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.

Surge current-limiting circuit

Abstract: There is disclosed a surge current-limiting circuit including a current-limiting means connected in series with a load; a controlled rectifier connected in parallel with the current-limiting means; a photocoupler; and a delay circuit having a time constant, connected through the photocoupler with the gate of the controlled rectifier.

PSPICE and MATLAB for Electronics

Abstract: ORCAD PSPICE Capture Fundamentals Introduction PSPICE Schematics DC Analysis PROBE Transient Analysis AC Analysis PSPICE Fundamentals Introduction DC Analysis Transient Analysis AC Analysis Printing and Plotting Transfer Function Command DC Sensitivity Analysis Temperature Analysis PROBE Statement PSPICE Advanced Features Device Model Library File Component Values (.PARAM, .STEP) Function Definition (.FUNC, .INC) Subcircuit (.SUBCKT, .ENDS) Analog Behavioral Model Monte Carlo Analysis (.MS) Sensitivity and Worst Case Analysis (.WCASE) Fourier Series (.FOUR) MATLAB Fundamentals MATLAB Basic Operations Matrix Operations Array Operations Complex Numbers The Colon Symbol FOR Loops IF Statements Graph Functions Input/Output Commands MATLAB Functions M-Files Mathematical Functions Data Analysis Functions Derivative Function (diff) Integration Function (quad, quad8, trapz) Curve Fitting (polyfit, polyval) Polynomial Functions (roots, poly, polyval, and fzero) Save, Load, and Textread Functions Interfacing SPICE to MATLAB Diode Circuits Diode Rectification Schematic Capture of Diode Circuits Zener Diode Voltage Regulator Peak Detector Diode Limiters Operational Amplifier Inverting and Noninverting Configurations Slew Rate and Full-Power Bandwidth Schematic Capture of Operational Amplifier Circuits Active Filter Circuits Transistor Characteristics and Circuits Characteristics of Bipolar Junction Transistors MOSFET Characteristics Biasing of BJT Circuits MOSFET Bias Circuit Frequency Response of Transistor Amplifiers Schematic Capture of Transistor Circuits Feedback Amplifiers Each chapter contains a Bibliography at the end.

Self-Powered Piezoelectric and Thermoelectric Energy Simultaneous Extraction Interface Circuit Based on Double Stack Resonance

Abstract: A hybrid self-powered synchronous electric charge extraction (HSP-SECE) interface circuit based on double stack resonance is presented in this paper. The proposed HSP-SECE interface circuit can simultaneously extract energy from piezoelectric transducer (PZT) and thermoelectric generator (TEG) when the peak open-circuit voltage of the PZT is detected by passive peak detector. The output power of the proposed interface circuit can reach three times of that of full-bridge rectifier circuit at the maximum power point, and the maximum efficiency of harvesting thermoelectric energy can reach 76% at 200 mV of the open-circuit voltage of the TEG. The simulation and experimental results show the superiority of the HSP-SECE circuit.

Motor speed control circuit with overload protection

Abstract: There is disclosed an improved switching circuit with overload protection for transforming a source of direct current power into a pulsating voltage of constant frequency and variable pulse duration adapted to be connected through a load to a first controllable rectifier of the switching circuit which in turn is connected through a current sensing resistor to a common circuit ground. The gate electrode of the first controllable rectifier is connected to a source of constant frequency pulses of variable duration. The secondary winding of a current transformer is connected from the common circuit ground in series with a diode, the cathode of which is connected to the anode of a second controllable rectifier, the cathode of the second controllable rectifier being connected to the common circuit ground. The gate of the second controllable rectifier is coupled to a source of pulses which are the exact complement to the pulses applied to the gate of the first controllable rectifier. The primary of the transformer is connected from the common circuit ground in series with a charging capacitor, which in turn is connected to the anode of the first controllable rectifier. The anodes of the first and second controllable rectifiers are connected through a "turn-off" capacitor. A first comparator amplifier has an input connected to the junction of the current sensing resistor and the first controllable rectifier and an output connected through an integrating circuit to a second comparator amplifier, the output of which is connected to a power contactor for applying and removing power to the switching circuit.

Synchronous ac rectified flyback converter utilizing boost inductor

Abstract: A flyback converter utilizes a boost inductor coupled between a source of AC power and a synchronous rectifier to provide power factor correction. The synchronous rectifier includes four field-effect transistors configured in a bridge arrangement. Control circuitry controls the on/off states of opposite pairs of the FETs to provide synchronous rectification of the AC power. A primary winding of the flyback transformer is coupled in series with a storage capacitor across the output of the synchronous rectifier. A circuit, which includes a switching transistor, is also coupled across the output of the synchronous rectifier to provide a low resistance path when the switch is closed. The cores of the boost inductor and the transformer are loaded with energy when the switch is closed. When the switch opens, the energy stored in the magnetic cores is transferred to the output via the transformer secondary winding and rectification circuitry. In one embodiment, a separate switching transistor is not used and its function is performed by the rectifier FETs.