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The solid-state strong light explosion-proof lamp uses a cold light source, has low heat generation, small working current, and is explosion-proof. It is widely used in flammable and explosive work...[Details]
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High luminous efficiency
After decades of technological improvements, the luminous efficiency of LED has been greatly improved. Incandescent lamps and halogen lamps have a luminous efficienc...[Details]
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1. Current measurement method Select the range: The DC current range of the multimeter is marked with "ma" and has three ranges: 1ma, 1oma, and 100ma. The range should be selected based on the curren...[Details]
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The switching power supply uses a circuit to control the switch tube to turn it on and off at high speed. Convert direct current into high-frequency alternating current and provide it to the tran...[Details]
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Overview
The CDMA wireless system was designed to operate in the same radio frequency band as the older Advanced Mobile Phone System (AMPS), which operated in the U.S. cellular band before the intr...[Details]
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According to foreign media reports, Tokyo Metropolitan University (changed to Tokyo Metropolitan University in April) has developed a new method to create ceramic flexible electrolyte sheets for lith...[Details]
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Recently, Chengdu Jinghua Optoelectronics Technology Co., Ltd. (company name: Jinghua Optoelectronics) plans to issue shares for the first time and list on the Growth Enterprise Market. It has comple...[Details]
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When it comes to new energy vehicles, generally speaking, the most valuable part is the power battery, because the cost of the power battery accounts for about 40% of the new energy vehicle. This is ...[Details]
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1. Pull-up input: Pull-up means pulling the potential up, such as pulling it to Vcc. Pull-up means embedding an uncertain signal at a high level through a resistor! The resistor also acts as a curren...[Details]
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STM32F4 has four built-in universal asynchronous/synchronous transceivers (USART1, USART2, USART3, USART6) and two universal asynchronous transceivers (UART4 and UART5). This article explains how...[Details]
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On October 14, Guanghong Technology stated on the investor interaction platform that with the introduction of customers such as Xiaomi and Honor and the increase in orders, the company's capacity uti...[Details]
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On May 21, Dongguan City, Guangdong Province held a strategic emerging industry investment conference. A signing ceremony for strategic emerging industry projects was also held at the conference. The...[Details]
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According to foreign media reports, according to two people familiar with the matter, Samsung Electronics' semiconductor manufacturing department has won Qualcomm's latest contract and will use its m...[Details]
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;Key points: Application of counters
; Set the timer to 50ms, and set two software counters to 20 and 60 for the total time
; 50ms*20*60=60000ms=1 minute
...[Details]
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Detailed page: http://alanzjl.sinaapp.com/2015/02/gpio_brr_bsrr_odr/ BRR, BSRR, and ODR are all used to control 16-bit pins. Among them, the upper 16 bits of BRR and ODR are unavailable (reserved),...[Details]
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