Overview of Superposition Principle and Processing of Signal Sources

I. Overview The principle of superposition is an important analysis method for linear circuits. A linear circuit is a circuit in which voltage and current are proportional. Its content is: in a linear circuit containing multiple electromotive forces, the current (or voltage) of any branch is the algebraic sum of the current (or voltage) generated […]

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Resistance Definition and High Frequency Equivalent Model

First, the definition of resistance When current flows through a certain material, the material current has a certain hindering effect, and this hindering effect is the resistance of the material. It is represented by the symbol R. The unit of resistance is ohm [m], which is represented by the symbol Ω. In addition to ohms, […]

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Application scheme design of auxiliary power inverter for photovoltaic system

In the first quarter of this year, Littelfuse’s silicon carbide MOSFET products were successfully bid for a domestic photovoltaic system project, and the product was successfully applied to the three-phase solar inverter auxiliary power circuit. Littelfuse’s design scheme has been recognized by the market again, and a long-term cooperation opportunity has been obtained. As a […]

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What is the cause of power quality problems caused by power quality

Part 1: The Importance of Power to Humanity Electricity! We are both familiar and unfamiliar. Electricity is widely used in our lives, ranging from lamps, televisions, computers, telephones, etc. in our daily life. In modern industry, agriculture and other sectors of the national economy, electricity is the main source of power to support the operation […]

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Rectification of direct current and alternating current

This paper introduces the concepts of direct current and alternating current, the symbols of direct current and alternating current, the rectification method of direct current and alternating current, the current whose magnitude and direction do not change with time, and the rectification and half rectification methods of alternating current. symbols for direct current and alternating […]

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A Novel Mechanism of 4e-/O2 Oxygen Reduction Reaction in Molten Salt Li-O2 Batteries

01 Research Background Lithium-oxygen batteries (Li-O2) can provide higher energy than traditional lithium-ion batteries through the reaction of metallic lithium with oxygen, which will improve important conditions for the realization of heavy-duty vehicles and aviation electrification. However, considering that in organic electrolytes, oxygen reduction products such as Li2O2 and Li2O do not dissolve to a […]

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Air Self-Charging Pb/PTO Batteries Based on Proton Chemistry

Research Speed ​​Reading Air self-charging aqueous metal-ion batteries typically suffer from capacity loss after self-charging cycles due to the formation of alkaline salts on the cathode in near-neutral electrolytes. Recently, the team of Niu Zhiqiang of Nankai University developed an air self-charging Pb/PTO battery based on proton chemistry in an acidic electrolyte. The fast kinetics […]

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