RT, I'm curious about the black glass face recognition attendance machines. What kind of sensors do they use to determine if there is someone in front of them? If the camera is turned on all day for f...
Dear netizens: I saw on the Internet that a company in North America has developed a one-cent RFID tag. This will be a great boost to the popularization of RFID. Although it cannot be applied on a lar...
Ultra-wideband (UWB) is a wireless radio frequency technology that enables home appliances, computer peripherals, and mobile devices to transmit data at high speeds over short distances while consumin...
Should the filter capacitor and bleeder resistor in the circuit be placed before or after the anti-reverse polarity diode?
What will happen if a capacitor of several μF is placed before the reverse-co...
Today I received a call from SF Express saying that a package had arrived. I asked them to leave it at Cainiao Supermarket. I went to pick it up after noon. Wow, it was huge! It was bigger than I imag...
The main parameters of antenna performance include radiation pattern, gain, input impedance, standing wave ratio, polarization square test, etc. The spectrum analyzer is mainly used to test the two ra...[Details]
Challenges of long-life battery power Batteries have become a major alternative energy source for electric vehicles and a wide range of other types of portable devices. Lithium-ion batteries are ver...[Details]
1. Problem Statement
Application Overview
The design of motor control systems is a multidisciplinary problem involving mechanical, electrical, and control systems. OPTIMUS can explo...[Details]
The Chengdu Municipal Bureau of Economy and Information Technology issued a letter soliciting the "Chengdu New Energy Vehicle Battery Swapping Mode Application Pilot Implementation Plan (Draft for Co...[Details]
There are two ways to trigger the external interrupt 0 (INT0) and external interrupt 1 (INT1) of the STC15 series MCU, the rising edge and falling edge can be triggered and the falling edge only trig...[Details]
1.
Types of
batteries
commonly used in UPS
, factors affecting
battery
life, advantages and disadvantages of different types of batteries:
There are three types of batteries use...[Details]
Many electronic components look similar but have different functions, uses and powers. If you don't distinguish them carefully when purchasing, it is easy to buy the wrong electronic components. Wh...[Details]
Gentex , a supplier of automotive automatic dimming rearview mirrors and electronics, has developed a Full Display Mirror (FDM). FDM is an intelligent rearview mirror system that uses a custom camera...[Details]
The reasons for the short range of electric vehicles mainly involve the following aspects:
1. Limited battery capacity: The battery capacity used in electric vehicles determines the amount of...[Details]
Although primary protection is generally considered reliable, the protection IC or MOS-FET may be damaged when the electrostatic discharge voltage is too high or the temperature is too high, and the i...[Details]
The principle block diagram of LCD
TV is shown in the figure below, which mainly consists of the following parts:
1. Ordinary analog TV signal processing module. This ...[Details]
A few days ago, Apple released the third-generation iPhone SE, equipped with Apple’s latest and most powerful A15 Bionic chip, which means that this entry-level iPhone will provide similar excellent ...[Details]
As electric vehicles continue to catch fire, the safety of batteries and electric vehicles as a whole has been pushed to the forefront. As a member of the new car-making forces, Qiantu, whose parent ...[Details]
Qingke Information’s latest whole-house smart system product “Smart Home Elf” and MXMESH solution can help B-end manufacturers achieve private deployment and help C-end users achieve local linkage an...[Details]
From the internal logic structure of ARM , we can see that compared with other microprocessors, such as 8051, when performing data logic addition and subtraction operations, it has a barrel shifter. ...[Details]
Analog electronics
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