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Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
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1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
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1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
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Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
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Button cells (also called button cells) are those batteries with equal or larger diameter and height. The current size range of alkaline button cells is specified as follows: diameter 4.8mm-11.4mm,...[Details]
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0 Introduction
Since its introduction in 1884, the Jacquard device of the Jacquard warp knitting machine has developed from mechanical to electromagnetic and now piezoelectric, namely the Piezo Jacq...[Details]
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introduction
As batteries become more popular as a power source, an equally strong need has emerged to maximize the useful life of the batteries. Cell imbalance, or the mismatch in the sta...[Details]
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The main power supply and backup battery are connected to the load through a simple diode "OR" logic circuit. However, when the battery voltage exceeds the main power supply voltage, the diode "OR"...[Details]
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Abstract: Based on the hardware structure and function of the network-type power quality monitoring device, the process of transplanting the μC/OS-Ⅱ embedded real-time operating system to the LPC24...[Details]
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Study on control method using hysteresis comparison
High-voltage direct current (HVDC) transmission systems generate a large number of harmonics during the rectification and inversion process. ...[Details]
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Mobile Internet Device (MID) is an emerging product that integrates wireless communication and computing functions, aiming to provide higher portability than notebook computers and larger display...[Details]
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1 Overview
PWM front-end controlled rectifier is widely used in three-phase AC-DC-AC voltage system due to its advantages such as DC voltage change, input power factor correction (PFC) an...[Details]
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Cds---drain-source capacitance
Cdu---drain-substrate capacitance
Cgd---gate-source capacitance
Cgs---drain-source capacitance
Ciss---gate short-circuit common source input capacit...[Details]
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As train speeds continue to increase, the requirements for train tracks are also getting higher and higher. The original insulated track circuit can no longer meet the needs of the development of r...[Details]
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Twenty years ago, the advent of easy-to-use integrated switching regulators revolutionized power management technology. Previously, most applications used linear regulators as the supply voltage an...[Details]