A FPGA circuit board was working fine before, but then the 7805 burned out, so I replaced it with a new one. Then VCC and GND were shorted. The integrated blocks on the board were tested and found to ...
I need to use a CPLD from Altera to expand IO and communicate with the CPU. The internal logic of the CPLD is relatively simple, basically combinational logic. The question now is how to determine the...
[color=#000][font=-apple-system-font, "][size=19px]Xiaomi Group announced its 2018 annual report on the 19th: Xiaomi achieved revenue of 174.915 billion yuan. So far, the five-year, billion-dollar bet...
After my code is compiled, a warming occurs, and the content is as follows: Warning: LATCH primitive "ether_mac:ether_mac|ethermac_recv:recv|fsm_ram_wr_ns.RECV_PRENUM_7327" is permanently enabled. Exc...
I saw the following infrared code structure in a tutorial. I don't understand how the 1.125ms period representing 0 is converted into 0x109c0? How is the 2.25ms period representing 1 converted into 0x...
In this case, I wonder how you guys route the wires? I used padless vias with inner and outer diameters of 0.3mm, and routed them from the bottom layer. Now I have a problem, some power vias cannot be...
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
introduction
Since the beginning of the 21st century, the world of information has changed rapidly. Maybe a high-tech product will be released today and a better similar product will be releas...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
As LEDs continue to improve in almost every aspect of performance and cost, LED lighting is being used in an increasingly wide range of applications, among which LED street lights are a focus of in...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
We know that microcontroller development tools generally include real-time online emulators and programmers. Among them, online emulators are very good tools, but they are also more expensive...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
12v Lead Acid batteries used in trucks, cars, RVs and uninterruptible power supplies are usually rated at 12V. This circuit monitors the battery, the charge and discharge curves, gives the cu...[Details]
Among the many members of the single-chip microcomputer family, the MCS-51 series of single-chip microcomputers has occupied the main market of industrial measurement and control and automation eng...[Details]
From the previous section, we have learned that the timer/counter in the microcontroller can have multiple uses, so how can I make them work for the purpose I need? This requires setting the timer/...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
D5026A is a driver IC designed by Shanghai Debei Electronics for energy-saving LED display screens. Its design concept is energy-saving and compatible with existing solutions, that is, it can be ...[Details]
/100a180fw150xt_pdf/pg_0001.png)
PCB Design
京公网安备 11010802033920号
EEWORLD/100a180fw150xt_pdf/1.png)
/100a180fw150xt_pdf/2.png)
/100a180fw150xt_pdf/3.png)
/100a180fw150xt_pdf/4.png)
/100a180fw150xt_pdf/5.png)
/100a180fw150xt_pdf/pg_0002.png)
/100a180fw150xt_pdf/pg_0003.png)
/100a180fw150xt_pdf/pg_0004.png)
/100a180fw150xt_pdf/pg_0005.png)
