50mA current drives LD, the output power of LD is 30uW. 50mA current drives LD through the bias Tee circuit, so the output power of LD should also be 30uW. Why does the power of LD increase 20 times a...
Please give me some advice, thanks. . I have three questions: 1. Now RS232 serial port usually uses 9-frame connection line. The simplest connection is 3 connection lines, namely ground connection (co...
void delay(); void timer0(void); unsigned int count; main(void) { InitSysCtrl(); DINT; IER=0x0000; IFR=0x0000; InitPieCtrl(); InitPieVectTable(); There is no problem with the above program, and other ...
The USB OTG mouse is tuned. It is implemented. I did not involve the detailed screen because I was in a hurry. My program uses the arrow keys of the development board as a mouse. When the development ...
Add Display driver, and compile correctly after modification. Finally, the image can be generated, but there is no display after downloading to the board. The transplant I made is the smallest kernel....
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]
1 Introduction
As an emerging microfabrication technology, micro-electromechanical system (MEMS) technology has begun to be applied in various fields. It can integrate functions such as inform...[Details]
1 Introduction
In recent years, there have been many major advances in the production technology and processes of automotive headlights, which have greatly improved the performance of automoti...[Details]
Flooded Batteries
This battery developed in Germany can be used to power flashlights, strobe lights and toys as long as it is filled with water. This battery can be stored for 50 years and can...[Details]
Different initialization between C8051F and 80C51 series microcontrollers
In the past 30 years, major electronic component manufacturers in the world have launched their own unique single-chip...[Details]
Introduction
Liquid crystal, as a display device, is widely used in low-power products such as instruments, meters, and electronic equipment with its unique advantages. In the past, the displ...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
Introduction
In industrial control, speed measurement is often required. Generally, a contact tachometer is used. This tachometer must be placed against the center of the shaft to measure. It...[Details]
1 Introduction
With the rapid economic development, my country's electricity demand has been growing at a rate of more than 20% per year. According to the current economic development trend an...[Details]
Almost everyone in a student dormitory has a bedside lamp. But if you want to read for a while after turning off the lights and don't want to disturb your roommates' sleep, you may need a reading l...[Details]
The fluorescent lamps and energy-saving lamps we commonly use now have greatly improved luminous efficiency compared with the earlier ordinary incandescent lamps and have been widely used. With the...[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 (GP...[Details]
Introduction
my country's rapid economic growth is mainly due to the development of manufacturing and the acceleration of urbanization. However, urbanization cannot be achieved at the expense ...[Details]
For a long time, hackers have not had the opportunity to enter the control network of the car. But since the advent of Bluetooth technology and the use of wireless LAN bus systems, this situation w...[Details]
(1) Open circuit voltage of the battery
(2) Internal resistance of the battery
(3) Battery operating voltage
(4) Charging voltage
Charging voltage refers to the voltage applied ...[Details]
Analog electronics
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