Checking the manual of HuaDa MCU, the GPIO pins should be in the mode of "input, output registers are uncertain" after power-on or hardware reset.The following two registers in the manual clearly stat...
GSM/WCDMA/TDSCDMA/LTE/5G NR frame structure,LTE：36_211_TDD_DL_FrameStructure.png5G: NR_Numerology_FrameStructure_u_0__NormalCP_38_211_01.png
The meaning and physical relationship of access channels, b...
I have three waveform inputs here, triangle wave, sine wave, and rectangular wave, and an external control voltage 0-10V
What kind of circuit or IC can select these three waveforms and output them sep...
On December 30, 2021, Kaiyuan Communication Technology (Xiamen) Co., Ltd. (hereinafter referred to as "Kaiyuan Communication" or "the Company"), a leading supplier of filters and RF module chips in...[Details]
1. When the on-duty personnel use a clamp ammeter to perform measurements on the high-voltage circuit, two people should be involved. When the off-duty personnel perform the measurements, the second ...[Details]
//Button plus or minus one
#include reg51.h
#include stdio.h
int duan ={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F}; //Hexadecimal of the common cathode digital tube 0 to 9
...[Details]
Variable valve timing technology has almost become a standard configuration for today's engines. In order to further tap the potential of traditional internal combustion engines, engineers have d...[Details]
The DC system is mainly composed of two parts. One part is the battery screen and the other part is the DC charging screen (DC screen). The battery screen is a cabinet (800×600×2260) that can hold m...[Details]
The tuning fork liquid level switch is mainly used to realize the upper and lower limit alarm and control of the liquid level. It is widely used in many industrial automation control fields such as...[Details]
As it is the end of the year and there are still a few days of holidays, I have nothing to do so I started playing with STM32 chips. Although I have used ST8 series 8-bit microcontr...[Details]
Abstract: This paper introduces a design method of an intelligent human heart rate detection device with AT89C2051 as the control core. The human pulse signal is collected by a photoelectric sens...[Details]
This paper summarizes the characteristics of several common road lighting test technologies and methods, and focuses on introducing a simple and efficient single-lamp actual measurement synthesis tes...[Details]
Simple waveform generator - square wave, triangle wave, sine wave This experiment attempts to make a waveform generator by effectively combining NE555 timer, resistors, capacitors and other comp...[Details]
Causes of Winding Short Circuit in Asynchronous Motors
(1) The motor runs under overload or overvoltage for a long time, causing the current in the winding to be too large and heat up, which a...[Details]
The iron core of the portable high-voltage test transformer is a single-frame type. The coil adopts a co-core cylindrical multi-layer tower structure. The primary low-voltage winding is wound on the ...[Details]
Circuit principle : Routing diodes VD1~VD4 form a bridge rectifier circuit, which is then limited by R1, filtered by C1, and stabilized by VD6 to obtain a 10V DC voltage to provide power for the 7...[Details]
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]
The rapid development of science and technology revolution has made the automotive industry undergo an unprecedented profound change. Among them, technological innovation, as the core driving force...[Details]
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