[i=s]This post was last edited by tiankai001 on 2018-11-29 11:35[/i] [align=left][color=#0000ff][backcolor=rgb(237, 235, 235)][font=微软雅黑][size=4] Radio - this name is familiar to everyone, especially ...
Now I want to process a microphone to make it sensitive to high frequencies and insensitive to low frequencies.
Are there any good materials or methods to solve this problem?...
This is a new ESP32 development board that will be released soon.[b]Main Features[/b]: [list] [*]32-bit dual core processor operating at 240 MHz [*]2.4 GHz Wi-Fi - 802.11b/g/n [*]Bluetooth BLE 4.2 [*]...
Recently, I need to use the core control board of STM32F103C8T6 when doing a project. Before doing the project, I chose two types of boards.Both core boards meet the project requirements. Because the ...
GC4931F/S is a three-phase brushless DC motor pre-driver chip. The chip can drive N-type power MOSFET with a maximum power supply of 36V. The chip state switching logic is determined by three Hall inp...
An op amp should have approximately zero voltage between its two inputs, so these diodes will never be forward biased in a standard op amp circuit… or will they?Previously, we discussed the effect of ...
The microwave vector network analyzer is mainly composed of four major parts: synthetic sweep source (excitation source), test device (signal separation part), receiving part, and microprocessor. The...[Details]
Dr. Song Tingting (transliteration) and Distinguished Professor Ma Qian (transliteration) (from left to right) and the team use a laser 3D printer to produce titanium alloy. Image source: RMIT Univ...[Details]
All media equipment in the multimedia classroom is centrally managed and controlled by the central control system. Its biggest feature is to simplify the complex and cumbersome operation process, ...[Details]
Assisted driving (with the ultimate goal of autonomous driving) has become an important trend in the development of automobiles. ADAS systems are built by combining devices with different sensing met...[Details]
For every player standing on the chessboard, "possessing core technology - being able to make cores independently is the key to survival." Therefore, self-developed chips have become an unavoidable p...[Details]
ECP2459 is a current mode DC-DC asynchronous buck converter. Built-in MOSFET can improve high power conversion efficiency, and can achieve a peak output current of less than 1A and a load of le...[Details]
Global warming has gradually become a topic of conversation among people, not only attracting the attention of the public, but also the industrial sector has taken action to vigorously promote energy ...[Details]
On May 11, Shanghai Steel Union released the latest data showing that battery-grade lithium carbonate rose by 13,500 yuan/ton, with an average price of 230,000 yuan/ton, and industrial-grade lithium c...[Details]
LED luminous characters are luminous characters made with light-emitting diodes as light sources. LEDs can save a lot of electricity for the country and users, and save a lot of work hours for cont...[Details]
In electronic circuits, such as transistor circuits and field effect transistor circuits, stable DC power supplies provide them with standard operating voltages. They process AC signals. The electrom...[Details]
This paper introduces the software and hardware design method of vacuum fluorescent screen display in multifunctional kitchen control system. The system uses PIC16F72 single-chip microcomputer as...[Details]
Recharge NiMH batteries via USB
Figure 1. USB-powered single-cell NiMH switch-mode charger.
Although Li+ batteries have apparently taken over the portable world, NiMH batteries ha...[Details]
The principle of an oscilloscope is simply an ADC conversion, which then displays the different voltages collected on the screen. Today we will talk about what the oscilloscope sampling rate is all a...[Details]
The "Technical Measures for Preventing Accidents in Capacitor Installations" stipulates that for the high-voltage parallel capacitor part, the capacitance of a single capacitor in the capacitor grou...[Details]
This application note provides design guidelines for the optomechanical part of the MAX25205 and MAX25405 gesture sensors. A key design issue in gesture detection systems based on infrared (IR) tec...[Details]
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