Topic
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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TL;DR: In this paper, a new type of Class E rectifier that can regulate the output voltage or power is proposed, which is composed of a conventional Class E zero-voltage-switching rectifier and the controlled shunt capacitor whose capacitance is variable according to the state of the active switches.
Abstract: A new type of Class E rectifier that can regulate the output voltage or power is proposed. The proposed rectifier is composed of a conventional Class E zero-voltage-switching rectifier and the controlled shunt capacitor whose capacitance is variable according to the state of the active switches. With turning the active switches ON or OFF, the shunt capacitance of the rectifier can be changed, which enables the rectifier to vary the output voltage or power. This paper presents an analysis, experimental results, and simulation results in the steady state.
36 citations
TL;DR: A novel full-wave precision rectifier employing a single current controlled conveyor with three outputs, two complementary MOS transistors, and a resistor with high input impedance, current controlled output, good zero-crossing performance, and linearity is proposed.
Abstract: A novel full-wave precision rectifier employing a single current controlled conveyor (CCCII) with three outputs, two complementary MOS transistors, and a resistor is proposed. The circuit enjoys high input impedance, current controlled output, good zero-crossing performance, and linearity. Another current controlled precision rectifier with no external resistor is also derived from the proposed circuit. RSPICE simulations using real device parameters are included to verify the proposed circuits.
35 citations
Patent•
19 Nov 1998
TL;DR: In this paper, the rectifier effect in a gas discharge lamp (G 1, G 2 ) and an electronic ballast, for the operation of gas discharge lamps, is recognized.
Abstract: Process for the recognition of the rectifier effect appearing in a gas discharge lamp (G 1 , G 2 ) and an electronic ballast, for the operation of gas discharge lamps (G 1 , G 2 ), with which such a process finds employment. The electronic ballast includes a monitoring or control circuit (IC 2 ) which monitors an operating parameter of a load circuit (E) of the electronic ballast, whereby this operating parameter corresponds to the lamp voltage or is dependent thereon. The monitoring circuit (IC 2 ) integrates this monitored operating parameter over a full period and determines upon the presence of a rectifier effect if the integration result deviates from a predetermined integration desired value. Further, for the recognition of the rectifier effect, the duration of the positive and negative half-waves of the monitored parameter can be compared.
35 citations
Patent•
27 Oct 1988
TL;DR: In this paper, a power factor correction circuit for an off-line supply of the switch mode type is described, where the inductor causes the amplitude of the unidirectional current to increase and decrease at a rate which is less than it would be if the inductors were not so connected.
Abstract: A power factor correction circuit for an off line supply of the switch mode type. In its simplest form the circuit is made up of a capacitor and an inductor. The capacitor is to be connected to the input rectifier of the supply. The capacitor is in aiding relationship for each half cycle of the line voltage. When so connected, a unidirectional current flows from the rectifier to charge the bank capacitors of the supply. The inductor is to be connected to at least the rectifier. The inductor causes the amplitude of the unidirectional current to increase and decrease at a rate which is less than it would be if the inductor was not so connected. Embodiments having at least two capacitors which are controlled to be switched in and out of the correction circuit as well as one or more inductors which may or may not be controlled are also disclosed.
35 citations
05 Sep 1994
TL;DR: A new topology of PWM rectifier is presented which can achieve unity-power-factor on the AC supply side and ripple-reduction on the DC output side and it does not need the large DC capacitor or passive L-C resonant circuit.
Abstract: This paper presents a new topology of PWM rectifier which can achieve unity-power-factor on the AC supply side and ripple-reduction on the DC output side. The main circuit of this rectifier is accomplished by adding only a pair of switches to a conventional PWM rectifier. And it does not need the large DC capacitor or passive L-C resonant circuit. These additional switches and PWM rectifier are controlled not only to make a unity power factor but also to reduce the ripple current. The effectiveness of this circuit is confirmed by the experiments and analysis. This rectifier is useful for UPS and DC power supply, especially in case that the batteries are connected to the DC line. >
35 citations