scholarly journals A High-Voltage and Low-Noise Power Amplifier for Driving Piezoelectric Stack Actuators

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6528
Author(s):  
Lisong Xu ◽  
Hongwen Li ◽  
Pengzhi Li ◽  
Chuan Ge
Keyword(s):  
Feedback Control ◽  
Power Amplifier ◽  
High Voltage ◽  
Operational Amplifier ◽  
High Performance ◽  
Low Cost ◽  
Low Noise ◽  
Noise Power ◽  
Novel Structure ◽  
Voltage Feedback

In this paper, based on the principles of general operational amplifiers, a high-voltage operational amplifier is developed. Considering the influences of piezoelectric stack actuators on the circuit, a novel structure using the high-voltage operational amplifier as a noninverting amplifier is proposed. Because of the simple circuit principles and the voltage feedback control structure, the proposed power amplifier has the advantages of low noise and small size, and it can be realized by discrete electric elements easily. In the application of precision positioning, a power amplifier using the proposed circuit principles for driving piezoelectric stack actuators is designed, simulated, and tested. The simulated results show that the proposed power amplifier could conform to the theory of the circuit. The experimental results show that the designed power amplifier conforms to the simulation, the bandwidth of the power amplifier is about 57 kHz, and the ripple of the power amplifier is less than 2 mV. Furthermore, the output of the proposed power amplifier maintains the same type of wave within in a large range of frequency, while the input is the sinusoidal or square wave, and the resolution of the mechanism which the power amplifier is applied in is about 4.5 nm. By selecting the critical electronic elements and using feedback control, the proposed circuit structure is able to realize a low-cost and high-performance power amplifier to drive piezoelectric stack actuators flexibly, which is the novel work of the paper.

A Low Cost Rejuvenation of Old G.E. and Picker X-Ray Generators

1983 ◽  
Vol 27 ◽  
pp. 293-297
Author(s):  
G. Raykhtsaum ◽  
P. Georgopoulos
Keyword(s):  
Solid State ◽  
High Voltage ◽  
High Performance ◽  
Low Cost ◽  
The United States ◽  
Control Device ◽  
State Control ◽  
X Ray ◽  
Tube Current ◽  
Control Devices

General Electric (G.E.) and Picker generators are currently installed in many research laboratories all over the United States. These units are old and do not satisfy the modern requirements for X-ray generators. Instabilities of high voltage and tube current complicate the experiment. To maintain G.E. and Picker generators is becoming more and more expensive due to the high cost of vacuum tubes and replacement parts. To replace old generators with new high performance commercial units can cost even more and requires additional adaptations. In the present paper another alternative is proposed, which assumes the replacement of vacuum tube mA and KV controls with solid state circuits using the old G.E. or Picker high voltage transformers. This alternative allows rejuvenation of old generators without difficulties of reinstallation and does not require adaptations to the existing experimental X-ray equipment. The combination of old high voltage transformers with modern solid state control devices provides high performance at low cost. For this purpose the control device was designed and is described below.

scholarly journals Design and Implementation of Three-Level DC-DC Converter with Golden Section Search Based MPPT for the Photovoltaic Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Chouki Balakishan ◽  
N. Sandeep ◽  
M. V. Aware
Keyword(s):  
High Voltage ◽  
High Performance ◽  
High Efficiency ◽  
Low Cost ◽  
Golden Section ◽  
Boost Converter ◽  
Pv System ◽  
Point Tracking ◽  
Golden Section Search ◽  
Energy Conversion Systems

In many photovoltaic (PV) energy conversion systems, nonisolated DC-DC converters with high voltage gain are desired. The PV exhibits a nonlinear power characteristic which greatly depends on the environmental conditions. Hence in order to draw maximum available power various algorithms are used with PV voltage/current or both as an input for the maximum power point tracking (MPPT) controller. In this paper, golden section search (GSS) based MPPT control and its application with three-level DC-DC boost converter for MPPT are demonstrated. The three-level boost converter provides the high voltage transfer which enables the high power PV system to work with low size inductors with high efficiency. The balancing of the voltage across the two capacitors of the converter and MPPT is achieved using a simple duty cycle based voltage controller. Detailed simulation of three-level DC-DC converter topology with GSS algorithm is carried out in MATLAB/SIMULINK platform. The validation of the proposed system is done by the experiments carried out on hardware prototype of 100 W converter with low cost AT’mega328 controller as a core controller. From the results, the proposed system suits as one of the solutions for PV based generation system and the experimental results show high performance, such as a conversion efficiency of 94%.

A High Performance Current-Mode Instrumentation Amplifier with Level Shifter for Single Power Biomedical Applications

2014 ◽  
Vol 530-531 ◽  
pp. 217-220
Author(s):  
Hwang Cherng Chow ◽  
Bing Shiun Tang
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Current Mode ◽  
Cmos Technology ◽  
Low Noise ◽  
Instrumentation Amplifier ◽  
Level Shifter ◽  
High Cmrr ◽  
Cmos Implementation ◽  
Single Power

In this paper, a high performance current-mode instrumentation amplifier has been proposed with low noise, low power and high CMRR features. The proposed design can adjust the gain with an external resistor for the processing of various biomedical signals. To reduce the noise of the amplifier, two design methods including PMOS input and lateral pnp BJT input have been implemented to improve the prior arts. To meet the single power supply need, a biomedical voltage level shifter is also proposed for low cost CMOS implementation. Based on the post-layout simulation results, the presented current-mode amplifier achieves high CMRR over 120 dB, power consumption of 61 uW at 1.8-V supply using standard 0.18-um CMOS technology.

A microwave switchable low-noise power amplifier for an active backscatter tag

2014 ◽  
Vol 56 (5) ◽  
pp. 1251-1255
Author(s):  
Jeremie Prades ◽  
Anthony Ghiotto ◽  
Thierry Taris ◽  
Nicolas Regimbal ◽  
Jean-Marie Pham ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Low Noise ◽  
Noise Power

A low cost high performance MMIC low noise downconverter for direct broadcast satellite reception

2002 ◽  
Author(s):  
P. Wallace ◽  
R. Michels ◽  
J. Bayruns ◽  
S.B. Christiansen ◽  
N. Scheinberg ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Low Noise ◽  
Direct Broadcast ◽  
Direct Broadcast Satellite

scholarly journals A Low Noise Power Amplifier MMIC to Mitigate Co-Site Interference in 5G Front End Modules

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 124900-124909
Author(s):  
Neha Bajpai ◽  
Ahtisham Pampori ◽  
Paramita Maity ◽  
Manish Shah ◽  
Amitava Das ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Low Noise ◽  
Noise Power ◽  
Front End

scholarly journals Coronene: A High-Voltage Anion De-insertion Cathode for Potassium-Ion Battery

2020 ◽  
Author(s):  
Minami Kato ◽  
Titus Masese ◽  
Kazuki Yoshii
Keyword(s):  
High Voltage ◽  
Aromatic Hydrocarbons ◽  
Cathode Materials ◽  
High Performance ◽  
Storage Systems ◽  
Broad Class ◽  
Low Cost ◽  
Potassium Ion ◽  
Energy Devices ◽  
Polycyclic Aromatic

<b>Potassium-ion batteries have been envisioned to herald the age of low-cost and high-performance energy storage systems. However, the sparsity of viable components has dampened the progress of these energy devices. Thus, herein, we report coronene, a high-voltage cathode material that manifests a high-voltage of 4.1 V enkindled by anion (de)insertion. This work not only illuminates the broad class of polycyclic aromatic hydrocarbons as prospective cathode materials but also sets a new benchmark for the performance of future organic cathode materials.</b>

scholarly journals A 79 dBΩ 1.2 GHz Low-Noise Single-Ended CMOS Transimpedance Amplifier for High-Performance OTDR Applications

2019 ◽  
Vol 15 (2) ◽  
pp. 113-118
Author(s):  
Agata Romanova ◽  
Vaidotas Barzdenas
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Low Noise ◽  
Cmos Process ◽  
Transimpedance Amplifier ◽  
Output Buffer ◽  
Noise Current ◽  
Resistive Feedback ◽  
Optical Time ◽  
And Performance

AbstractThe work reports on the design and performance of a low-noise low-cost CMOS transimpedance amplifier (TIA). The proposed circuit shall be employed in optical time-domain reflectometers and is implemented using an affordable 0.18 µm 1.8 V CMOS process. The approach preserves the benefits of a classical feedback structure while addressing the noise problem of conventional feed-forward and resistive feedback architectures via the usage of noise-efficient capacitive feedback. Circuit-level modifications are proposed to mitigate the voltage headroom and DC current issues. The suggested design achieves a total gain of 82 dBΩ (79 dBΩ after the output buffer) within the bandwidth of 1.2 GHz while operating with a total input capacitance of 0.7 pF. The simulated average input-referred noise current density is below 1.8 pA/sqrt(Hz) with the power consumption of the complete amplifier including the output buffer being 21 mW.

Sign in / Sign up

Export Citation Format

Share Document