The voltages of the two input sections of the op amp are not equal and the voltage at one end is constantly decreasing. How can I solve this problem? I suspect the op amp is broken, but I changed it t...
LED light source technology is becoming more mature, and the luminous lumens per watt are increasing rapidly, which has led to a gradual price reduction. For example, the price of a 1W LED light sourc...
I use ZigBee to make a wireless alarm substation. The sensor transmits data to the substation through ZigBee. In order to distinguish each sensor, I turned on the module's hardware address recognition...
As shown in the figure, the output of the built-in DAC of STM32 is a step wave, which is amplified by the amplifier circuit to drive the piezoelectric ceramic. However, after the piezoelectric ceramic...
I made a product in the lab. GPS communicates with f5529, and 5529 sends the received GPS data to GPRS. However, when communicating with GPS, f5529 always restarts uninterruptedly. I don’t know why. I...
This design requires using a single-chip microcomputer or single-chip microcomputer to control DDS to generate signals of multiple frequencies, and then use a mechanical filter to receive them at the ...
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]
0 Introduction
With the development of my country's economy, the number of motor vehicles continues to increase. The growth of existing roads and other hardware facilities can no longer meet t...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[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]
With concerns about the growing energy crisis, motor efficiency has become an important and timely topic. This is because motors use 63% to 70% of the electricity produced in the United States and ...[Details]
The rectified DC voltage is then converted back to AC using power electronics such as insulated gate bipolar transistors.
The output voltage is switched on and off at a high frequency, control...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
1. Overview
At present, an information revolution is in the ascendant around the world, led by microelectronics, computers and communication technologies, and centered on information technolog...[Details]
1 Introduction
With the improvement of people's quality of life, lamps are no longer just basic indoor lighting tools, but also a kind of practical art for architectural decoration. When ther...[Details]
With the rapid development of cities and the improvement of citizens' living standards, the number of various vehicles in cities is growing, and the demand for parking spaces in major commercial an...[Details]
Key Points
1. Now, in addition to high-end smartphones and tablets, users also expect to use touch screens in other applications, and they are gradually appearing in cars and instruments.
...[Details]
Overview
By transmitting ultrasonic energy into the human body and receiving and processing the returning reflected signals, phased array ultrasound systems can generate images of organs and s...[Details]
Electric bicycles have long been a means of transportation for lower-income groups due to their affordability. The largest concentrated expense in the use of electric vehicles is the cost of replac...[Details]
Analog electronics
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