Manual piezoelectric ceramic type doorbell

The utility model?discloses a piezoelectric ceramic?type doorbell. The doorbell mainly?comprises a piezoelectric ceramic?power?generation module?(1),?a rectifier module (2),?a filter module?(3),?an amplifying circuit module?(4),?a voltage stabilizing circuit module?(5),?a music module?(6),?and a loudspeaker (7). A button on the piezoelectric ceramic?power?generation module?(1) is forcibly pressed, electric charge is generated by the piezoelectric material under the action of external force and passes through a series of rectification, filter, amplification and voltage stabilization process circuits to drive the music module (ICI) and the loudspeaker, and make them normally work. The doorbell is characterized in that: the external power supply is not needed, and compared with the traditional electronic doorbell, a dry battery or a button lithium battery is not needed, the doorbell has a certain economic benefit, the energy source is saved and the pollution of battery on environment is reduced, so as to indeed achieve the purpose of energy-saving, emission-reduction and low-carbon life. Compared with the knock vibration type electronic doorbell, the misjudgment caused by ringing of the doorbell when the door is opened or closed by user is ruled out.