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What are the working principles of electromagnetic buzzer

2021-12-14

The alternating current signal of the electromagnetic buzzer generates alternating magnetic flux on the rod of the bracket through the wire wound on the bracket. The alternating magnetic flux overlaps with the constant magnetic flux of the magnet ring, so that the molybdenum sheet vibrates at the specified frequency of the alternating current signal. Together with the resonator to produce sound, then, let's learn about the working principles of the electromagnetic buzzer!

The difference between active buzzer and passive buzzer

2021-11-29

The buzzer is a commonly used pronunciation device, which is commonly used in the microcontroller experiment board and children's toys. Is it distinguished from the sound? Some only emit sounds of a certain frequency, while others emit clear sounds. So, let's understand the difference between active buzzer and passive buzzer!

What is the passive buzzer?

2021-11-15

Passive buzzer is a kind of internal no oscillation source of the buzzer, is the circuit with graphic symbol h or HA integrated electronic buzzer.

Passive buzzer buzzer related knowledge

2021-10-29

A passive buzzer is an integrated structure electronic sounder, powered by a DC voltage. It is widely used as a sound generating device in computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers and other electronic products. Passive buzzer is mainly divided into two kinds: piezoelectric buzzer and electromagnetic buzzer. The buzzer is represented by the letter "h" or "HA" in the circuit.

How to test the sealing performance of speakers for electronic products?

2021-10-26

Now many consumer electronic products, such as mobile phones, tablets, etc., basically have waterproof function. In order to ensure the overall waterproof performance of consumer electronic products such as mobile phones and tablets, manufacturers usually conduct waterproof tests on accessories that are more likely to be in contact with water to ensure a tight seal. As a kind of sound electronic equipment, speaker is an important part of some consumer electronic products.

How to analyze the SMD buzzer if it fails?

2021-05-14

Changzhou fuhongda electronic SMD buzzer introduces how to analyze the buzzer if it fails? Buzzer (Buzzer) has the advantages of simple structure, compact structure, small size, light weight, low cost, etc. The pronunciation range is generally hundreds of Hz to tens of kHz, in various electronic equipment (air conditioners, washing machines, computers, etc.), the buzzer is represented by "h" and "HA" (old standard "FM", "LB", "JD", etc.) in the circuit mode symbol.

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