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In December 2019, the Zhengzhou-Wanzhou High-speed Railway was opened, and Zhengzhou South High-speed Railway Station was also under construction. Near it, there is a building that looks like a "gr...[Details]
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The principle and working process of electric power steering system (eps) are analyzed in detail, pic18f458 microcontroller is used as the controller, and the power motor is controlled through its en...[Details]
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Among the numerous CNC and digital display intelligent devices, a large part of them work day and night for many years (such as the intelligent street lamp clock controller of the power depart...[Details]
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HY12864 is a 128×64 dot matrix LCD module that uses two HD61202s as column drivers and one HD61203 as a row driver. The chip structure is shown in the figure. HY12864 has a simple but powerful inst...[Details]
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Affected by the global epidemic, mainland China adopted the most stringent lockdown strategy in February. Subsequently, the overseas epidemic began to explode in March, and the global smartphone indu...[Details]
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According to China News Network, at the "China Space Science and Technology Activities Blue Book (2021)" press conference held in February, the official introduced that the Shenzhou 13 manned s...[Details]
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1. The detection surface is not parallel to the bottom surface. The sound wave is scattered when it encounters the bottom surface, and the probe cannot receive the bottom wave signal.
2. Castings and...[Details]
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O Introduction
Laser diffraction grating is a key part of laser read/write heads in computer optical drives and consumer electronics. At present, instruments specifically used to measure l...[Details]
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1. When plugging and unplugging the power frequently, the PIC microcontroller is prone to crash. Use a 10K resistor and connect the 5V output of the LM7805 to the ground. 2. The capacitance of the ...[Details]
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Optocoupler isolation circuit with PNP transistor current amplification
As shown in the circuit of TMP03, the transistor is added mainly to provide sufficient current to the LED. ...[Details]
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From June 25 to 26, the 5th Jiwei Semiconductor Summit was held in Haicang, Xiamen. The theme of this summit was "The Heart and the Core are in the Same Place, Changes are Like Kunpeng", which brough...[Details]
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The withstand voltage tester is also called the electrical insulation strength tester or the dielectric strength tester. In today's world where consumer awareness is rising, every manufacturer of elec...[Details]
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X-rays of the MagSafe charger provided by Creative Electron show that the internal charging coil is surrounded by a ring of magnets inside a small ball. iFixit opened the Magsafe at the juncti...[Details]
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AWE, the China Home Appliances and Consumer Electronics Expo, was finally successfully concluded by AWE Lithium Battery.
I just read the messages from two fans of the official account. One ask...[Details]
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Electric vehicles (EVs) and hybrid electric vehicles (HEVs) are rapidly taking over the automotive market, and with these new vehicles comes an increased need for onboard and off-board charging sys...[Details]
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