicating that a bullet has been shot

In primary school, the seniors of the aviation model interest group who yearned for senior grades began to dismantle their radios at home. The first was the Panda B737 pocket transistor radio. Later, I chose electronic technology as my major and worked for more than 20 years. We have used dozens of electric soldering irons. Since we brought back the original German ERSA constant temperature welding station from Shanghai Sino German Teacher Training Center in 1998, we have never used any other soldering irons. The good times are not long. Although we brought back four soldering irons together with ERSA, all of which are long-lived soldering irons, they are consumables after all. In 2012, all four soldering irons were OVER, The Gaojie brand soldering iron of Guangzhou Huanghua was found again from the bottom of the box, but it is not as easy to use as ERSA. We are always inferior to others in terms of materials and technology, which is an indisputable fact. Until then, the electric soldering iron was no longer a tool associated with circuit boards and components. It was not too strange to see so-called artists using high-power soldering irons to burn pictures on the boards in the scenic spots. When I saw the peddlers of pig's head with soy sauce in the vegetable market with electric soldering irons burning pig's hair in the cracks of pig skin, my three views completely collapsed

Therefore, it is necessary for us to find an electric soldering iron that is both easy to use and beautiful. The white light of Japan is good. When we still stay in the internal heating mode of soldering iron core+soldering iron head, the white light already has an integrated soldering iron head. The heating parts and the soldering iron head are integrated into one, so that the efficiency is high. This is an innovation in the development of electric soldering iron. Today, the trial product brought to us by Lei Feng.com is such an electric soldering iron.

Electric soldering iron is an indispensable tool in the electronic industry and amateur electronic DIY. Usually, electronic components are fixed on PCB by using electric soldering iron for welding. When welding, we also need to prepare two small materials: solder wire and rosin. The electric soldering iron melts the solder wire by heating, so that the soldering tin and the long-term pins and the copper foil of the PCB are soaked. When the temperature drops, the electrical connection is formed. Panasonic is a flux, which is used to isolate the oxygen in the air to prevent the accelerated oxidation of the soldering tin. The molten soldering tin has better liquidity.

In the past, electronic DIY users generally needed more electric soldering irons: 20-30W electric soldering irons were generally used to weld small components, and the heat of the electric soldering irons with this power was below 300 degrees Celsius, which was not easy to overheat components and damage them; When welding large components or solder joints with large copper clad area of PCB, small power electric soldering iron is not competent. At this time, about 50W electric soldering iron is required, and the temperature can reach about 450 ℃.

Of course, the TS100 mini soldering iron provided to us by Lei Feng.com is an internally heated CNC electric soldering iron that can adjust the temperature. It is much more convenient for us to use. The TS100 mini soldering iron uses low-voltage power supply and external DC power supply. Compared with the 220 V traditional electric soldering iron, the chance of MOS tubes on the welding workpiece being punctured by electric leakage and induction is much smaller. However, for safety reasons, the TS100 mini soldering iron is also equipped with grounding screws.

The external power supply uses a voltage of 19V, and the maximum current that the power adapter can provide is 2.1A. It is estimated that the power of the TS100 mini soldering iron is about 40W. However, if you want to obtain higher power, you can use a 24V power supply.

There is a green indicator light on the power supply. However, in the past, I used to use the electric soldering iron to touch my mouth to feel whether the temperature was reached. What I remember most is that more than 20 years ago, when I tried the temperature like this, the bad friend next to me held my hand and sent it up. Suddenly, a wisp of blue smoke rose from my lips

The theme of TS100 mini soldering iron is in this small box. When opening the box, the first thing you see is the instruction manual.

The small plastic bag contains an Allen wrench and two spare screws. The soldering iron head and the handle are separated.

The soldering head adopts an integrated design, and the heating element is inside the soldering head. People who have used white light should know that the biggest advantage of this design is high efficiency, sufficient heat conduction, and rapid temperature rise. The disadvantage is that it costs more to replace the soldering head when it is worn out than ordinary soldering heads.

This is a soldering iron head. It's a pointed type. Usually we use soldering iron heads such as a pointed head, a knife head, and a horse's hoof. I'm still used to using a pointed head. The model of the soldering iron head is TS-B2. The surface of the soldering iron head has been pretreated. It is very convenient to eat tin. The surface coating can effectively increase the life of the soldering iron head. The two silver rings at the back are the power contacts of the soldering iron head. The controller is installed inside the handle. The temperature parameters are obtained according to the temperature sensor in the soldering iron head, and the control circuit drives the MOS tube to drive the heating element.

The two screws cannot be used temporarily, so they can be put away. If the soldering iron head is replaced in the future and the screws are lost, they can be taken out for use.

The tail of the controller is the LOGO of the TS100 mini soldering iron. The two connectors on the end face are a power socket and a MicroUSB socket, which are used to upgrade the firmware of the controller.

The power interface adopts a 5mm hollow power socket with a central positive pole. If higher voltage is required, 24V DC power supply can be used by oneself, but the output current must be guaranteed to be more than 2A.

On the side of the handle is the power parameter, 12-24V, and on the front is an OLED display screen and two buttons.

Now we insert the soldering iron into the controller.

It should be inserted in place to ensure that the power contact of the soldering iron head and the contact inside the controller contact in place.

After inserting it to the bottom, tighten the screw with the Allen wrench, and the soldering iron head is fixed.

All that is needed now is to turn on the power.

Of course, before using, let's talk about the impression of the TS100 mini soldering iron. First of all, the TS100 mini soldering iron is much more compact than the electric soldering iron I have at hand, which is more convenient when I go out. But I think the soldering iron is a prop for the science and engineering man to highlight his feelings: let's not talk about practicality, The shape of the TS100 mini soldering iron is more like a delicate surgical instrument, and the person who uses it is not covered with dust, with black smoke on both hands, and the appearance of the maintenance worker whose glasses are splashed with solidified rosin on the side. I believe that the maintenance worker, CRT TV or monitor, will not forget the extremely fine black dust inside the case, will they?

When it comes to taking out for maintenance, I usually use the red and yellow electric soldering irons. The red ones are externally heated and the yellow ones are internally heated, especially the red ones. As a tool for going out, I have followed me for more than 20 years. Dozens of soldering irons have been replaced.

If I repair in my own studio, I will use this ERSA electric soldering iron. This is the soldering iron I bought from Germany in 1998. It is very useful, but it is difficult to buy a matching soldering iron head in China. If the workpiece is larger, I will use this wooden handle electric soldering iron, 70W, of course, without the black hot air gun.

Compared with my delicate gadget, the TS100 mini soldering iron is not much bigger. If only the controller could have a variety of colors to choose from.

After the power is turned on, the OLED display screen displays LOGO briefly. Then the firmware version number is displayed, and the prompt key is pressed to start the electric soldering iron. After pressing the button, we can see the screen shows that the soldering iron is warming up, and the temperature is displayed in real time.

A few seconds later, the temperature of the TS100 mini soldering iron is displayed at 300 degrees Celsius, and the icon becomes a constant temperature sign.

In this way, it can be put on the soldering iron rack and ready for welding. The internal controller will keep the temperature at 300 ℃.

Of course, if you need a higher temperature, you can set it. Long press button A to enter the setting state, and then press two buttons to set the temperature. Under the 19V power supply, the setting range is 100-400 degrees Celsius.

When soldering ordinary components, the temperature should be about 300 ℃. Because ordinary solder wire, the lead solder wire we usually use, has a melting point between 183-256. The lead-free solder wire has a lower melting point, and can be melted at the lowest 120 ℃. If the temperature is too high, it will accelerate the oxidation of solder and transfer a lot of heat to components; If the temperature is too low, the solder fluidity is poor, and faulty soldering will occur in both cases.

Before the appearance of thermostatic soldering iron, we used experience to turn on and off the power supply of soldering iron, because the consumption of soldering head would be accelerated if the soldering iron was heated too high for a long time.

The biggest advantage of the TS100 mini soldering iron is that it is easy to control. Unlike the thermostatic soldering station we usually use, it needs to be adjusted on the controller, which can be easily adjusted on the handle.

This is the thermostatic soldering station of ERSA 80W, which has been used since 1998.

Today, I added a TS100 mini soldering iron to my tool kit.

The handle of ERSA is much larger than that of TS100.

Now let's use it. Because the TS100 mini soldering iron is very light, I feel the power cord is a constraint when I hold it in my hand. If I can replace it with a softer power cord, I believe the experience will be better. In addition, the power cord is PVC insulated. Our early soldering iron power cord used a kind of power cord called "flex cord", This kind of power cord is wrapped with a layer of high temperature resistant fabric. If you are not careful, the conductor will not burn the insulation skin of the conductor if it touches the soldering iron head. Therefore, I think the power cord with TS100 mini soldering iron can be more refined.

To work, we need to find a suitable soldering iron rack. How about this, Father Xinjue?

Forget it. It's better to take photos. After all, this ancient wine cup is used for decoration. If it's used as a soldering iron holder, it's more or less inappropriate.

In the welding test, because the TS100 mini soldering iron heats up very quickly, about a few seconds before the preset year, it can melt the soldering tin very well. Welding this SMD packaged IC is very efficient.

The tip design is also easy to weld resistance and capacitance. The special code is to weld small components. The temperature can be set lower properly. The solder wire with low melting point is used to avoid burning the components.

After welding, I feel it is easier to use than ordinary soldering iron. The main reason is that temperature control is very convenient. In the past, when using the welding station, I had to spare my hands to adjust the temperature control knob on the controller. Now I can press the button directly with my thumb.

It is also convenient to remove the capacitor. Click on both sides to remove the small capacitor.

If it is a slightly larger component, such as the 3.3V low dropout voltage regulator 1117, the temperature needs to be slightly higher.

After using the TS100 mini soldering iron for a whole morning, I found that the TS100 mini soldering iron is unique. The biggest feature is its portability. As a DIY tool, it is really easy. In addition to the wire mentioned above, there is a small dissatisfaction: when it is stored in the packaging box, it is necessary to remove the soldering iron head from the controller, which is troublesome, If the storage box can be made a little longer, it is unnecessary to remove the soldering iron head when going out for maintenance.