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introduction Indoor Positioning System (IPS) is an important part of ubiquitous computing. With the popularization of smart terminals and the advent of the mobile Internet era, the demand for posit...[Details]
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With the rapid development of science and technology, especially the widespread application of digital technology and various ultra-large-scale integrated circuits, electronic equipment, especially...[Details]
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ARM7 BEEP Program Analysis
In the schematic diagram, we can see that the buzzer is connected to the P07 port, and the interface is short-circuited.
#include "config.h"
#define BEEP 1 7 // P0....[Details]
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introduction The car MP3 wireless transmitter can send the music stored in the MP3 player through FM broadcast, then receive it through the FM radio and play it through the car stereo. This article u...[Details]
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1. AC LED
The driving voltage of a single-crystal LED light-emitting chip is within 4V. No matter how high the driving voltage is, it can be connected in series to obtain a suitable driving vo...[Details]
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0 Introduction
With the development of science and technology and the improvement of industrial production level, electric heating furnaces have been widely use...[Details]
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In late December, Tesla completed a patent application for a new battery chemistry that could make for better, longer-lasting, and cheaper batteries. Earlier in 2019, Tesla's battery re...[Details]
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700V power management switch reduces quiescent power consumption by 50%.
September 15, 2014, Beijing News --- Recently, Texas Instruments (TI) announced the launch of a 700V switcher tha...[Details]
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Method of measuring DC working voltage with multimeter This is a method of using the DC voltage block of a multimeter to measure the DC supply voltage and the operating voltage of peripheral componen...[Details]
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For some programs that require high time accuracy, it is difficult to write delays in C, so an assembly program is needed. Through testing, I have summarized 51's precise delay functions (embedded as...[Details]
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Rogowski coil is a hollow ring-shaped coil that can be directly placed on the conductor being measured. The AC current flowing through the conductor will generate an alternating magnetic field around...[Details]
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Infineon Technologies Launches 650 V CoolSiCTM MOSFET in D2PAK Package to Further Reduce Application Losses and Improve Reliability
Driven by megatrends such as digitalization, urba...[Details]
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The basic principle of the automobile shock absorber spring fault diagnosis instrument is based on nonlinear spectrum analysis technology. The basic idea of this technology is: according to the i...[Details]
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On December 11, Tianyancha showed that Xiaomi Technology Co., Ltd. added multiple "leijun" trademark information, involving international classifications including metal materials, transportati...[Details]
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The first step of an invasive attack is to remove the chip package. There are two ways to achieve this: The first is to completely dissolve the chip package and expose the metal connections. The se...[Details]
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