A Constant-Power Inductive-Coupling Transmitter Using Auxiliary Driving Technique in 65nm SOTB CMOS for Low-Power Supply-Sensing Biosensing Platform toward Healthcare IoTs

2018 ◽  
Author(s):  
Yuya Nishio ◽  
Atsuki Kobayashi ◽  
Kiichi Niitsu
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Inductive Coupling ◽  
Constant Power

AlInAs/GaInAs on InP HEMTs for low power supply voltage operation of high power-added efficiency microwave amplifiers

1993 ◽  
Vol 29 (15) ◽  
pp. 1324 ◽  
Author(s):  
L.E. Larson ◽  
M.M. Matloubian ◽  
J.J. Brown ◽  
A.S. Brown ◽  
M. Thompson ◽  
...  
Keyword(s):  
Low Power ◽  
High Power ◽  
Power Supply ◽  
Supply Voltage ◽  
Power Supply Voltage ◽  
Power Added Efficiency ◽  
Microwave Amplifiers

scholarly journals A Low Power AC/DC Interface for Wind-Powered Sensor Nodes

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1823
Author(s):  
Mohammad Haidar ◽  
Hussein Chible ◽  
Corrado Boragno ◽  
Daniele D. Caviglia
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Energy Harvester ◽  
Optimization Techniques ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Constant Voltage ◽  
Interface Circuit ◽  
Switching Converter ◽  
Input Signals

Sensor nodes have been assigned a lot of tasks in a connected environment that is growing rapidly. The power supply remains a challenge that is not answered convincingly. Energy harvesting is an emerging solution that is being studied to integrate in low power applications such as internet of things (IoT) and wireless sensor networks (WSN). In this work an interface circuit for a novel fluttering wind energy harvester is presented. The system consists of a switching converter controlled by a low power microcontroller. Optimization techniques on the hardware and software level have been implemented, and a prototype is developed for testing. Experiments have been done with generated input signals resulting in up to 67% efficiency for a constant voltage input. Other experiments were conducted in a wind tunnel that showed a transient output that is compatible with the target applications.

scholarly journals Research on anode power supply of low-power Hall thruster

2021 ◽  
Vol 1754 (1) ◽  
pp. 012167
Author(s):  
JIA Hangyu ◽  
QU Chengzhi ◽  
JI Yuhui ◽  
ZHOU Guangrui ◽  
WU Suliang
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Hall Thruster

A calibration-free low-power supply-pushing reduction circuit (SPRC) for LC VCOs

2017 ◽  
Author(s):  
Muhammad Swilam ◽  
Ahmed Naguib ◽  
Brian Dupaix ◽  
Waleed Khalil ◽  
Ayman Fayed
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Calibration Free

scholarly journals An Isolated Power Factor Corrected Cuk Converter with Integrated Magnetics for Brushless DC Ceiling Fan Applications

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1720
Author(s):  
Hashim Raza Khan ◽  
Majida Kazmi ◽  
Haris Bin Ashraf ◽  
Muhammad Hashir Bin Khalid ◽  
Abul Hasan ◽  
...  
Keyword(s):  
Low Power ◽  
Power Factor ◽  
Power Supply ◽  
Failure Modes ◽  
Torque Ripple ◽  
Current Loop ◽  
Motor Torque ◽  
Cuk Converter ◽  
Integrated Magnetics ◽  
Home Appliances

The usage of BLDC motors in the low-power range is increasing rapidly in home appliances such as ceiling fans. This has necessitated the development of reliable, compact and efficient AC-DC power supplies for motor drive circuitry. This paper presents a power supply design consisting of an AC-DC isolated PFC Cuk converter with integrated magnetics that supplies a single-shunt voltage source inverter for the sensorless drive of the BLDC fan motor. The proposed power supply design is comprised of an integrated magnetics structure in which the two inductors and the transformer windings share the same core. The zero input and output ripple current conditions have been derived from the reluctance model of the magnetic assembly. Smooth operation of the motor by minimizing the motor torque ripples is evident from the results. The Cuk converter operates in continuous conduction mode (CCM), employing the current multiplier method. The CCM-based current multiplier control loop ensures a near-unity power factor as well as low total harmonic distortion in the supply current. The current loop also provides over-current protection, enhancing reliability of the system. Moreover, the speed of the BLDC motor is controlled by the field oriented control (FOC) algorithm, which enables direct operation with alternate energy sources such as batteries and solar photovoltaic panels. The performance of the proposed supply is validated: motor torque ripple is reduced to only 2.14% while maintaining 0.999 power factor and only 4.72% THD at full load. Failure modes analysis has also been performed through software simulations, using the PLECS simulation environment. Due to the reliable power supply design with low ripples, it is well suited for low-power BLDC motors in home appliances and small power tools, in addition to ceiling fans.

scholarly journals Ultra-Low Power CMOS Readout for Resonant MEMS Strain Sensors

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 973
Author(s):  
Marco Crescentini ◽  
Cinzia Tamburini ◽  
Luca Belsito ◽  
Aldo Romani ◽  
Alberto Roncaglia ◽  
...  
Keyword(s):  
Low Power ◽  
Power Supply ◽  
First Generation ◽  
Negative Resistance ◽  
Low Noise ◽  
Strain Sensors ◽  
Current Conveyors ◽  
Ultra Low Power ◽  
Active Elements ◽  
Low Power Cmos

This paper presents an ultra-low power, silicon-integrated readout for resonant MEMS strain sensors. The analogue readout implements a negative-resistance amplifier based on first-generation current conveyors (CCI) that, thanks to the reduced number of active elements, targets both low-power and low-noise. A prototype of the circuit was implemented in a 0.18-µm technology occupying less than 0.4 mm2 and consuming only 9 µA from the 1.8-V power supply. The prototype was earliest tested by connecting it to a resonant MEMS strain resonator.

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