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.

Startup Procedure for DSP-Controlled Three-Phase Six-Switch Boost PFC Rectifier

Abstract: In three-phase applications, the six-switch boost power factor correction rectifier is the most widely employed topology because of its good performance and cost effectiveness. A vast amount of literature that deals with this circuit is exclusively focused on various control schemes aimed at optimizing different aspects of its steady-state and/or transient performance. However, almost no literature is available on its startup procedure, which is an indispensable part of control design of any practical circuit. To fill this gap, in this paper, a detailed startup procedure is described. This three-step startup procedure ensures that the inrush currents stay below a specified level and that the output voltage increases monotonically to its reference value, i.e., it does not exhibit any overshoot. The proposed startup procedure is illustrated with MATLAB/Simulink simulation waveforms and also experimentally verified.

Three-phase rectifier with almost sinusoidal input current

Abstract: A three-phase LC bridge rectifier configuration is presented. For a low current variation load, the circuit can be designed to assure a high power factor, and an almost sinusoidal input current.

DC power supply

Abstract: In a DC power supply including a transformer, for making a semiconductor switch operate with a high frequency, an auxiliary circuit that reduces switching loss and a countermeasure circuit for a surge voltage generated in a rectifier diode are provided. In a DC power supply in which a DC power source 101 and a transformer T are connected via a power conversion circuit and a secondary winding of the transformer T is connected to a load RL via a rectifier diode bridge and a filter circuit to supply power to the load RL, a resonance reactor Lz is provided on an output side of the transformer T, a resonant switch circuit 103 including a parallel circuit of a diode Dz and a semiconductor switch Qz and a resonant capacitor Cz is connected in parallel to the rectifier diode bridge and a snubber circuit including a snubber capacitor Cs, a snubber diode Ds1 and a diode Ds2 for discharge is connected to a serial resonant circuit including the resonance reactor Lz and the resonant capacitor Cz in the resonant switch circuit 103 to absorb a surge voltage.

Current Mode Full-Wave Rectifier Based on a Single MZC-CDTA

Abstract: This paper presents a current mode full-wave rectifier based on single modified Z copy current difference transconductance amplifier (MZC-CDTA) and two switches. The circuit is simple and is suitable for IC implementation. The functionality of the circuit is verified with SPICE simulation using 0.35 μm TSMC CMOS technology parameters.

High performance automatic gain control circuit using a S/H peak-detector for ASK receiver

Abstract: A high performance automatic gain control (AGC) circuit is proposed in this paper. The proposed AGC incorporates a modified sample and hold peak-detector. Circuit operation of this new peak-detector demonstrates superior performance to the conventional one, by keeping and tracking the peak of the input signal at the same time. In addition, the design complexity of the proposed AGC is reduced in both the low pass filter and the demodulator due to the modified peak-detector. Based on simulation results, the complete AGC loop shows very satisfactory circuit operation. Therefore, it is suitable for high performance communication applications such as ASK (amplitude shift keyed) receivers.