Buzzer for timepiece

Abstract

The invention discloses a buzzer for a timepiece. The buzzer comprises a timepiece body; and a dry battery is installed inside of a shell of the timepiece body and is connected with a power switch arranged at the surface of the shell of the timepiece body by a lead. A cover shell coats the timepiece body. A pin post is installed on a main buzzer body. A base electrode is arranged at one end of analarm chip and is connected with a variable resistor by a lead. A single-pole crystal oscillator is arranged at one side of a triode; and two binding posts are fixed on the single-pole crystal oscillator. An oscillator and a frequency conversion controller are respectively connected in series at a branch of the main buzzer body; and the main buzzer body is connected in series with a main power supply by a circuit. According to the invention, with the triode, the alarm chip, the single-pole crystal oscillator, the frequency conversion controller, and a fuse resistor, a problem that the existingtimepiece buzzer serving as a signal input only makes one kind of sounds that are plodding and thus the user can not feel comfortable can be solved.

Description

technical field [0001] The invention relates to the technical field of production and manufacture of buzzers, in particular to a buzzer for clocks and watches. Background technique [0002] The buzzer is an electronic sounder with an integrated structure. It is powered by DC voltage and is widely used as a sounding device in electronic products such as computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, and timers. . Buzzers are mainly divided into two types: piezoelectric buzzers and electromagnetic buzzers. The piezoelectric buzzer is mainly composed of a multivibrator, a piezoelectric buzzer, an impedance matching device, a resonance box, and a casing. Some piezoelectric buzzer housings are also equipped with light-emitting diodes. Multivibrators are built from transistors or integrated circuits. When the power is turned on (1.5~15V DC working voltage), the multivibrator starts to oscillate and outputs an audio signal of...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a buzzer for clocks and watches, which solves the problem that when a signal is input to the current clock buzzer, the buzzer can only emit one sound, and the sound is monotonous and boring, which cannot make the user feel comfortable etc.

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