Quartz watches are one of the types of watches. The use of quartz crystals in watches is a modern invention. The world's first quartz watch was made in Switzerland in July 1967. In 1969, quartz of Japan launched the world's first mass-produced quartz watch with its leading technology in the world, named "Quartz Astron".

Introduction of quartz watch:

When the quartz crystal is subjected to battery power, it vibrates regularly. A quartz crystal vibrates up to 32,768 times per second. One can design a simple circuit to count the number of times it vibrates, and when it counts to 32,768, the circuit will send out a message to move the second hand forward by one second.

Because quartz vibrates fairly regularly, even a cheap quartz watch will have an error rate of no more than 1 second in a day. Quartz watches work by using the vibration phenomenon of the quartz plate. When quartz receives an external applied voltage, it will deform and stretch. Conversely, if the quartz is compressed, electricity will be generated across the quartz. Quartz watches use crystals that continuously vibrate periodically to bring us accurate time.

Classification of quartz watches:

Quartz watches can be divided into digital quartz electronic watches, pointer quartz watches, automatic quartz watches and light-powered watches.

1. Digital quartz electronic watch: a watch that combines the piezoelectric effect of the quartz crystal and the diode-type liquid crystal display, and its functions are completely completed by electronic components.

2. Pointer quartz watch: The energy of the quartz watch comes from the silver oxide button battery. After the silver oxide button battery provides a specific voltage to the integrated circuit, the quartz oscillator is vibrated through the oscillator circuit and the quartz resonator to form an oscillator circuit source. An alternating bidirectional pulse signal is formed, thereby driving the stepper motor to rotate intermittently, and further driving the transmission gear train, so that the hands can accurately display the time.

3. Automatic quartz watch: It combines the advantages of automatic mechanical watch and quartz watch. It requires no batteries, and the wearer can choose between manual winding or automatic charging. Its operating principle is to use the dancing of the arm to drive the oscillating weight in the watch to generate energy to push the internal micro-motor into energy, thereby providing sufficient power for the quartz device in the watch.

4. Solar powered watch: converts light energy into electrical energy through solar chips, and stores the electrical energy in a recyclable titanium-lithium-ion rechargeable battery. Then the electric energy from the battery generates pulse signals to the coil through the integrated circuit, and generates a magnetic force to drive the stepping motor, which pushes the gear to rotate and drives the pointer to indicate the time.

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