The first quartz electronic watch produced in Switzerland in 1967 has been on the market for forty years. In the long river of time, it is only a short time, but in the watchmaking industry, especially quartz electronics. The development of watches is very fast. From single travel time to human power, multi-function sports quartz electronic watch, perpetual calendar watch, time display of two places and electronic watch with moon phase display function, global satellite positioning system (G, P, S) quartz electronic watch, etc. . In the mid-eighties, due to the rise of Japanese quartz electronic technology, a large number of quartz electronic watches entered the market. The Swiss traditional watchmaking industry, especially the quartz electronic watches, suffered a great impact almost to the edge of collapse, but the Swiss watch industry always insisted on its own high precision. Pointy style. In the 1980s, the quartz crystal watch movements produced by the Swiss {ETA} movement manufacturer were: 255411, 255441, 255111, 976.001, 210.001, 282.001 and so on. The movement generally adopts a logic frequency modulation circuit, and the precision control system adopts concealed type. The precision control system is implemented in the IC circuit without manual adjustment of the accuracy of the circuit board, greatly improving the accuracy and stability of the circuit board, and completely changing the traditional manual. Adjust the drawbacks caused by trimming capacitors. The minimum operating voltage is also set in the circuit board IC circuit to start the RT test point, which is the main means to verify whether the mechanical drive train is working properly and the battery life is required to obtain important data. The IC circuit also adds a stepping motor pulse reduction type ASS and EOL device. The two-needle watch such as Omega, Radar, Longines, West Malaysia, etc. used in the ETA976.001 quartz watch movement IC circuit, the ASS device Change or conform to the pulse required by mechanical electrical energy to achieve the effect of power saving, and suppress the error value of the error value generated by the cycle. The correction of the error value by the special electronic chain pulse is uninterrupted, and the average power consumption is corrected. 0.6.uA/h, monthly error ±4~8s to achieve the purpose of suppression correction. Three-needle watches such as: Tudor, West Malaysia, Omega, Radar, Plum, Longine, etc. ETA255.411 quartz electronic watch movement IC circuit EOL energy exhaustion warning device, this device prompts 15 days in advance to indicate that the battery energy is exhausted There will be a four-second jump. In terms of mechanical drive train and splint processing, the 210.001 model movement produced by the Swiss ETA factory in 1983 is very delicate with gold-plated and rhodium-plated water-corrugated grinding. The thickness of the movement is only H0.98mm. Gear machining or splint machining is very difficult, but the accuracy and reliability of this type of movement is very good. I often encounter some technical problems in the process of repairing high-grade quartz watches. 1. The battery has been out of power for less than one year. Firstly, the battery factor should be excluded, such as the battery life limit. Secondly, the internal organs of the movement, the dryness of the lubricating oil, and the friction coefficient of the mechanical transmission system increase, which is caused by insufficient battery life. The main reason is that the movement should be cleaned and maintained. 2, slow walking has a phenomenon of stealing, mainly the movement of the internal organs, the surface of the rotor is metal-cut or there is a short-circuit inside the coil, which is necessary to replace the circuit board with the movement cleaning. 3. The fast travel time is mainly due to the change of the frequency of the quartz resonator in the circuit board. The reason is that the two pins of the quartz resonator are loose or the seal of the quartz resonator is not well sealed, which will change the frequency of the quartz resonator. Another is that there is a problem with the control accuracy system in the IC circuit, and it is also possible to change the resonant frequency of the quartz to replace the circuit board. 4, the second hand has a reverse phenomenon, which is mainly due to the deformation of the stator piece geometry or the internal changes of the stator piece material, so that the magnetic field line changes the pit positioning problem is the main reason for the second needle to fall away, the stator piece should be replaced. Disperse Print Microfiber Fabric Quilting Fabric,Polyester Twill Fabric,Printed Polyester Fabric,Polyester Spandex Fabric CHANGXING YONGXIN IMPORT AND EXPORT CO.,LTD , https://www.cxyxfabric.com
November 02, 2021