The quartz crystal used in watches is a modern invention. The first quartz watch first appeared in 1969. In that year, Japan’s Seiko Corporation discovered how to made ​​of quartz tuning fork method. The first production quartz watch is a Seiko into 35 square astronomy, released in 1957 by the Hamilton Watch Company of Lancaster, Pennsylvania.

Vibration of quartz watch

Like the Tuning fork follow some discipline to vibrate, when the the quartz crystal are affected by battery power, it will also have the law of vibration. The number of quartz crystal vibrations per second up to 32768 times, we can design a simple circuit to calculate the number of its vibrations, the number to 32768 times when it is, the circuit will spread the message, so that the second hand go forward second. Because the vibration of quartz has the discipline, even cheap quartz watch, error rate of one day will not exceed one second.

How the quartz watch works

Quartz can also be called “crystal vibrating electronic form”, because it is the use of crystal films “the oscillation phenomenon”. When the crystal receives an external afterburner voltage, there will be the nature of deformation and stretching, on the contrary, if the compressed crystal, the crystal will produce electricity at both ends; this nature is also in many crystals can be seen, known as the “piezoelectric the effect”. Quartz watch is the use of periodic continuous “oscillation” of the crystal, gives us the exact time.

What quartz watch work like?

First, get the power on the crystal chip of quartz watch, Crystal will be the number of cycles to 32768 Hz, correctly vibration; this frequency must then be turned into 1Hz (current snap a change) of the signal current cycle number. To increase the magnitude of these signals (due to the current produced by vibration is very weak), followed by some signal current to mount the rotor gear, along with the table on the second hand will start, after the minute hand, hour hand on the beating is related to the mechanical structure of principles, such as: beat 60 seconds, the minute hand will jump. All are equipped with a quartz watch battery, it is an integrated circuit and a quartz resonator to provide energy, vibration 327,678 times per second. What could be faster. IC is a form of “brain”. It controls the vibration of the quartz resonator, and also plays the role of divider. 32768 times the vibration was split in half 15 times to produce one pulse per second.