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An oscilloscope is an electronic measuring instrument with a wide range of uses. It can transform invisible electrical signals into visible graphs, making it easier for people to study th...[Details]
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The edge-lit type places LEDs on the upper and lower sides of the backlight. The layout adjustment greatly reduces the use of LEDs, thereby reducing production costs and energy consumption, which ...[Details]
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On September 20, Chongqing held a concentrated start-up and commissioning event for major projects in the third quarter of 2023. Tongliang District, as one of the sub-venues, had 8 completed projects ...[Details]
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Input ESPKLED, the LED lights up, input ESPGLED, the light goes out The microcontroller source program is as follows: /************************************************** * * Platform: keil5 + STC15...[Details]
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In industrial control, electrical equipment usually uses three-phase
power supply
as the working power supply. However, the working power supply is often disturbed by various factors, resul...[Details]
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UPS is a third-generation power frequency pure online intelligent UPS developed with brand-new digital technology to meet the power supply reliability requirements of China's power grid environme...[Details]
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1 Introduction
Frequency, period and phase are the three major elements of AC signals. In general, the analysis of AC signals requires the study of their frequency and phase, while the period c...[Details]
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Introduction At present, China's street lamp system mainly relies on manual management, and staff are required to switch the lights on and off at regular intervals; and when street lamps fail, they c...[Details]
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1. Differentiate whether a circuit or device is charged or not. The AC voltage block of the digital multimeter is very sensitive, and it can show even a small induced voltage nearby. Based on this f...[Details]
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Currently, most electric vehicles and energy storage systems use lithium-ion batteries . Although they have high energy density and fast charging speed, they have safety issues. Therefore, the indust...[Details]
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1. Brief Introduction STC89C5X contains 3 timers: Timer 0, Timer 1, Timer 2. The 51 series MCU must have two basic timers (Timer 0 and Timer 1), but not all have three interrupts. Usually we use th...[Details]
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1. Introduction
Siemens' fully integrated control system has great flexibility in the application of intrinsic safety explosion-proof in hazardous areas. There are a large number of safety exp...[Details]
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With the development of the industrial Internet, the sub-sectors based on Internet applications have developed rapidly. Whether in production automation or other aspects, China's industrial field has...[Details]
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On May 13, Hunan Changsha High-tech Zone issued "Several Policies on Promoting the Development of Power Semiconductors and Integrated Circuits in Changsha High-tech Zone", which will use a total of 5...[Details]
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Fault phenomenon:
The backlight of the multi-function LCD display of a computer-controlled rice cooker is not on.
Analysis and repair:
The backlight of the multi-function LCD displ...[Details]
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