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The triboelectric current is generated by the charge generated by friction between the conductor and the insulator. The free electrons leave the conductor due to friction, causing a charge imbalance, ...[Details]
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Usually, a digital multimeter can be used to determine whether a power module is good or bad. As shown in the figure below, connect the red probe of the digital multimeter to U/V/W and the black prob...[Details]
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1 Introduction
When performing PCB reverse design, it is necessary to first detect the circuit board to obtain the connection relationship between all component pins; then use the correspondin...[Details]
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Recently, Apple released a number of new products, including the new generation iPad Pro, AirTag, Apple TV 4K, and iMac. Among them, the 12.9-inch iPad Pro not only uses Apple's self-developed M1 pro...[Details]
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A hundred years ago, Wei Yuan proposed in his book "Hai Guo Tu Zhi" that "learn from the foreigners to develop skills to conquer the foreigners" and called for learning advanced Western technology to...[Details]
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Volvo has announced the price of the 2020 XC40 in the UK - £28,965. The T3 will be equipped with an automatic transmission, while the T4 model will be available in front-wheel drive and four-wheel dr...[Details]
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Features of V-cone flowmeter High accuracy: The accuracy of the V-cone flowmeter is ±0.5% of the measured value, and the commercial measurement level is ±0.3% (the system accuracy needs to refer to ...[Details]
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We often hear hardware engineers around us mention the topic of signal integrity. So what exactly does signal integrity mean? Signal integrity (SI) refers to the signal quality on the signal line...[Details]
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Question 1: Why can't we use white LEDs at overvoltage or overcurrent when designing circuits ? The most commonly used 5mm white LEDs have a normal operating voltage of 3.0-3.5V and a normal operati...[Details]
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Some time ago, Xiaozhi posted a spy photo of the BMW VBX6 on WeChat Moments. This car is said to be the blackest car in the world, absorbing more than 99% of light. Some people wondered whether the l...[Details]
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introduction This system uses the 32-bit TMS320F28027 as the control center of the moving object. TMS320F28027 has rich resources, including 32-bit architecture, advanced peripherals, high analog i...[Details]
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Power bipolar transistors have been widely used as power switch tubes in switching power supplies due to their low cost. The application of electron irradiation technology can reduce the minority c...[Details]
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Smartphones are gradually removing the headphone jack to make the body thinner and lighter, and the wireless Bluetooth headset market is slowly expanding. Generally, we use Bluetooth headsets of the ...[Details]
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The panel of the three-channel DC resistance fast tester is shown in the figure below:
1. Ia Ib Ic: DC current output. When measuring single-phase or two-phase, Ia and Ib are current outpu...[Details]
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The intelligent soft start cabinet is an electrical device used to control the start and stop of the motor. It controls the starting current and voltage of the motor to achieve smooth start and sof...[Details]
Special Edition for Assessment Centres
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