In order to make it easier for everyone to understand the amplifier circuit, let’s first introduce some basic concepts of the amplifier circuit.
(1) Input resistance and output resistanceAn amplifier ...
The efficiency of the 50HZ transformer is very low at high frequency. I don't know why. Some say it is caused by eddy current loss of the material. However, the design books of switching power supplie...
Our company wants to make a washing machine, but I don't know how to write control algorithms, so I bought a development board.The development board is a speed closed loop. I heard that the washing ma...
I use STM32F767 to write serial port program. Originally, PE8 and PE7 could send and receive data. PE8 and PE7 are serial port 7. Later, the hardware was changed to PF7 and PF6, which are also serial ...
Today I will tell you about the characteristics of DC power supplies, such as dry batteries, storage batteries, DC generators, etc. DC power supplies are supplied to circuits by converting other forms...
How to choose between JTAG protocol and SWD protocol for MCU programming and debugging? It depends on the specific MCU?
What are their pin definitions? Why do I see so many different markings online? ...
BlackBerry recently announced that it has been positioned as a Leader in the Unified Endpoint Management (UEM) market for four consecutive years by Gartner, the world's leading research and advisory ...[Details]
What is absolute output power? The network analyzer absolute output power measurement displays the power at the analyzer input port. This power is absolute: not referenced to incident or source power...[Details]
Smart contact lenses are products that attach to the human eye like ordinary contact lenses, but can provide a variety of information, and their research on the lens will also aid diagnosis and treat...[Details]
Single-chip programmer products is a low-cost development programmer. It can program most of Microchip's flash microcontrollers. Single-chip programmers are designed for development programming. For ...[Details]
Austrian microelectronics, a leading supplier of high-performance analog ICs and sensors , today announced the launch of a configurable power management chip, the AS3715, which enables OEMs to implem...[Details]
AppleCare+ is Apple's high-end technical support service for iPhone, Mac, iPad and Apple Watch, which also covers accidental damage. Taking iPhone as an example, the cost of this service is ab...[Details]
With
the development of
industrial automation
, high efficiency and energy saving will become an important trend of intelligent factories. More and more factories choose some automatic intel...[Details]
EPB, electronic parking brake system (Electronic Parking Brake), is used to replace the traditional parking brake device based on mechanical levers and chains, providing drivers with simpler and safe...[Details]
As shown in the figure. The temperature control range of the electric soldering iron is 100℃～400℃, the temperature adjustment mark indicates low, medium and high positions, the temperature control ac...[Details]
According to Sina Technology, Wang Chenglu, President of Huawei Consumer BG Software Department, said in his speech at the "2020 Technology Billboard" that the development of Hongmeng OS was launched...[Details]
IT Home reported on March 16 that at the end of 2021, Apple Store and authorized service providers obtained the right to use the new "AirPods Firmware Updater" diagnostic tool, which can update the A...[Details]
The hardware of this system design is composed of a microcontroller
LPC247
8 based on the ARM7TDMI-S core, a rewritable low-power USB flash drive, a dot matrix LCD display module, etc., which...[Details]
This article is about the 1937 timer. At first, I was confused by the terms such as crystal frequency, clock frequency, oscillation period, oscillation frequency, instruction period, instruction freq...[Details]
According to foreign media reports, Canada's new Conservative Party leader Erin O'Toole tweeted yesterday (18th) that he plans to ban Huawei from developing the country's 5G network. Erin O'Toole tw...[Details]
The driver is divided into two types: running on Ubuntu and running on the ARM development board. We will test them separately.
1. Source code
empty#include linux init.h=""
...[Details]
Analogue and Mixed Signal
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