[i=s]This post was last edited by michael_llh on 2016-8-2 09:35[/i] [font=新宋体][size=4] Now everyone should have received the UFUN learning board. In order to facilitate everyone's learning, here we ha...
I recently used 2812 and found two very puzzling problems. 1. I used 18K and 22K resistor divider network to convert 5V TTL signal into 3.3V TTL signal, but it didn't work at all. The low level turned...
Hello everyone, I am an absolute novice and rookie. I used to work in microwave design in Shanghai for more than two years, and then I returned to Dalian due to some family reasons. Dalian is more eng...
The basic principle of pulse width modulation (PWM): The control method is to control the on and off of the switching devices in the inverter circuit so that a series of pulses with equal amplitude ar...
This article is translated from Microwaves101 | Microwave Rules of Thumb, which summarizes some rules of thumb in microwave circuits. The so-called rules of thumb are some rules summarized over a long...
Here we introduce a simple and easy-to-make fun production - magic lamp. The circuit is shown in Figure 1. As long as you hold the magic wand with a permanent magnet in your hand and shake it from bot...
China's new energy vehicles are in a transition period from research and development to real industrial development. In 2012, with the intensive launch of new energy vehicle policy planning, the de...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
Editor's note: In order to help technicians or engineers who have knowledge of PIC microcontroller assembly language quickly master the method of using C language to program PIC microcontrollers, t...[Details]
The automotive lighting and signal control system is responsible for controlling the vehicle's lighting, signal lights, electric horns, reversing and brake buzzers. Traditional automotive lighting...[Details]
The typical fault troubleshooting listed below is for reference of maintenance personnel.
When the computer is turned on, the indicator light is off and there is no screen display
Mainte...[Details]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
LED lighting: Basic circuit design can be completed in as little as one day
Semiconductor manufacturers are also getting involved in the LED lighting business. The power circuit of LED req...[Details]
Traditional
virtual instruments
consist of a data acquisition
board
based on PCI bus and
corresponding software. However, with
the rapid development of
computer
network techno...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
The ARINC429 bus is one of the most commonly used communication buses between various subsystems of avionics. As the "skeleton" of modern avionics systems, once the bus system or the attached airbo...[Details]
introduction
The core features of mobile value-added service products are mobility, immediacy and personalization. Mobile value-added services are a new service mode that is rapidly developing...[Details]
UDN2916LB is a two-phase stepper motor bipolar driver integrated circuit launched by SANKEN. It can drive dual-winding bipolar stepper motors and is particularly suitable for controlling dual-step ...[Details]
New Automobile
Hydraulic Clutch
The hydraulic control system uses almost 100% advanced engineering plastics, which overcomes the shortcomings of the main and branch cylinders of metal clutc...[Details]
An intelligent vehicle is a robot that can automatically drive in an environment according to a pre-set mode, or it can autonomously perform specific operations according to the on-site situation. ...[Details]