Electronics Technology


Piezo ceramic speakers

20 November 2002 Electronics Technology

Based on the development and production of the company's SCS series, Sonitron improved on the frequency characteristics of its piezo speaker system for more flatness in the frequency response curve. The SPS series are based on a sandwich construction of a specially-shaped piezo ceramic disk and a composite polymer membrane. The complex polymer membrane reduces resonance peaks and converts vibrational energy into a highly damped frequency response curve with low distortion. The speakers are very flat in design. They can be delivered with open front and mountable against the panel inside a closed unit in which sound holes are provided. The sound output pressure is created through air holes in the front on which the speakers are mounted.

The piezo speaker has 60% more net sound output per membrane surface than an electro-dynamic speaker with respect to the average current drain and average sound pressure level. They have high sound quality and they can be used in difficult environmental conditions and applications because of the resistance of the front to water, humidity, vibration and dust.

Applications are found in mobile communication equipment such as GSM, WAP, GPRS, flat LCD computer screens and computer monitors, car radio sound systems, instrumentation, portable sound reproduction devices, public address systems, paging systems, etc.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Nanometre-precision piezo actuators
RS South Africa Electronics Technology
TDK Corporation has announced two new piezo actuators that are characterised by a wide dynamic range, a high force-to-volume ratio, but with precision in the nanometre range.

Read more...
Webinar: The evolving electrification of the power distribution system
Infineon Technologies Electronics Technology
New connected car functionality, along with the necessity to reduce the cost, weight and complexity associated with wire harnesses, has led to the transformation of the power distribution system in automotive engineering.

Read more...
Improved MnZn material for power conversion industry
Sivan Electronic Supplies Electronics Technology
Cosmo Ferrites Ltd, a leading manufacturer of soft ferrites, has launched an improved version of CF295 for the power conversion industry.

Read more...
Common mode filter for automotive Ethernet
Avnet Abacus Electronics Technology
TDK Corporation has announced the introduction of its new ACT1210E Series common mode filter for automotive Ethernet 10BASE-T1S.

Read more...
Energising the industrial edge
Electronics Technology
As if the drive to decarbonise energy as part of sustainability and climate change efforts was not enough, the recent rise in energy prices has brought into sharp contrast the need to re-examine how we generate, distribute, and consume electricity.

Read more...
Samsung begins chip production using 3 nm process technology
EBV Electrolink Electronics Technology
The optimised 3 nm process with GAA architecture achieves 45% lower power usage, 23% improved performance and 16% smaller surface area compared to 5 nm process.

Read more...
Panasonic releases its updated touch-sensitive knob
Altron Arrow Electronics Technology
Panasonic, in conjunction with Microchip, has launched an update to its existing Magic Knob, a capacitive knob ready for standard touch sensors for use in controlling automotive information displays.

Read more...
Microchip’s new IC to replace Hall effect position sensors
Altron Arrow Electronics Technology
The LX34070 IC from Microchip is set to help accelerate the global move away from expensive and less accurate magnet-based solutions for safety-critical EV motor position monitoring.

Read more...
A brief history of HBTs
Conical Technologies Electronics Technology
In 1947 the engineers at Bell Labs were tasked with developing a transistor. This development heralded the beginning of the semiconductor industry which changed the world forever. Transistors would have ...

Read more...
Research project achieves major advance toward fusion energy
Electronics Technology
New superconducting magnet designed by MIT breaks magnetic field strength records, paving the way for practical, commercial, carbon-free power.

Read more...