[i=s] This post was last edited by paulhyde on 2014-9-15 09:09 [/i] Please give me a plan for making a 30W variable frequency power supply, preferably with a circuit design diagram :)...
This content is originally created by EEWORLD forum user chenbingjy . If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source.Chapter 11:...
1. Basic concepts of communication(1) History of the development of communicationsCommunication: smoke signals --- letters --- electronic communication (telegram, telephone, network signals).The two m...
Recently, a Mitsubishi A540-55K inverter was repaired. It was brought to us by a novice repairman because he could not repair it well. The machine originally had a broken module. After replacing the m...
Introduction : In this Power Tips, we will look at how the conduction power dissipation is traded off in a synchronous buck power stage as a function of duty cycle and FET resistance ratio. Making thi...
On April 24, Sungrow released its annual financial report. The report shows that in 2017, Sungrow's global shipments reached 16.5GW, of which domestic shipments reached 13.2GW, a year-on-year incre...[Details]
After we understand the use of libopencm3, we find that libopencm3 is only suitable for small projects. Its biggest feature is the convenience of USB. So when we configure large projects, is there a ...[Details]
In the Chinese automobile market, the trend of new energy vehicles and driverless cars is leading the transformation of China's automobile industry. As the world's largest automobile market, "Chinese...[Details]
This program mainly uses the comparison output function of the timer to generate PWM waves to control the LED. The comparison output of timer A corresponds to P2.3 P2.4. Therefore, a matching working...[Details]
Temperature, humidity and irradiance are must-measure items in the photovoltaic industry. However, most of the current data collection is done by storing data in USB flash drives for offline analys...[Details]
1. Brief description A summary of "How to build uClinux kernel transplantation on ARMSYS development board with S3C44B0X as core", including the analysis of Bootloader function and the key co...[Details]
I used the bit definition in my 51 program: bit flag. After defining it this way, I ran the program and downloaded it to the circuit board. I found that the flag was not the value I set, which led to...[Details]
The Vatican Secret Archives is one of the world's greatest historical collections, but many of its documents have never been transcribed. Recently, a project called Codice Ratio used a
combination...[Details]
Summary of STM32 peripheral DMA usage: 1. Select DAM mode according to your needs: (1) Circular mode—DMA_Mode = DMA_Mode_Circular (2) Normal mode—DMA_Mode = DMA_Mode_Normal 2. For Chanel3 of DMA1, t...[Details]
Interrupts and timers implement a 24-hour clock. The program is as follows: #include reg52.h #define PORTLEN P0 sbit bit_select = P2^0; sbit seg_select = P2^1; unsigned char src = {0x3f,0x06,0...[Details]
Today, the country attaches great importance to the Internet of Things, and the Internet of Everything has become the vision of all people in related industries. However, at the same time, masterin...[Details]
As one of the four major Chinese cool alliances, ZTE Mobile undoubtedly has a relatively deep foundation. However, this mobile phone brand has gradually declined in recent years. Now it is hoping t...[Details]
On May 7, 2013, Jia Yueting, wearing a black T-shirt, announced the official launch of
LeTV
TV Super TV, which set the entire color TV industry on fire and forced traditional manufacturers ...[Details]
The basic EMC command syntax is actually only 57/58. How to change it depends on your practice. However, it is easy for novices to make some mistakes, and some tricks of veterans are worth learning. ...[Details]
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