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The variable frequency and pressure-stabilized water supply equipment control system adjusts the output frequency through the measured network pressure after calculation by the built-in PID regulat...[Details]
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1. Experimental tasks As shown in Figure 4.14.2, use the parallel port P1 of AT89S51 to connect to a 4×4 matrix keyboard, use P1.0-P1.3 as the input line, and use P1.4-P1.7 as the output line; it is ...[Details]
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This article describes the construction of transformerless inverters used in today’s commercial and utility PV installations. It examines
how
power
integrators and utilities
can
unlo...[Details]
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Jiwei.com reported on February 4 that last night, ZTE executive Lu Qianhao published an article praising the first generation of OPPO Find X. He said that the first generation of OPPO Find X can be s...[Details]
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Before introducing the principle of infrared beam alarm, let's first introduce the concept of infrared beam alarm. The full name of infrared beam detector is "beam interruption sensor" (Photoelect...[Details]
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The dimming circuit of traditional incandescent bulbs mostly uses a simple bidirectional AC trigger triode (Triac) phase control method. Incandescent bulbs use high-temperature tungsten filaments t...[Details]
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Author: Asem Elshimi is an RFIC design engineer for IoT wireless solutions at Silicon Labs How can Bluetooth direction finding be used for contact tracing? First, the technology requires additional...[Details]
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The microcontroller source program is as follows: #include "reg51.h" #include "intrins.h" #define GPIO_DIG P2 //Data port #define uchar unsigned char //Rename keyword #define uint unsigned int ...[Details]
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From June 4th to 6th, the much-anticipated China International Information and Communications Exhibition (hereinafter referred to as the "PT Exhibition") opened as scheduled at the National Conventio...[Details]
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A transistor is a solid semiconductor device that can be used for detection, rectification, amplification, switching, voltage regulation, signal modulation and many other functions. As a variable s...[Details]
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Contents The utility model relates to an electromagnetic flowmeter monitoring system, belonging to the field of detection equipment. Background of the Invention In the prior art, the electromagneti...[Details]
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Connections: power supply V CC , ground GND; enable terminal is valid, M=1 for subtraction counting; connect the output terminal to control the preset number control terminal (LD) as shown in Figure ...[Details]
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Some European consumers who have pre-ordered Tesla Model Y reportedly said the company may be able to deliver the new car in Europe earlier than expected. A whistleblower said that he had a c...[Details]
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Recently, Chengdu Tianfutong held an open day event. Xiaoyi, the product experience officer of Tianfutong, released the latest feedback. The key points are as follows: Huawei HUAWEI Pay Tianf...[Details]
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Guangzhou, October 18, 2024 /PRNewswire/ -- On October 17, at the new product and service launch event of the 136th China Import and Export Fair (also known as the "Canton Fair"), SGS, an internati...[Details]