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Precision rectifier

About: Precision rectifier is a research topic. Over the lifetime, 4952 publications have been published within this topic receiving 63668 citations. The topic is also known as: super diode.


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Patent
11 Aug 1986
TL;DR: An integrated circuit two transistor full wave rectifier suitable for fabrication in a CMOS, NMOS or PMOS process and characterized by a high level of integration based upon shared utilization of doped regions is presented in this article.
Abstract: An integrated circuit two transistor full wave rectifier suitable for fabrication in a CMOS, NMOS or PMOS process and characterized by a high level of integration based upon shared utilization of doped regions. In one form, the full wave rectifier is configured from two diode connected field effect transistors and two parasitic p-n junctions, all formed in a substrate region of common impurity type.

22 citations

Patent
13 May 1970
TL;DR: In this paper, a switching system for the stabilization of welding arcs and for the ignition of alternating-current or direct-current welding arcs in which the ignition or stabilization current pulse between electrode and workpiece or between two electrodes is transmitted through a capacitor and at least one semiconductive controlled rectifier (SCR or thyristor) is provided in the discharging circuit of the capacitor.
Abstract: A switching system for the stabilization of alternating-current welding arcs and for the ignition of alternating-current or direct-current welding arcs in which the ignition or stabilization current pulse between electrode and workpiece or between two electrodes is transmitted through a capacitor and at least one semiconductive controlled rectifier (SCR or thyristor) is provided in the discharging circuit of the capacitor. The gate of the controlled rectifier is triggered by a control circuit synchronized with the current source and including a voltage-responsive switching element in circuit with a control capacitor. The voltage-responsive switching element is a DIAC-type trigger diode whose output is connected directly i.e., via only ohmic impedance) with the control electrode or gate of the controlled rectifier.

22 citations

Proceedings ArticleDOI
13 May 2013
TL;DR: In this paper, a voltage-source active rectifier and its workings are described. But the main part of the paper is devoted to results from simulations and measurements in the laboratory.
Abstract: Share of current harmonics, which is taken from the power net, increases with the use of diode and thyristor rectifiers (so-called characteristic harmonics of current). One of the ways to minimize these harmonics is to use the active rectifier. The principle of operation of active rectifier is based on correct switching of transistors, which allows the two basic functions: a) to keep the first harmonic of current in phase with the first harmonic of voltage, power factor is approximately one, b) to achieve almost sinusoidal current, which is taken from the grid. Characteristic harmonics in the spectrum of the current, which is drawn from the grid by active rectifier, are negligible. There appear new harmonics in the spectrum of the current; these new harmonics are produced by switching frequency of transistors. These harmonics are little dependent on load. That can cause the fact that the proportional value of the examined harmonics is high, although the absolute value is actually low. This paper briefly describes the voltage-source active rectifier and its workings. The main part is devoted to results from simulations and measurements in the laboratory.

22 citations

Journal ArticleDOI
TL;DR: A local analysis calculating the required RF source power, based on the rectifier ac-dc conversion gain and the two-port analysis of the coupled coils, and bifurcation analysis based on large-signal capacitor modeling and conversion matrix analysis are provided, substantiating the results.
Abstract: This work reveals and analyzes an unfamiliar bifurcation in weakly-coupled inductive wireless power transfer systems (IWPT) employing diode rectifier. This paper firstly provides a local analysis calculating the required RF source power, based on the rectifier ac-dc conversion gain and the two-port analysis of the coupled coils. The local analysis is supported by measured results on silicon. Successively, we demonstrate that if the secondary coil and the diode rectifier have a high quality factor, the rectifier diode varactor can create a turning-point bifurcation in the solution curve of the output dc voltage versus the RF source power. With the bifurcation, the local analysis becomes invalid and a higher source power is required. Bifurcation analysis based on large-signal capacitor modeling and conversion matrix analysis are provided, substantiating the results. The introduced bifurcation analysis is verified by three IWPT examples on PCB. A proposed design with an auxiliary nonlinear varactor is proposed to mitigate the bifurcation with improved performance.

22 citations

Proceedings Article
Xuan-Dien Do1, Young-Hun Ko1, Huy-Hieu Nguyen1, Huy-Binh Le1, Sang-Gug Lee1 
07 Apr 2011
TL;DR: The proposed control scheme circuit helps parallel SSHI rectifier can significantly increase the amount of power extracted from PE material and has a power conversion efficiency of more than 92% and can extract four times more energy than a active full-bridge rectifier.
Abstract: Today green energy plays an important role in human life; thus, many methods have been used to harvest green energy from the surrounding environment for the service of humankind. One of the most popular methods involves the use of a piezoelectric (PE) material to harvest energy from vibration sources. A PE energy scavenging system has two functional sections: a transducer, which converts potential energy into electrical energy; and an electrical interface, which is used to manage this electrical energy. One of the most important parts of the electrical interface is a rectifier, such as an AC-DC converter. This paper proposes a new control scheme for an efficient parallel rectifier based on a synchronized switch harvesting on inductor (SSHI) process; the inductor is parallel with an active full-bridge rectifier. The proposed control scheme circuit helps parallel SSHI rectifier can significantly increase the amount of power extracted from PE material. The parallel inductor enables the voltage across the internal capacitor of the PE material to be flipped instead of uselessly discharged every half cycle. Furthermore, an active full-bridge rectifier is used instead of a passive rectifier to reduce the threshold voltage of the passive diode. The simulation results show that the proposed rectifier has a power conversion efficiency of more than 92% and can extract four times more energy than a active full-bridge rectifier.

22 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202345
202299
20217
202017
201910
201833