I recently made a module for audio amplification and Bluetooth audio voltage collection. I planned to use a 9V stacked battery to power the op amp, and use 1117-5.0 and 1117-3.3 to step down the volta...
[i=s]This post was last edited by paulhyde on 2014-9-15 04:11[/i] When I work on instruments, I often need XY displays. I have been using the school's development board DE0, but I heard that some comm...
[i=s]This post was last edited by teaeet on 2015-8-14 15:21[/i]I have recently been watching Ming Deyang’s signaltap video, but I came across an exercise that I don’t know how to do. What should I do?...
[size=3]Guan Guan has something to say: In the past month, the forum has presented a pleasant atmosphere of knowledge sharing, pat pat pat! Guan Guan has seen many wonderful original posts, many wonde...
When designing a PCB, it is recommended to rearrange the component numbers in the order in which the components appear on the PCB (for example, from left to right, from top to bottom, from front to ba...
I spent a week making the hardware, and it also cost me more than 5,000 yuan, including PCB proofing fee, plus 500 yuan for materials. Yesterday, I was very excited. I got the board, mounted the chips...
introduction
my country has a vast territory and a large population. The scale of housing construction is huge, and the amount of residential construction is large and wide. It is still on t...[Details]
In
circuit design,
current
measurement
is widely used, and the main fields are divided into three categories: in measurement,
the electric meter
is used to measure the curre...[Details]
Analog engineers have traditionally struggled with complexity when designing power supplies that required multiple outputs, dynamic load sharing, hot-swap, or extensive fault-handling capabilities....[Details]
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
The reason for the light decay of white LEDs: the decline of phosphor performance
So far, the rapid decline of the luminous performance of white light LEDs, especially low-power white light LE...[Details]
5. Identifiers and keywords of C language
A complete PIC microcontroller C language program usually consists of six parts: include files (i.e. header files 1, variable definitions, variable de...[Details]
Aromatic gases are widely present in food, medicine, cosmetics and various daily chemical products, such as snacks, liquor, spices, Chinese herbal medicines, plasters, perfumes, soaps, shampoos, et...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
Investment in
the
medical device
industry has been on the rise in recent years. In the past two years, venture capital for medical devices has almost doubled, reaching $4 billion in 2007. Fr...[Details]
Capacitors
are basic components in various electronic devices and are widely used for bypassing, coupling,
filtering
, tuning, etc. in electronic circuits. However, to use capacitors,...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]