With the continuous progress of the times, people's living standards are also constantly improving, and electronic technology is gradually being applied to people's daily lives. Among them, the tact switch has entered thousands of households. It is not only well constructed, but also convenient to use, and it is very popular among consumers. So how to connect the touch switch? What are the buying tips for tact switches ? Let's take a look with the editor.
1. How to connect the touch switch
1. First, when welding the terminals, it should be noted that if there is a load on the terminals, it should be prevented from loosening and deforming under different conditions.
2. If you use a through-hole printed circuit board or other circuit boards other than recommended, you should consider the problem of thermal stress, because it will change with it, so be sure to confirm before soldering.
3. The second welding should be done at the normal temperature of the first welding part, because the second welding temperature aisle will deform its periphery, then the terminal will be loose, which will make it fall off and electrical characteristics reduce.
4. Be sure to determine the actual mass production conditions before welding. For example, the products are generally designed with DC resistance loads, so if they are other loads, they must be confirmed.
Second, the purchase skills of the touch switch
1. First select the touch switch to pay attention to its quality, such as to observe its feel and appearance. Second, we must pay special attention to its resistance. These seemingly inconspicuous details actually determine its quality.
2. The reliability of the tact switch is also critical. In general, it is determined by the structure of the touch point, so the larger the touch area of ​​the touch surface, the better its reliability. On the contrary, if the touch area is small, its reliability will be poor. In addition, the quality of the tact switch can also be observed from the process bumps.
3. The touch and life of the tact switch are determined by its shrapnel and its stroke, so a light sound will enhance its service life, and a loud sound will shorten its service life.
4. If the touch switch is a touch-down resistor, then the material of its pins is brass or phosphor phosphor copper, and then it is silver plated. But pay attention to this point will affect the quality of the switch, so pay special attention to this point when buying.
Editor's summary: The above is about the elaboration of the touch switch , I hope to help friends. Although the tact switch is practical, it should be used reasonably in ordinary use, otherwise it will affect its service life.
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