摘要:
An apparatus and method for extracting maximum power from a solar cell are provided. The apparatus includes a solar cell for producing power from solar energy, a maximum power extractor for generating a pulse width modulation signal for extracting the maximum power from the solar cell, and a DC-DC converter for adjusting an amount of current generated from the solar cell according to the pulse width modulation signal.
摘要:
A piezoelectric microphone, a speaker, a microphone-speaker integrated device and a manufacturing method thereof are provided. The microphone-speaker integrated device includes a silicon substrate and an insulating layer deposited on the silicon substrate; a piezoelectric plate formed on the insulating layer; and a mating electrode formed on the piezoelectric plate. The mating electrode is patterned with a polarity arrayed in series.
摘要:
A piezoelectric microspeaker using microelectromechanical systems (MEMS) and a method of manufacturing the same are provided. The piezoelectric microspeaker includes a piezoelectric layer disposed on an elastic thin layer, and a resonance change unit patterned on one of a bottom surface of the elastic thin layer and a top surface of the piezoelectric layer.
摘要:
A piezoelectric microphone, a speaker, a microphone-speaker integrated device and a manufacturing method thereof are provided. The microphone-speaker integrated device includes a silicon substrate and an insulating layer deposited on the silicon substrate; a piezoelectric plate formed on the insulating layer; and a mating electrode formed on the piezoelectric plate. The mating electrode is patterned with a polarity arrayed in series.
摘要:
Provided are a micro-electromechanical systems (MEMS) microphone and a method of manufacturing the same. A manufacturing process is simplified compared to a conventional art using both upper and lower substrate processes. Since defects which may occur during manufacturing are reduced due to the simplified manufacturing process, the manufacturing throughput is improved, and since durability of the MEMS microphone is improved, system stability against the external environment is improved.
摘要:
Provided is an energy and power management integrated circuit (IC) device. The energy and power management IC device includes a plurality of energy conversion devices for harvesting energy from respective energy conversion sources and converting the energy into electric energy, an energy management IC (EMIC) for converting the electric energy converted by the energy conversion devices into stable energy, a storage device for storing the energy or power converted by the EMIC, a power management IC (PMIC) for receiving and distributing the power stored in the storage device, and a plurality of output load devices for consuming the power distributed by the PMIC. Accordingly, it is possible to harvest energy in an environmentally friendly way and semi-permanently use the energy without changing a battery.
摘要:
An apparatus and method for extracting maximum power from a solar cell are provided. The apparatus includes a solar cell for producing power from solar energy, a maximum power extractor for generating a pulse width modulation signal for extracting the maximum power from the solar cell, and a DC-DC converter for adjusting an amount of current generated from the solar cell according to the pulse width modulation signal.
摘要:
Provided is an energy and power management integrated circuit (IC) device. The energy and power management IC device includes a plurality of energy conversion devices for harvesting energy from respective energy conversion sources and converting the energy into electric energy, an energy management IC (EMIC) for converting the electric energy converted by the energy conversion devices into stable energy, a storage device for storing the energy or power converted by the EMIC, a power management IC (PMIC) for receiving and distributing the power stored in the storage device, and a plurality of output load devices for consuming the power distributed by the PMIC. Accordingly, it is possible to harvest energy in an environmentally friendly way and semi-permanently use the energy without changing a battery.
摘要:
Provided are a micro-electromechanical systems (MEMS) microphone and a method of manufacturing the same. A manufacturing process is simplified compared to a conventional art using both upper and lower substrate processes. Since defects which may occur during manufacturing are reduced due to the simplified manufacturing process, the manufacturing throughput is improved, and since durability of the MEMS microphone is improved, system stability against the external environment is improved.
摘要:
Provided are a flexible thermoelectric generator, a wireless sensor node including the same and a method of manufacturing the same. The flexible thermoelectric generator includes a plurality of P-type semiconductors and a plurality of N-type semiconductors, which are alternately arranged, an upper metal for connecting upper surfaces of the adjacent P-type semiconductor and N-type semiconductor, a lower metal for connecting lower surfaces of the adjacent P-type semiconductor and N-type semiconductor, and alternately disposed with respect to the upper metal, a P-type metal connected to at least one P-type semiconductor among the plurality of P-type semiconductors, and an N-type metal connected to at least one N-type semiconductor among the plurality of N-type semiconductors.