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Hot air gun

Views:0     Author:Site Editor     Publish Time: 2020-09-15      Origin:Site

Hot air gun

The hot air gun mainly uses the hot air blown from the core of the heating resistance wire to weld and remove the components. According to the working principle of the hot air gun, the main part of the hot air gun control circuit should include temperature signal amplification circuit, comparison circuit, thyristor control circuit, sensor, wind control circuit, etc. In addition, in order to improve the overall performance of the circuit, some auxiliary circuits should be provided, such as a temperature display circuit, a shutdown delay circuit and a zero-crossing detection circuit. The temperature display circuit is set to facilitate temperature adjustment. The temperature displayed by the temperature display circuit is the actual temperature of the circuit, and workers can manually adjust it according to the temperature displayed on the display during operation.

The hot air gun is one of the most used tools in mobile phone repair, and the process requirements used are also very high. From removing or installing small components to large integrated circuits, hot air guns are used. In different occasions, there are special requirements for the temperature and air volume of the hot air gun. Too low temperature will cause false soldering of components, and too high temperature will cause the worst components and circuit boards. If the air volume is too large, the small components will be blown away. At the same time, the choice of the heat gun is also very important. Do not choose a low-grade heat gun because of the price.



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