Magnetic Buzzer Circuit

A magnetic buzzer is a current driven device but the power source is typically a voltage.

Magnetic buzzer circuit.

It takes the advantage of loud sound widely used in computer printer copying machine alarm electronic toys timers and other samll electronics equpments and washing machine remote control coffee machine pcb borad ofo bicycle and so on. Magnetic active buzzer can make sound once supplied with power. I ll show you that in a upcoming tutorial stay connected. Magnetic buzzer electromagnetic buzzer hcm12x micro magnetic buzzer electromagnetic buzzer.

The coil is located in the magnetic circuit consisting of a permanent magnet an iron core a high permeable metal disk and a vibrating diaphragm. Our magnetic buzzer is designed to meet your specific technical and performance requirements. Simple buzzer using a single transistor just a single transistor a ferrite inductor and a piezo transducer that s all you will need to make this circuit buzz or rather twit for you with an output that may. Construction of a typical magnetic buzzer.

Magnetic buzzer magnetic buzzer structure and theory introduction. A little heating of the buzzer and transistor is normal specially if yo re running it with a higher voltage supply. Magnetic buzzer drive circuit built in type dc drive type leading manufacturer of magnetic buzzer for more than 15 years we have been specializing in providing buzzer magnetic buzzer and piezoelectric buzzer. In a magnetic buzzer the transistor acts as the driving circuit.

While this reduces power loss it does have the deficiency of reducing the voltage applied to the buzzer by about two diode drops or approximately 1 2 volts. Hcm12x pdf datasheet download pin termina type internal driven with oscillator circuit. Indicators include the transistor creating a tone when a dc voltage is applied. A buzzer is a high frequency oscillator circuit used for generating a buzzing sound through a transducer or speaker output.

This illustration highlights the structure of a typical magnetic buzzer. The current through the coil is determined by the applied voltage and the impedance of the coil. Hcm1203x hcm1205x hcm1206x hcm1212x applied to home appliance safety equipment etc for alarm. Like piezo technology magnetic buzzers are available in transducer and indicator configurations.

Piezo buzzers are used in similar applications as magnetic buzzers. The disk and diaphragm are attracted to the core by the magnetic field.