1. Directly connect a small resistor in series for AD acquisition 2. Add an op amp for AD acquisition 3. Use an op amp plus a linear optical isolation and then AD acquisition 4. Use max472 current to ...
Hello everyone! Recently, I have installed several LED street lamps in my company. When I connect the 120W street lamp to the power supply, the street lamp can light up normally, but when I turn off t...
I am making an LDO circuit, which uses the LM201 op amp. In theory, shouldn't the voltages of the two pins of the op amp be basically equal? However, during my experiment, I found that the voltage dif...
Similar to the prevention of influenza A! :lol [b][color=blue]Suppress the interference source, cut off the interference propagation path, and improve the anti-interference performance of sensitive de...
[align=left][b]1 Introduction[/b][/align][align=left][font=Arial]In the 1960s, especially in the 1970s, due to the rapid development of microwave semiconductor circuits, microwaves have played an incr...
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
System design is a complex process. It is not enough to just use ICs. There are many details to consider. This article uses a high-fidelity music playback system as an example to introduce how to s...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
Since the No. 4 blast furnace of Handan Iron and Steel was put into operation in 1993, its external equipment has been seriously aged, and the original PLC control system TDC3000 of the hot blast furn...[Details]
1 Introduction
In recent years, there have been many major advances in the production technology and processes of automotive headlights, which have greatly improved the performance of automoti...[Details]
With the advocacy and implementation of the government's Safe City Plan, the security market has increasingly higher requirements for the clarity of surveillance images. Imagine that after a case o...[Details]
Different initialization between C8051F and 80C51 series microcontrollers
In the past 30 years, major electronic component manufacturers in the world have launched their own unique single-chip...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
System Overview
The system consists of a signal preprocessing circuit, a single-chip computer AT89C2051, a systematic LED display module, a serial port data storage circuit and system software...[Details]
In the "digital pressure measurement" experimental device of applied physics, the subject technical knowledge of analog circuits, digital circuits, sensors and single-chip microcomputers is used. In o...[Details]
People who often surf the Internet until late at night, their families always complain that turning on the big lights in the living room affects their rest, but some people don't have keyboard ligh...[Details]
Almost everyone in a student dormitory has a bedside lamp. But if you want to read for a while after turning off the lights and don't want to disturb your roommates' sleep, you may need a reading l...[Details]
The fluorescent lamps and energy-saving lamps we commonly use now have greatly improved luminous efficiency compared with the earlier ordinary incandescent lamps and have been widely used. With the...[Details]
One in five car failures are caused by batteries, a problem that will become more serious in the coming years as electric-by-wire, start/stop engine management and hybrid (electric/gas) vehicles be...[Details]