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　　Abstract: Finite element fluid thermal analysis software (CFD) is often used to model and simulate the heat dissipation of LED lamps. The parameter analysis, calculation and setting related to heat...[Details]

1. The relay does not disconnect: (1) The load current is greater than the rated switching current of the SSR, which will cause the relay to be permanently short-circuited. In this case, an SSR wit...[Details]

When using smart driving, you must be concerned about the safety of the system, right? How is the algorithm tested and verified before it is installed on the actual vehicle? A few months ago, we ma...[Details]

The so-called "floating" measurement means that neither of the two points of the measurement is at ground potential. This measurement is also often called differential measurement.   The voltag...[Details]

　　The article specifically introduces 22 common concepts about ARM. 　　1. Explanation of some common English abbreviations in ARM 　　MSB: most significant bit; 　　LSB: least significant bit; 　　AHB: Adva...[Details]

Car owners who travel with children should be careful. Before parking and locking the car, they must carefully check whether the children have been forgotten in the car. Especially in summer, the tem...[Details]

1 Introduction As an important part of the automatic fire alarm system, the fire floor display is a digital fire alarm display device installed on the floor or independent fire zone. I...[Details]

introduction In many embedded control systems, the system must complete a large amount of information collection and complex algorithms, and also realize precise control functions. The ARM9 microco...[Details]

1 Introduction An integrated circuit (IC) is a circuit system that uses oxidation, etching, diffusion and other methods to combine numerous electronic circuits into various electronic componen...[Details]

Figure 1 (a) shows the control principle of the hysteritic current control Boost PFC circuit. The current detected in the figure is the inductor current. The current upper limit value imax and lowe...[Details]

I recently wrote a program. Because of the need to consider reliability, I need to add a watchdog function to the program. I checked the relevant information of STM32 and used the library file to impl...[Details]

STM Learning Notes - Using a Timer to Implement a Firefly Lamp In the sixth note, I used software delay method to realize fireflies. After learning about timers, of course I have to use th...[Details]

Filter capacitors, common-mode inductors, and magnetic beads are common in EMC design circuits and are also three powerful tools for eliminating electromagnetic interference. I believe that many en...[Details]

     Patent images show that OPPO seems to be developing a new detachable phone. The patent was submitted to the World Intellectual Property Organization (WIPO) as early as December 2019 and was publ...[Details]

There are significant differences between the 6410 DMA controller and the 2440 DMA controller. DMA operation steps in S3C6410: 1. Decide whether to use secure DMAC (SDMAC) or general DMAC...[Details]