[i=s]This post was last edited by littleshrimp on 2019-9-8 09:32[/i]Use a 4th order multi-feedback bandpass filter, the circuit in this post https://en.eeworld.com/bbs/forum.php?mod=viewthreadtid=1088...
[i=s] This post was last edited by Yunhu Congbai on 2022-4-2 14:20 [/i] ## Background This article aims to describe the current status of mobile phone fast charging technology, so that amateurs can qu...
The experimental project uses MSP430F5529 as the main control, WiFi module to transmit data, DHT11 module to detect temperature and humidity, and also detects light conditions and toxic gas detection ...
Typically, IoT systems or IoT sensor communication networks are designed using popular standard technologies such as Zigbee, Bluetooth, Z-wave, WiFi, etc., so that devices can communicate and collabor...
[i=s]This post was last edited by mmmllb on 2022-4-2 15:11[/i]I am currently preparing to make a product that needs to integrate a module for measuring blood pressure and heart rate. I would like to a...
In recent years, consumer products such as vacuum cleaners, power tools (such as drills, saws and screwdrivers) and garden tools (such as lawn mowers, edgers and lawn tractors) have transitioned from ...
The 8-bit single-chip microcomputer is widely used in some simple controllers due to its simple internal structure, small size and low cost. Even in this century, it still occupies a considerable sha...[Details]
Today, at the "Huawei 2021 Global Analyst Conference" held in Shenzhen, Huawei's Vice Chairman and Rotating Chairman Xu Zhijun said in his speech that the global panic stockpiling caused by US sancti...[Details]
On May 11, Tesla pushed the FSD Beta V11.4.1 update to North American users. This V11.4.1 version has made major architectural improvements. According to Musk, this version can theoretically be rel...[Details]
Hello everyone, signal modulation technology is now used in many fields. I learned from communicating with customers that they need to perform frequency analysis on FM signals. So how should we use Z...[Details]
The Spray Quantitative Tester is used to determine the surface wettability of fabrics. It consists of a metal frame allowing distilled water to be sprayed through a nozzle onto the specimen at 45° an...[Details]
The Y73s 5G has now been announced on vivo’s website and it’s the latest addition to the company’s lineup of mid-range devices. The dimensions of the phone are 161 x 74.04 x 7.73mm and it weighs 17...[Details]
Yesterday, realme founder and CEO Li Bingzhong announced that realme's next-generation flagship GT2 Pro will be launched soon. According to the official introduction, realme GT2 Pro is the first ultr...[Details]
On July 25, the "Incremental Distribution Network Planning for the Pilot Reform of Incremental Distribution Business in Xingfa Industrial Park in Xingshan, Yichang" (hereinafter referred to as the ...[Details]
I never really understood the sleep instruction before. Recently, when I was making a smart water meter product, I used an 8-bit microcontroller PIC16F690. When I saw the sleep instruction in the pro...[Details]
Recently, the National Development and Reform Commission and the National Energy Administration issued the "Notice on Standardizing the Fourth Batch of Incremental Distribution Business Reform Pilo...[Details]
Field effect tube pin diagram The pin arrangement of some field effect tubes is shown in Figure 1. In addition, we can use the multimeter Rx1k gear to identify the electrodes of the junction fiel...[Details]
There are various types of capacitors, which can be divided into ceramic capacitors, supercapacitors, and electrolytic capacitors according to the production materials. As an indispensable electron...[Details]
Before using the oscilloscope, it must be calibrated. The so-called calibration of the oscilloscope is to correctly debug the original waveform before testing. In other words, the calibrated waveform...[Details]
Everyone has always been very cautious about the high-voltage batteries of electric vehicles. We all know that poor insulation can lead to leakage and personal injury. However, as an engineering st...[Details]
The mechanical part of an industrial robot is its core component, which mainly includes the following aspects:
Robot body
The robot body is the basic structure of the industrial rob...[Details]
Analog electronics
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