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This paper presents a self-energized acoustic wireless sensing method for simultaneous measurement of pressure and temperature within the cavity of an injection mold and wireless transmission of the measured parameters out of such a metallically shielded environment through ultrasound pulse trains. Two attributes of the ultrasound pulses have been explored to enable dual-parameter sensing: the number...
This paper deals with the performance improvement of a resonant pressure sensor designed for MHz range and realised in the LTCC (low temperature co-fired ceramics) technology. A new upgraded and modified sensor model residing on an analytical concept is demonstrated. Based on this model, sensitivity of the sensor could be drastically increased only by a change of the cylindrical cavity radius which...
As the wide scale usage of aluminum electrolytic capacitors it is very important to be familiar with them. The research and development of new and long sight better capacitors is very essential for circuit designers and costumers in general hence this is a very important issue to deal with. In the presented paper a summarize of the buildup and the useful life of the capacitors and a special procedure...
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