EMI Test Specifications and Measurements
IntroductionMost power applications must reduce electromagnetic interference (EMI) to meet requirements, and system designers must try various methods to reduc...
Solve y=(ax^2-bx+c)/(dx+e) by programming, and put the quotient and remainder in the data memory 1000H and 1001H respectively. (1) Given a=8, b=6, c=10, d=7, e=9, x=5, find y. (2) Given a=0.9, b=0.1, ...
Recently, in a case of 9-150V input and 12V 8A output flyback, several measures to improve efficiency were compared:
1. Further optimize the transformer and reduce RCD loss;
2. LCD clamping;
3. Active...
[i=s]This post was last edited by dsjsjf on 2019-3-1 11:16[/i] [url=https://en.eeworld.com/bbs/elecplay/content/103]The development board ST NUCLEO-H743ZI evaluated in this event is provided by STMicr...
What is the relationship between the speed ratio of the reduction mechanism and the lever ratio? What is the relationship between the force of the first gear and the last gear?For example, in the figu...
The software uses ADC (ESP-12) to read the voltage and it reads 1V, but when it is measured with an ammeter or oscilloscope, it is only 0.5V. At this time, the voltage read by ADC will also become 0.5...
Power electronics plays a vital role in modern technological advancements, especially in the areas of renewable energy and e-mobility. As the demand for higher efficiency and more compact component...[Details]
The new Range Rover Evoque is about to be launched, opening up the trend of a new era. The appearance has been boldly innovated, and it looks more refined and elegant than previous generations of mod...[Details]
The effective value-to-DC conversion circuit can obtain the real effective voltage of complex waveforms or pulses
Function of the circuit
When measuring AC current or voltage, if the waveform ...[Details]
According to Yonhap News Agency, LG Display has signed an agreement with Japan's Panasonic to supply transparent OLED panels to the latter. The panels will be used in Panasonic's 55-inch OLED display...[Details]
; Calculate the product of the maximum and minimum values of the 16 data in 40H~4FH of the internal RAM of MCS51. ;The maximum and minimum values are placed in 50H and 51H respectively, and the l...[Details]
Recently I was looking at using the SysTick timer to implement a delay function, and summarized my notes: 1. Library function related (1) The Systick part belongs to the NVIC control part, with a tot...[Details]
1. Introduction
In recent years, the forms and application scenarios of online audio and video products have become increasingly diverse, and the development of the epidemic has accelerated th...[Details]
According to a test data from the Shanghai Environmental Radiation Research and Monitoring Center, the radiation value of a 1000W hair dryer used in ordinary households is about 350mG (mG: milligr...[Details]
Recently, Anhui Yunta Electronic Technology Co., Ltd. (hereinafter referred to as "Yunta Technology"), in conjunction with the School of Microelectronics of the University of Science and Technology o...[Details]
introduction
TMS320F2407A is a high-speed, high-performance, low-cost microprocessor. It integrates many external expansion devices required by numerical control systems and can realize SP...[Details]
0 Introduction
With the increasing number of missile weapon equipment spare parts, the testing and maintenance of the various types of single-board spare parts delivered to the troops is particularl...[Details]
At present, most electronic instruments are composed of IC (integrated circuit) and LSI (large-scale integrated circuit), but crystal transistors, diodes, etc. as discrete semiconductor components ar...[Details]
Recently, Wuhan Xinxin Integrated Circuit Manufacturing Co., Ltd. (hereinafter referred to as "Wuhan Xinxin"), a leading integrated circuit R&D and manufacturing company, has carried out in-depth coo...[Details]
SPI (Serial Peripheral Interface) is a synchronous serial data transmission standard proposed by Motorola. It is a high-speed, full-duplex, synchronous communication bus that is widely used in many d...[Details]
The use of thickness gauges is the same as the use of other instruments. It is necessary to master the instrument performance and understand the test conditions. Coating thickness gauges using the ma...[Details]
Analogue and Mixed Signal
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