A 100W/200R cement resistor is connected to the J14 load. I checked the power meter and found that the load power is less than 1W. The voltage given by PC6 is 3.3V. The meter shows that there is a cur...
As shown in the figure, the wiring method of the bidirectional thyristor in the circuit is that because it is bidirectional, I swapped T2 and T1. The thyristor was always in the on state and could not...
First of all, I wish you all a happy Chinese New Year. This year can actually be described as "turbulent". Electronic technology and chips have become the top search terms in 2019. Every fluctuation i...
How to use NE555 to build a square wave signal with a duty cycle of 50%, a signal amplitude of -5V~+5V, and an adjustable frequency (1khz~50khz). I have only learned the basics of circuit analysis and...
As shown in the picture, the actual boost voltage of the ME2139 DC-DC boost IC I used is 4.8V, and the current it can withstand is 2.5A. There is a series heating wire (2.5R) in the COIL, and I connec...
In this section, we will improve the button function implemented last time and provide a button response function. Currently, we only implement a switching function of turning the breathing light on a...
1 Introduction The lamp distribution photometer is a large-scale precision optical testing equipment and an important equipment for the measurement of lamp distribution photometry. The traditional di...[Details]
Have you heard of the Xiaopeng P5 that was launched last year? When I saw the home theater device in that car, I was amazed! For a movie lover like me, this thing is so cool! The home theater functio...[Details]
On July 3, Xu Qi, vice president of realme and president of realme global marketing, revealed that there is an "incredible" thing in the realme R&D laboratory. When interacting with netizens...[Details]
The main working process of UPS power supply is filtering, rectification and inversion. In addition, it also includes many auxiliary units, such as chargers and batteries, microprocessors, communic...[Details]
Trump tweeted that he will restart trade negotiations with Chinese President Xi Jinping during the G20 summit in Japan next week. The news warmed up the U.S. stock market, with all three major stock ...[Details]
As one of the representative models equipped with the Autopilot system, Tesla is a benchmark in the eyes of both industry insiders and consumers. At every product launch conference, Tesla CEO Elon Mu...[Details]
1 Introduction In power production and electrical testing, it is often necessary to measure power frequency voltage and frequency. There are many types of power frequency voltage meters and frequen...[Details]
What kind of effects can we get when we combine mobile phones and cars? We currently have two main methods: the classic method, mobile phone clip + mobile phone, used as a plug-in host. A brand new w...[Details]
In the following content, the editor will report on the difference between type-c adapters and adapter cables. If Type-C is one of the focuses you want to know, you might as well read this article ...[Details]
WiFi (Wireless Fidelity) mobile phone is a new VOIP phone based on WiFi technology. This phone can convert analog voice signals into data packets, and transmit them through hotspots (Access Point) to ...[Details]
Voltage drop is a common professional vocabulary among us wiring harness people, but some people still don’t know what voltage drop is and how to measure it. Next, the editor will give you a simple p...[Details]
1. Transplanting the YFFS2 file system The yffs file system supports nand devices more In the previous section, we transplanted the jffs2 file system (click to view) into the transplanted kernel. I...[Details]
Velodyne, the pioneer of LiDAR, has officially decided to lay off more than 20 employees in its Beijing office, including the direct sales team and some technical support, and to restore its sale...[Details]
The LCD interface of NUC972 contains OSD function. The OSD display effect of the LCD screen is similar to: pressing the menu button on the computer monitor, a small window for adjusting brightness an...[Details]
China-made electric vehicles have great global potential due to their cost-effectiveness, technological innovation and strong market demand. China's mature manufacturing ecosystem and leading batte...[Details]
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