Many articles simply introduce the calculation of the phase shift angle of a single-stage RC phase shift circuit. The phase shift angle is arctg(wRC). However, as shown in the figure below, how to cal...
MCU low power consumption1. What is the difference between Shuroff Mode and Stop Mode? In what cases should Shutdown Mode or Stop Mode be used?2. What is the difference between Deep Sleep Mode and Sle...
First of all, you must learn discrete components well and thoroughly. For example: resistors, capacitors, diodes, voltage regulators, triodes, comparators, op amps, MOSFETs, etc. Discrete components a...
The keyboard is a switch matrix composed of several keys. It is the most commonly used input device for microcomputers. Users can input instructions, addresses and data into the computer through the k...
Today I received the forum's 10th anniversary event --- STM32L011 development board. The express delivery showed that it had arrived on the 12th, but I never got it. Finally, it was at the doorman's p...
I have a question: How to use extended memory in Keil, such as 89c51+2764 (8k*8 rom) in two cases: 1. The program is larger than 4k, such as 6k, so after I generate the hex file (continuous), how can ...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
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]
Assume that data is read from 8-bit AD (if it is a higher-bit AD, the data type can be defined as int), the subroutine is get_ad();
1. Limited secondary filtering
/* A value can be adjust...[Details]
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
Floating-point digital signal processing has become a constant requirement for precision technology, often in applications requiring high accuracy in areas such as aviation, industrial machinery, a...[Details]
Due to the significant increase in electronic devices in automotive and industrial applications, the automotive and industrial markets continue to play an important role in China's electronics in...[Details]
1 Introduction
Solar street lights are mainly composed of four parts: solar photovoltaic cell components, batteries, charge and discharge controllers, and lighting fixtures. The bo...[Details]
Product series: PB-B-RS232/485 interface (hereinafter sometimes referred to as "interface") is a product in the PROFIBUS bus bridge series.
The main purpose of the bridge series ...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
Nippon Electric Works and Volvo Technology Japan have developed a wireless power supply system for electric vehicles (EVs). Using this system, the two companies have successfully conducted an exper...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
Overview
In spectral measurement, photomultiplier tubes (PMT) and charge-coupled devices (CCD) are often used as photoelectric converters. PMT is used in slow-changing, high-precision spectral...[Details]
Analog electronics
京公网安备 11010802033920号
EEWORLD
