How to choose the length of the clock of the quartz wall clock? 1. Remove the old pointer and measure the length of the needle, (from the center round hole of the minute hand to the top), The size of the hour hand is determined according to the size ratio of the minute hand, and…
The alarm clock generally bears the mission of calling us to get up. If our alarm clock is broken, we can’t continue its mission. How can we repair the alarm clock? A second-hand falls off, the alarm is out of order Disassembling the alarm clock is a simple and sophisticated product that is relatively easy…
It also includes two systems: travel time and trouble. 1 travel time system: the travel time system of the pointer type quartz electronic alarm clock includes quartz resonator, CMOS integrated circuit (frequency division and drive), stepper motor (converting electrical energy into mechanical energy), counting and transmission mechanism, pointer mechanism, and other components; digital The timing…
The floor clocks were in the 14th century. They were introduced to China from the West in the 17th century. Foreign families usually have floor clocks. In China, there are not many families visiting the floor clock. The price of the floor clock is generally high, ranging from one thousand yuan to several hundred thousand…
1. First， wipe the bell seat with glue or pull on the double-sided tape; 2. Then align the 12 o’clock position of the clock face with the vertical position of the bell seat hook; 3. Put the wall clock movement into the bell seat and fasten or lock it; 4, then to the wall clock…
Wall clocks are needed in general homes. Today, Xiaobian will share how to install our wall clocks and install our Nordic-style clocks. 1. First，prepare our accessories, there is a host, there are hanging, there are decorations 2. We first put our decorative antlers into our card slots and insert them with our transparent sheets. It…
How to set the alarm clock The method of setting an alarm for an alarm clock is very simple. It is divided into mechanical and electronic. 1. The mechanical alarm clock has an alarm time indication pointer, and the rotary alarm knob rotates the pointer to the wake-up time. 2. The electronic alarm clock needs…
The quartz alarm clock can also be called a “crystal vibration electronic watch” because it uses the “vibration phenomenon” of the crystal wafer. When the crystal receives the external force voltage, it will have the property of deformation and expansion. On the contrary, if the crystal is compressed, it will generate electricity at both ends…
In 1088, the Song Dynasty scientists Su Shi and Han Gonglian and others made the water transport instrument platform, which is a device that combines funeral, scorpion and mechanical timers. It uses hydraulic power as the power source and has a scientific escapement. It is about 12 meters high and seven meters square. It is…
Before 1300 AD, humans mainly used astronomical phenomena and continuous movement of flowing materials to time. For example, the sundial is the azimuth timing of the sunshade; the leaking pot and the hourglass are flow meters that utilize water flow and sand flow. In the Eastern Han Dynasty, Zhang Heng made a leaking water switch…