Why can world famous watches be recognized by the market? A large part of this comes from the quality, durability and accuracy of the watch, coupled with the beautiful and stylish design, the other electronic components on the watch will not be explained too much, it is important for us to discuss that this is a quartz timer crystal, Cylindrical Insert Crystal If a quartz timer crystal oscillator can be used normally, it must be operated correctly. Quartz timer crystal oscillator consists of quartz plate, electrode, bracket (base) or PKG, upper cover (LID), etc. During the soldering process of the quartz timer crystal oscillator, the solder temperature should not be too high. This time should not be too long to prevent internal changes in the quartz timer crystal and cause instability. When the crystal case needs to be grounded, make sure that the quartz timer crystal case and pins are not accidentally connected to cause a short circuit. This will prevent the crystal from vibrating. Make sure the solder joints of the two pins are not connected, otherwise it will cause the crystal to stop vibrating. For crystals that require cutting feet, attention should be paid to the effects of mechanical stress. When welding, please clean it to avoid the insulation resistance does not meet the requirements. Don't underestimate such small quartz timer crystal oscillators, they are a complex body in the production process. From design to production, every crystal oscillator goes through many processes and a lot of effort to polish the wafer. It's not easy to hold something a few millimeters in size with tweezers. All the built-in quartz crystal oscillators they produce have to go through more than 30 processes to complete the production in the factory, of which 9 main items are international standards for finished product inspection. First clean the wafer, silver the wafer, put glue on the shelf, fine-tune the wafer, test, dehumidify, seal, insulate, burn-in, and test after burn-in, laser printing, packaging is also very complicated, after these treatments After that, the quartz timer crystal oscillator is considered complete.

The function of the speedometer is to display the speed of the vehicle at any time, so that the driver can grasp the driving speed and ensure driving safety. It records vehicle mileage and provides reliable data for timely vehicle maintenance. The speedometer is mainly composed of a worm gear pair, a flexible shaft device, a speedometer device and a counter. The worm gear pair is combined with the countershaft in a motorcycle gearbox or the front hub of a moped. One end of the soft auxiliary device is connected with the worm gear pair, and the other end is connected with the drive shaft. The permanent magnet is fixed on the drive shaft and rotates with the drive shaft, which is equivalent to a set of coils with a metal cover covering the outer periphery of the permanent magnet. There is no connection between them, and there is a certain gap. The speedometer pointer is fixed on the upper end of the pointer shaft, and the lower end is fixed with the rotation center of the metal cover. The hairspring is installed under the indicator plate. The hairspring allows the speedometer needle to swing smoothly and return to its original position in time. The worm gear housing prevents mud, sand, water and dust from falling into the worm gear pair. When the moped is running, the front wheel drives the worm gear pair, the flexible shaft, the drive shaft and the permanent magnet to rotate. At this time, the magnetic line of force cuts the metal coil, causing the coil to generate an induced current to form a magnetic field, which interacts with the magnetic field of the permanent magnet, causing the metal coil to rotate, and the metal rotating coil is damped by the hairspring. When the torque of the metal coil is equal to the damping torque of the hairspring, the speedometer needle displays a specific value to indicate the driving speed. The higher the speed, the faster the permanent magnets spin, the stronger the torque produced, and the greater the swing angle of the speedometer needle driven by the metal coil. When the vehicle speed decreases, the rotation speed of the permanent magnet decreases, the induced magnetic field generated in the coil weakens, the torque becomes smaller, and the swing angle of the speedometer pointer becomes smaller under the action of the hairspring. If the car stops, the permanent magnets also stop rotating. The induced magnetic field in the coil disappears and the speedometer needle returns to the zero position driven by the hairspring.

The function of the meeting timer You can arbitrarily set the speaking time (up to 99 minutes and 59 seconds), and set the reminder time of the conference instrument (in minutes, 1-99 minutes). Applicable occasions of meeting timer: Meeting venues, conferences, debates, defense meetings and other occasions where reminders of meeting time are required. Function: Reminder 10 seconds ago, optional remote control function, conference timer, debate timer, conference timer, reminder before N seconds, single-sided or double-sided, with tripod optional; Conference timer operation instructions: Description of remote control and buttons: "Start" button (1), "Minutes" button (3), second button (4). Setting time: If you want to increase the setting time, you can press the plus minute button (3)/plus second button (4) to adjust the time. Once set, press the start key (1) to start the countdown timer. Reset and clear: long press (more than three seconds) the start button (1), reset and clear, the display is 00:00. Countdown pause: During the countdown, press the plus key (4) to pause, then press the start key (1) to restart the countdown from the paused time. Retime: Briefly (less than three seconds) press the start key (1) to restore the last set time. Reminder: When the time reaches the set remaining time of 1 minute, a beep will sound. When the set time is up (the timer shows 00:00), the doorbell will ring to remind you. The meeting timer provides a unique and novel speech mode for the meeting, and at the same time creates a good hosting environment for the host. The popularity is gradually increasing. Tianjin Sun Precision Technology Co., Ltd. specializes in the production of racing timers, conference timers, countdown cards and standardized technical advantages and high-quality service attitude is your best choice for purchasing timers.

Electronic reversible counters are non-reversible electronic counters designed and manufactured for industrial automation without presetting. It is mainly suitable for occasions where the count moves forward and backward repeatedly. For example: winding various coils or calculating the length of wires and cables, etc. Sometimes several turns are required when winding. At this point, the instrument can automatically subtract the backward digits. Therefore, it can be widely used in a series of production processes with reciprocating processes, such as automatic winding, paper making, coil processing, wire and cable length measurement, films, plastics, etc. With the development of the times, electronic counters are also developing towards the intelligent direction of the Internet. With the rapid development of computers and the Internet to the world, counters also begin to develop to the network, such as: counter automation, multi-counter network, multimedia, virtual instrumentation and so on. Combined with the latest technological equipment, it can directly control instrumentation, company management, business integration and application model analysis through WAN and LAN. Counter companies communicate directly with customers through a web platform, breaking through the limitations of the world and space, exchanging information directly on the website, and maintaining and analyzing instruments remotely by experts. High-tech products followed. With the parallel development of microprocessor and artificial intelligence technology, this has enabled the counter industry to develop intelligence, that is, meters for intelligent robots. This intelligent development is also accompanied by the digitization of technology and an increase in the level of intelligence. Increase and increase faster, which will make people's lives easier. Technology can make the counter table go in the direction of miniaturization: In order to make life more convenient, scientific and technical personnel will develop counters in a smaller direction. Just like the development of computers, a small chip can store thousands of commands, which not only reduces the size. This also improves the accuracy of the counter, and this error does not affect production requirements.

Motorcycle hour timer refers to a meter that records the actual working time and various consumption of various construction machinery such as bulldozers, excavators, loaders, etc., as a basis for determining the use, maintenance, repair time and fuel consumption of the machinery . Products that combine mechanical and electronic technology. The Home Motorcycle Hour Counters were originally developed for home machinery without a timing part, so they are all external. It is understood that there are currently two main types of household timers. One is a timepiece with a quartz clock as the movement. The advantages are accurate timing and simple structure. The disadvantage is that it is difficult to eliminate the human interference factor. The battery needs to be replaced frequently during use, and the installation is also better. Trouble; the other is the combination timer, which has the advantage of being fully functional and conducive to the development of the main body. The disadvantage is that as an external timer, some functions are duplicated with the original instrument on the machine, the cost is higher, and the human factor is difficult to find. This motorcycle hour timer adopts the principle of combining the electronic circuit with the mechanical structure, that is, the electronic circuit is responsible for the connection, realizes the detection, conversion and amplification of the mechanical power information, and generates the time reference signal, and the mechanical structure is responsible for the accumulation, storage and display circuit. mechanical working hours. In order to realize the above-mentioned principle, the utility model consists of four parts. The first part is the control circuit, which is responsible for the connection to the machine. It ensures that the timer works synchronously with the mechanical device under test, and generates an accurate time signal and converts it into a narrow pulse, thereby driving the relay to pick up and control the action of the drive mechanism. The second part is the connecting part between the control circuit and the transmission assembly - the drive mechanism. Its key function is to accurately transmit the timing command input from the control circuit to the gearbox assembly, so that the wheel group in the gearbox assembly correctly reflects the mechanical working time of the electric motor. The third part is the transfer component that implements time display, accumulation and storage. The fourth part is a special locking device, which can prevent human interference, so that the timer can objectively reflect the working time of the mechanical equipment.