Alarm piezo1/8/2023 Plus, since they can be mounted on circuit boards, they’re highly useful in a wide range of applications and assemblies.ĭespite different construction methods that affect the cost of piezo buzzers, all of our prices are highly competitive. Regardless of the model you choose, our piezo buzzers offer high sound outputs. Yet at the same time, depending on the piezo ceramic buzzer specifications, it’s also reliable and can be constructed in a wide range of sizes that work across varying frequencies to produce different sound outputs.įor instance, at APC International, Ltd., we offer piezo buzzers without signal generators, self-oscillating buzzers that have signal generators and even multi-tone sound generators - often used in alarms and sirens. It’s lightweight with a simple construction, and it’s typically a low-cost product. In simplest terms, a piezo buzzer is a type of electronic device that’s used to produce a tone, alarm or sound. ^^ Excluding tabs 27.5 ☐.5 w/ tabs (center to center) What Is A Piezo Buzzer? *** 4.0 kHz / 10 cm / 12 Vp-p square wave Rated Voltage: 12 VDC (KPT-1410: 12 Vp-p square wave) Please contact APC today to learn more about our piezo buzzer products.Values to be Determined by Customer and APC International Our piezo buzzers come in a range of sizes and configurations for many applications, from self-oscillating buzzers to multi-tone sound generators. If you’re considering piezo buzzers in your application, please contact APC International to discuss your needs.Īt APC International, we offer a variety of piezo buzzer options to meet your needs. Each application is unique, so deciding based on your specific application is critical. They do not include a built-in driving circuit, which means that engineers have more flexibility in their design to modify or optimize the frequency in their application.Īll of these factors are important to consider when choosing between piezo and magnetic buzzers. They also operate with lower operating voltages but high current requirements.Īnother thing to consider for extremely custom applications are audible sound transducers.Īudible Sound Transducers: Transducers consist of a casing, typically a piezo element, and an electrical contact. Magnetic buzzers: Magnetic buzzers have smaller frequency ranges and SPL values and lower resonant frequencies than piezo buzzers. Piezo buzzers also have higher operating voltages and lower current requirements. Piezo buzzers: Piezo buzzers have larger frequency ranges and SPL values, as well as a high resonant frequency. First to consider are the electrical and physical parameters of each buzzer type. Below is a summary of the specs for each buzzer type: magnetic buzzers for a given application, it’s essential to consider all specifications. As a result, piezo buzzers tend to have a wider range of usable frequencies than magnetic buzzers. Generally speaking, piezo buzzers tend to exhibit a more linear relationship between the input frequency and output audio power, while magnetic buzzers tend to have a less linear relationship. This is usually expressed by plotting the SPL vs. The SPL value, will vary depending on how far away from the buzzer the measurement is taken.įrequency response: Frequency response is a measurement of how efficiently a buzzer can produce sound energy at a given frequency. It is typically expressed in pascals or decibels and is proportional to the input voltage. Sound pressure level: The sound pressure level (SPL) is the deviation from atmospheric pressure caused by a soundwave. Piezo buzzers tend to have a higher resonant frequency when compared to magnetic buzzers. By driving a material at its resonant frequency, the material will produce the loudest sound with the least input power. This specific frequency is called the resonant frequency. Resonant frequency: Every material has a specific frequency at which it tends to vibrate - for example, the G-string on a properly tuned guitar will vibrate at the frequency of a G-note when plucked. The sound specification for each type of buzzer must also be taken into account and are briefly discussed below-īefore diving into details, we must first define some core concepts: As discussed previously, magnetic buzzers operate at lower voltages and higher currents than piezo buzzers, but this is not the only thing to consider. When needing to decide between a magnetic buzzer or a piezo buzzer, the choice often comes down to the key specifications of each buzzer type as well as any drive circuit limitations in situ.
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