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1 Overview
近年来，LED照明技术快速发展，在LED的光效、色温、显色性等光色指标备受关注的同时，LED的热学特性和寿命也越来越受到人们的重视，特别是热学特性，对LED光色电的性能和寿命有着显著的影响。然而，对热学特性和寿命的检测具有挑战性。
The thermal characteristics of LED mainly includ...[Details]
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1 Introduction
Information acquisition mainly includes the acquisition, storage, processing and control of signals and data. It first collects and records the physical analog quantities of the...[Details]
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When SM2..0 is 000, the SLEEP instruction will put the MCU into idle mode. In this mode, the CPU stops running, while SPI, USART, analog comparator, ADC, two-wire interface, timer/counter, watchdog a...[Details]
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The simulation schematic is as follows Basic functions of timer alarm 1. Basic functions of the timer alarm: Use a 3-digit seven-segment display to show the timer and remaining time (in sec...[Details]
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Compared with wired remote control, wireless remote control is not affected by distance, completely eliminating the hidden trouble caused by the towing cable remote control device, and bringing m...[Details]
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51 MCU button control buzzer start and stop program #include reg52.h #define uint unsigned int //macro definition sbit SPK=P3^5; //define speaker port sbit key=P3^1; //The corresponding key on the de...[Details]
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You can make a set/reset flip-flop with two NAND or NOR gates, or you can use an off-the-shelf set/reset trigger IC, such as the 74HC279 quad set/reset latch. The downside to these method...[Details]
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The option for circuit designers to turn power lines on and off in electronic systems may sound like a small thing, but there are many aspects to consider for successful implementation. In some el...[Details]
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Interrupt Classification The STM32 EXTI controller supports 19...[Details]
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question:
Is there an easy way to protect Ethernet from lightning damage?
Answer:
With a solid understanding of magnetics and circuit theory, co...[Details]
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According to Jiwei.com news, on April 23, the Shenzhen Statistics Bureau released the Statistical Communiqué on Shenzhen's National Economic and Social Development in 2020, stating that according to ...[Details]
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On May 25, 2021, with the strong support of the Guangling District Government of Yangzhou, and after a series of joint cooperation between the Yangzhou Innovation Center and the Cambridgeshire Inno...[Details]
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According to Business Insider, Morgan Stanley analyst Adam Jonas has always been optimistic about Tesla's development, but on Monday, US time, he lowered Tesla's target price from $260 to $240 and ma...[Details]
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1. The principle of matrix buttons
Matrix keyboards are generally composed of 4*4 keys, of course, there are other key combinations. Here we analyze the 4*4 keys, and the principles of other combinat...[Details]
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CAN bus (Controller Area Network) is a communication protocol used in automobile and industrial control systems. It has high reliability, real-time and flexibility, so it has been widely used in ma...[Details]
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