Transducer makes for easy listening
Article Abstract:
Topexpress Ltd. has developed a new technology which will permit the production of cheaper microphones and flat panel loudspeakers. The acoustic transducer technology uses a piezoelectric plastic PVDF sandwiched between a conductive layer at the front and a resistive layer at the back. These materials work together to give a very short time constant at the centre, where there is a high frequency response, and a large time constant at the edge, where there is a high frequency response. This action makes the transducer behave like both small and large units and eliminates the need to have both.
Publication Name: Eureka
Subject: Engineering and manufacturing industries
ISSN: 0261-2097
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Drums roll lowest cost composites
Article Abstract:
New production techniques now mean that composites and fibre reinforced pre-pregs can be made at lower cost. A single layer of fibre wound onto a drum is cheaper to set up than continuous web techniques for making pre-pregs. Composites can be made by taking fibre-reinforced thermoplastic sheet and hot rolling it onto cellular reinforcement.
Publication Name: Eureka
Subject: Engineering and manufacturing industries
ISSN: 0261-2097
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
CAD specialists curry favour
Article Abstract:
The UK's Institution of Engineering Designers is recognising the trend towards mixed discipline teams and is actively targeting CAD specialists and similar engineering software experts to increase its membership.
Publication Name: Eureka
Subject: Engineering and manufacturing industries
ISSN: 0261-2097
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Ford makes its press lines safer. Prototyping enables more complex design. Test your investment-readiness
- Abstracts: Managers make training stick. Training? Don't waste your money. OJT doesn't mean "sit by Joe."(how to handle on-the-job training)
- Abstracts: Optimal production run for processes with constant and random drifts. A genetic algorithm method for one-dimensional machine location problems
- Abstracts: Three strategies for sound risk management. Working drawings: leading by example. Five legal consequences of sloppy drawings
- Abstracts: Carburisation makes it Just-in-Time. Side mounting makes it cool to be in control. Electricity makes for light work