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The VLF receiver is designed to hear radio noise and signals naturally below 20kHz. L1 is a large loop antenna which is a 3 diameter coil of 250 to 300 turns of 26 gauge wire. L1 should be mounted aw...[Details]
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The electronic energy meter is developed on the basis of the digital power meter. It uses a multiplier to measure the electric power. Its working principle block diagram is shown in Figure 3-14. The ...[Details]
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The selection of pressure gauges should be based on specific conditions and the technical requirements of the technical process. At the same time, cost issues should also be considered. We suggest th...[Details]
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Today, when building new applications, many companies think "cloud first ." But as technology evolves, a better approach is to think "cloud native" applications. Cloud-native applications take adva...[Details]
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I've been learning RT-Thread recently, and I found that compiling and burning it into the development board each time is a waste of time, because it always becomes single-step mode once it is simulat...[Details]
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The reference standard for PHS testing is ARIB RCR STD-28 "Personal Handyphone System".
Some of the main RF indicators of PHS, the main transmitter test items include frequency, modulatio...[Details]
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1. Hitachi develops lithium-ion batteries for plug-in hybrid vehicles. In January 2010, Hitachi and Hitachi Automotive Energy developed new lithium-ion batteries for plug-in hybrid vehicles. The ne...[Details]
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2.6 Envelope Detector Typically, spectrum analyzers use an envelope detector to convert an IF signal into a video signal. The simplest envelope detector consists of a diode, a load resistor, and a lo...[Details]
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Main Application: The Medical Protective Meltblown Filter Material Gas Exchange Pressure Difference Tester is suitable for the determination of the gas exchange pressure difference of medical surgica...[Details]
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OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
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Inspired by the nimble movement of snakes, the serpentine shape is widely used to explore earthquake zones, conduct inspections in the oil and gas industry, firefighting operations, and search and ...[Details]
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Introduction:
Development Board Shenzhou King STM32F207 Development Board
Problem Description:
When using emwin, due to the large number of variables occupied, the embarrassing situation of insuff...[Details]
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【Introduction: At a time when pure electric and plug-in hybrid vehicles are booming around the world, fuel cell passenger cars are relatively unpopular. However, with the alliance between Toyota an...[Details]
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The system clock selection is performed at startup. At reset, the internal 8MHz RC oscillator is selected as the default CPU clock.
Select an external 4~16MHz clock with failure monitoring; when the ...[Details]
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A single-phase inverter is a power electronic device that converts single-phase AC power into three-phase AC power with adjustable frequency and amplitude. It is widely used in industrial automatio...[Details]
DIY/Open Source Hardware
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