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In real life, many people forget to bring something when they go out, such as keys, wallets, etc. Nowadays, mobile payment is so convenient that it is normal to forget to bring wallets, but keys must...[Details]
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3. Serial port interrupt service thread After the serial port interrupt is generated, the specific data processing will be completed in the interrupt service thread. Take the camera interrupt thread ...[Details]
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Samsung Electronics maintained its leading position in the European smartphone market in 2021, but it faced more intense competition from Apple in the United States and Xiaomi in China, losing its le...[Details]
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文介紹一種省電和具成本效益的LED亮度控制方法，提供每個LED一個脈衝寬度調變(PWM)控制器，再利用該控制器把輸入電壓轉換為LED電流，是控制多個LED輸出亮度的傳統做法。這類應用多半採用電壓控制型PWM控制器，並為LED串聯一個電流感測電阻，以回授電壓給控制器。這類控制器基本上是在電壓模式操作，會把電流感測電阻的電壓維持在定值，進而使電流穩定不變。
常見的應用是利用多個不同顏色...[Details]
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According to foreign media reports, the latest report from market research company iSuppli stated that due to the popularity of Apple's iPhone, touch screen technology has become a hot topic in the...[Details]
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With the development of industry, the use of metals is becoming more and more extensive, but the resulting metal corrosion problem cannot be ignored. A series of accidents caused by metal corrosion, s...[Details]
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On June 6, Huafeng Testing & Control issued an announcement on the death of Mr. Sun Xian, the company's founder, one of the actual controllers, and chairman. It was disclosed that Mr. Sun Xian, the ...[Details]
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Process industry users do not usually require high-precision level measurement. They only need early warnings when the level reaches a critical level and alarms when the liquid overflows the contain...[Details]
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Thermistors are generally used as sensors to measure temperature. The measurement methods include R-V conversion voltage measurement method and R-F conversion frequency measurement method. The circuit...[Details]
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The method of connecting a single-phase inverter outputting three-phase 220V to a three-phase motor is as follows:
Determine the input power and output voltage of the inverter
First...[Details]
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For electric motors with any number of poles, relatively high speed and large torque are ideal results for dragging loads. How to determine and balance the relationship between the two is a key fac...[Details]
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From HP to Agilent to Keysight Technologies, it has been fifty or sixty years. With this accumulation of time, you can be confident in Keysight's measuring instruments. This is a professional manufac...[Details]
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0Introduction
In the monitoring and control and data acquisition system (SCADA) system, the real-time and accuracy of the collected data have a great impact on the system. A suitable communicat...[Details]
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introduction In a car, since the ambient temperature faced by the car is in a very wide range, the thermal management of the car is a big issue. The starting point of automotive thermal management ...[Details]
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When developing devices that require long-term battery operation, it is necessary to measure the current consumption in various modes (e.g., operating/standby/communication, etc.). The high-sensiti...[Details]
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