In order to avoid confusion and trouble caused by different radio frequency usage standards in different countries, most countries in the world abide by the standards of the International Telecommunic...
【Abstract】 In order to design a small-sized, simple-structured, low-cost ultra-wideband high-low frequency nested antenna (high frequency: 1 427-2 690 MHz, low frequency 690-960 MHz), this paper first...
The answer uses current series negative feedback. The answer is compiled from the postgraduate entrance examination materials.
I have a few questions
1. The load is a 50Ω output resistor. Shouldn't vo...
[i=s]This post was last edited by littleshrimp on 2022-5-25 17:03[/i]This time we are going to dismantle the display screens of two Audi cars. One is a 5.8-inch display screen produced by Alpine that ...
The "Download and Comment on the Materials" activity in April has been successfully concluded. Netizens commented on the materials very actively, and everyone's enthusiasm can be felt across the scree...
Admittedly, the energy cost savings of LED technology are not significant if compared with energy-saving lamps or fluorescent lamps. But from another perspective, if you take into account the maint...[Details]
Leaker l0vetodream suggests that Apple may unveil its redesigned, colorful iMac at its April 21 event. In a tweet, the tipster posted an image of the Apple logo used to promote an upcoming event, a...[Details]
In fact, the scope of use of torque motors is very limited.
1. How to ensure that the torque motor controller and mechanical ratio are within the optimal use range of the torque motor so that ...[Details]
Let's take the startup code of the ARM Cortex_M3 bare core as an example to do a simple analysis. First, three tasks are completed in the startup file: 1. Initialization of stack and heap 2. Locate ...[Details]
Analysis of AVR's IO port characteristics:
Analyze the IO pin Pxn. Only when DDRxn is 1, the controllable unidirectional switch will work, and the value of PORTxn can be sent to Pxn through the c...[Details]
Precautions for using thermal anemometer: 1. It is forbidden to use the anemometer in a flammable gas environment. 2. It is forbidden to place the anemometer probe in a flammable gas. Otherwise, it ...[Details]
Biosensors
are analytical tools or systems composed of immobilized biomaterials with chemical molecular recognition functions, transducer devices and signal amplification devices.
1 Basic pri...[Details]
The electric drive axle is derived from the traditional axle. It is the transmission system of the car and plays the role of bearing load, reducing speed, increasing torque, ensuring the differenti...[Details]
Rumors that Huawei is going to make self-driving cars have frequently appeared in the media and industry insiders in recent years. Indeed, with the rapid development of 5G and AI, it is hard to imagi...[Details]
//Environment: winavr+avr studio char temp=0; ISR(TIMER1_COMPA_vect )//interrupt function { // user code here temp++; if (temp==10) temp=0; PORTA=temp; DDRA=0xff; } void ...[Details]
I sprained my back the other day and had to sleep on the floor for a few nights. The first night I was woken by the vacuum. Not only was it noisy, (although very quiet), but it kept circling me, bu...[Details]
Japanese industrial and consumer electronics manufacturer Sharp has developed the world's most efficient photovoltaic cell to date, according to a statement from the company.
Sharp said the ph...[Details]
According to the patent compilation rules set by the Patent Cooperation Treaty in 1970, China became the country with the most patent applications in 2019. This is the first time since 1978 that the ...[Details]
Mouser Electronics, an electronic component distributor focused on introducing new products to drive industry innovation, announced that it will continue to sponsor outstanding Chinese racing driver ...[Details]
Affected by the downturn in the global economy, TSMC and Innolux have recently encouraged employees to take vacations. Wenmao recently held a press conference. As the capacity utilization rate droppe...[Details]