On 12 November, electronica 2024 opened in Messe München, Germany.AUDIOWELL released the all-copper electrode piezoelectric buzzer on the spot, and exhibited innovative products and solutions in many fields such as intelligent robotics and intelligent industry on the same stage. The exhibition aimed to show more possibilities of intelligent development in various industries through the advanced sensing and execution technologies.
All Copper Electrode Piezo Buzzer Officially Released
AUDIOWELL's all-copper electrode piezoelectric buzzers operate on the basis of the piezoelectric effect of the all-copper electrode piezoelectric ceramic sheet inside: when an AC voltage is applied, the piezoelectric ceramic sheet generates a corresponding mechanical vibration, which produces sound. Driven by the same voltage, the all-copper electrode piezoelectric buzzer has a better frequency response curve and higher loudness than conventional piezoelectric buzzers with silver electrodes.
Technical innovation point: all copper electrode!
The product is the same as other piezoelectric buzzer operating principle on the market, but its internal piezoelectric ceramics using all copper electrodes, greatly reducing the cost of raw materials procurement and production process, and can withstand high voltage per millimetre kilo-volt, compared with the use of silver electrodes of the piezoelectric buzzer is more reliable, expanding the scope of application of piezoelectric buzzer, not only applicable to smoke alarms, but also for high-voltage environments for use in various types of equipment Alarm systems.
Cost-effective
In terms of metal recycling, silver recycling requires a complex chemical treatment process; copper is commonly used in industrial applications and the recycling process is relatively simple. On the other hand, the sintering temperature of copper is lower than that of silver, which means that copper consumes less energy during the sintering process, making the production of piezoelectric buzzers with copper electrodes more cost-effective.
From the price point of view, copper is less expensive than silver, the use of all-copper electrodes piezoelectric buzzer to replace similar products, you can avoid the problem of rising international silver prices brought about by the increase in the cost of mass production.
Silver prices have risen 42 per cent this year, with the highest increase approaching 50 per cent, reaching the highest point in 12 years, with the current spot silver price at around $34 per ounce. The world silver association predicts that in 2024 the global demand for silver will exceed 36,700 tonnes, while the supply can only increase to 31,700 tonnes, the supply and demand gap, investment promotion, industrial demand increase and other factors will continue to push up the price of silver.
Highly reliable
With the development of miniaturization of piezoelectric actuators, the required driving voltage strength has increased to 1000-3000 volts/mm. However, silver or silver-palladium electrodes are susceptible to ion migration at high voltages, affecting performance. Although bias voltages (e.g., 300 volts forward, 100 volts reverse) can enhance the effect, they accelerate ionic migration, leading to a drop in withstand voltage and the risk of short-circuiting, affecting product life and reliability.
In order to solve the above problems, AUDIOWELL independent research and development of all-copper electrode piezoelectric ceramics suitable for high-pressure environment. It is driven under high temperature, high pressure and high power conditions, with stable performance of copper electrode, no migration channel (neither ion migration phenomenon), stable amplitude, and high sound pressure output can be maintained under high pressure environment, which effectively ensures the reliability and life of the all-copper electrode piezoelectric buzzer.
More highlights online
At the exhibition site, AUDIOWELL also displayed innovative products and solutions with ultrasonic technology, piezoelectric technology and PMUT technology as the core, covering a wide range of application areas such as automotive electronics, smart meters, smart security, smart robots and smart industry.
Many industry visitors showed great interest in the ultrasonic lead-free flow metering solution, energy metering - PMUT solution and UQD, and after experiencing the demonstration functions on-site, they praised them for their intelligent features as well as their practicality.
electronica 2024 is in full swing, and AUDIOWELL is looking forward to sharing with you more possibilities for a smart future.
AUDIOWELL Booth Information
Date: 12-15 November 2024
Location:Messe München, Germany
Booth number:B3.550
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