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The weather has been hot recently and I have nothing to do, so I DIYed a small refrigerator at home. I tried it and the cooling effect is pretty good. Here I will share the production steps and techn...[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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After the new energy subsidy policy was greatly reduced at the beginning of 2019, many industry insiders were pessimistic about the market performance of new energy vehicle companies in the next few ...[Details]
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Use 20m bandwidth as the limit standard, set the voltage to pk-pk (there is also a function to measure effective values), remove the clip and ground wire on the oscilloscope control head (because the...[Details]
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/****************************************************************
* Watchdog timer register definition
************************************************************/
#define WDTCTL_ 0x0120
sfrw...[Details]
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Mouser stocks STMicroelectronics’ new LSM6DSV16BX motion+bone conduction sensor delivering superior performance for hearables, headphones and more April 19, 2023 – Mouser Electronics, an industr...[Details]
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This lead-acid battery maintenance circuit uses PIC16F676 single-chip microcomputer as the main controller, and the circuit is shown in the figure below. Through this device, the battery is charged...[Details]
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Marc Andreessen, a well-known American venture capitalist and co-founder of Silicon Valley's top venture capital firm a16z, recently wrote that allowing artificial intelligence to develop unfettere...[Details]
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Two flexible 2.4 GHz radio applications: Würth Elektronik has released the Bluetooth Low Energy (BLE) 5.1 module Proteus-III and a proprietary version Thyone-I. The module measures only 8×12×2mm and ...[Details]
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The 35th meeting of the International Mobile Communications Working Group (WP 5D) of the Radio Communications Sector (ITU-R) of the International Telecommunication Union (ITU) was concluded. The meet...[Details]
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Myth 1:
LED
is
a cold light source
, without heat.
Myth 2: LED life is 100,000 hours.
Myth 3: 150W
LED street light
can replace 400W high pressure sodium lamp.
...[Details]
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WVTR-W3 water vapor transmission rate testing system adopts the weighing method testing principle. It is a professional, efficient and intelligent WVTR testing system. It is suitable for water vapor ...[Details]
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The digital message stream in digital communication always uses several code elements to form a "word", and several "words" to form a "sentence". Therefore, when receiving these digital streams, it...[Details]
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As early as the spring of 2014, BYD released the "542" strategy, with acceleration within 5 seconds, electric 4WD, and fuel consumption less than 2 liters per 100 kilometers. During the same period, ...[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]