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In the past six months, the rapid development of the global smartphone market has been obvious to all, and in the second half of 2013 which has just begun, the market size may continue to expand.
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HV9963 is a current mode controlled LED driver that can be used to control PWM converters (buck, boost, boost-buck or SEPIC). The PWM dimming ratio is greater than 5000:1. It has an internal 40V linea...[Details]
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How to suppress 50 Hz AC noise in tube amplifier
1. Influence of Filament Voltage Amplifier
As shown in Figure D--1, there is a capacitor Cf between the grid and the filament of the electron ...[Details]
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Thickness gauge is an instrument used to measure the thickness of materials and objects. In industrial production, it is often used to continuously or sample the thickness of products (such as steel ...[Details]
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"I hope mobile phone companies can better understand the needs of elderly consumers and produce smartphones that are more suitable for them, so that we can keep up with the pace of the times." ...[Details]
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ESR is equivalent series resistance.
The emergence of
ESR
caused the behavior of capacitors to deviate from the original definition. ESR is equivalent "series" resistance, which mea...[Details]
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On May 15 this year, the U.S. Bureau of Industry and Information Technology further tightened restrictions on Huawei. All companies using U.S. equipment and technology need to obtain a U.S. license b...[Details]
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1. Overview
AY0438 is a complete MCOS display driver produced by Microchip. It can directly drive LCD display modules under the control of a single-chip microcomputer or a microproces...[Details]
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Nested Vectored Interrupt Controller
1. Features
● 68 maskable interrupt channels (excluding 16 interrupt lines of Cortex™-M3);
● 16 programmable priority levels (using 4-bit interrupt ...[Details]
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Many oscilloscopes on the market today have their own control methods, including using the front panel, touch screen, or soft keys. The basic controls found on most oscilloscopes include: Horizonta...[Details]
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Infrastructure as a Service has been a boon to the enterprise, enabling CIOs to move away from physical servers and even shut down data centers while achieving new levels of business agility. However...[Details]
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Use the parallel port P1 of AT89S51 to connect a 4×4 matrix keyboard, and use P3.0-P3.3 As input line, P3.4-P3.7 as output line; the digital button serial number "0-9" is displayed on the digital tub...[Details]
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On March 18, State Grid Ningxia Electric Power Company held a deployment meeting for the preparation of the Ubiquitous Power Internet of Things construction plan to implement the requirements of th...[Details]
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This paper mainly discusses the design of a portable health diagnosis and treatment instrument based on the theory that the cell activities of human muscles, nerves, tissues and organs produce weak...[Details]
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Carbon dioxide is the most ideal benchmark for measuring the air quality in a car. It is more sensitive than other air quality indicators. The carbon dioxide content shows obvious changes in differ...[Details]