In the eyes of some people, the work of PCB layout engineers is a bit boring. Every day, they have to deal with thousands of wiring on the board, various packages, and repeat the work of pulling wires...
[i=s]This post was last edited by maychang on 2020-9-18 10:18[/i] Question 06: 1. We know that the Buck circuit has two working states: continuous inductor current and discontinuous inductor current...
As the core of the home IoT system, the gateway supports multiple applications, security protocols, and data through the central device it is located in. For example, IoT applications that support lig...
I would like to ask why my electric bicycle is occasionally locked by the remote control. I have never locked it with the remote control. The remote control has been in a drawer and has never been use...
The dry coupling ultrasonic testing method does not require the application of liquid coupling agents such as water or oil on the surface of the material to be tested. It is easy to operate and flexib...
LM311 is a voltage-frequency conversion chip produced by National Semiconductor (NS). After National Semiconductor was acquired by Texas Instruments (TI), it became a product produced by Texas Instrum...
Use the parallel port P1 of AT89S51 microcontroller to connect to a 4×4 matrix keyboard, use P1.0-P1.3 as input lines, and P1.4-P1.7 as output lines; display the "0-F" sequence of each key on the d...[Details]
Objective: Timer interrupt to achieve LED inversion The function to be implemented in this section is: when the system is running, the D1 small light will light up for 1 second and turn off for 1 sec...[Details]
Apple is the leader in the MEMS microphone trend. Since Apple launched Siri, the problem of insufficient voice recognition capabilities of smartphones has been highlighted. Although the iPhone 4S i...[Details]
In traditional active
PFC
, the AC input passes through the diode bridge rectifier after EMI filtering, but there is power dissipation during the rectification process, which includes the los...[Details]
Power devices, such as IGBT, Power MOSFET and Bipolar Power Transistor, need to be adequately protected to avoid damage caused by conditions such as undervoltage, loss of saturation, Miller effect,...[Details]
“Enterprises should not wait for Wi-Fi 7 network kit because Wi-Fi 6E can provide them with significant advantages today,” the Wi-Fi Alliance said. The alliance disputes messages from parts of the...[Details]
According to a report by IT Home in February, the shipment volume of Essential Phone in 2017 was only 88,000 units. The phone was launched in August 2017, and the price of the phone was once r...[Details]
Zoss Automotive Research Institute released the "2022 Multi-Domain Computing and Regional Controller Research Report". As smart cars develop towards higher levels of autonomous driving, the require...[Details]
At present, substation integrated automation technology has been widely used in my country. However, there are still some technical limitations in the application of the current substation integrated ...[Details]
Market research company Counterpoint recently released global smartphone sales data for 2019. The data showed that Samsung's shipments still ranked first. The iPhone XR once again dominated, with a...[Details]
1. Reasons affecting the high output voltage of the switching power supply ⑴ The models with voltage doubler rectification in the transmitter may work in voltage doubler rectification state inc...[Details]
With the extensive use of high-power LED light sources, the technical requirements for LED drivers are increasing day by day. High-voltage and high-power LED drivers can be directly connected to the p...[Details]
Without any technology, battery or software advantages, the company continues to suffer operating losses, its model is questioned, it is stuck in production capacity purgatory, and its founder is acc...[Details]
8051/89C51 has a total of 21 special registers, some of which are briefly introduced as follows: (1) Program Counter (PC) PC is a 16-bit counter that controls the execution order of the program. I...[Details]
PCB Design
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