The figure shows the related voltage pulse experiment. It can be seen that in the 12V system, the highest US reaches -150V. So when we choose the input filter capacitor, should we choose the one with ...
LPWA currently includes a variety of technologies, such as LoRa, Sigfox, Weightless and NB-IoT, among which LoRa has entered China since 2013. It is expected that the shipment volume of Semtech's SX12...
Since udelay is an infinite loop, will the processor interrupt interrupt the udelay function to handle the interrupt, and then handle the high-priority task after the interrupt exits?...
Questions: The default SRAM size of AT32F403, AT32F403A, AT32F407 is 96KB, which can be modified to 224KB. The default SRAM size of AT32F413 is 32KB, which can be modified to 16KB or 64KB. How to modi...
Hello everyone! I would like to learn about the knowledge of software testing for commercial or household appliances: What is the difference between testing of appliance software and commonly known so...
The input of the switching power supply usually has a filter to reduce the ripple of the power supply fed back to the input. The input filter is generally composed of a capacitor and an inductor. Fig...[Details]
As we all know,
the
LED
industry has become the most watched industry so far. LED products have many advantages such as energy saving, power saving, high efficiency, fast response time, l...[Details]
Working principle:
First, the signal of the transmitter or instrument is modulated and transformed through semiconductor devices, then isolated and converted through optical or magnetic ind...[Details]
Rising fossil fuel prices and fears of global warming have increased interest in renewable energy sources and have also brought attention to supporting and demonstrating instrumentation. This design r...[Details]
The presence of the probe expands the scope of application of the oscilloscope, allowing it to test and analyze the electronic circuit under test online, as shown in the figure below: The role of ...[Details]
1. The smart home industry has a promising future Shortly after the beginning of 2014, the smart home industry had a bombshell news: on January 14, Beijing time, Google announced that it would a...[Details]
First, turn the multimeter to the test diode end, touch one of the transistor pins with the red probe of the multimeter, and use the other probe of the multimeter to test the remaining pins until t...[Details]
Senior security officials from the United States, Japan and South Korea will hold a trilateral meeting in Maryland on the 2nd. The White House said the three parties will discuss chip supply chain se...[Details]
Abstract: Aiming at the current problems of safety and energy waste in power chargers, a design method for a safe and energy-saving power controller that can be applied to mobile devices is propose...[Details]
More than 100 years ago, Karl Ferdinand Braun, a physics professor at the University of Strasbourg, invented the world's first cathode ray tube oscilloscope. Braun never imagined that his crude device...[Details]
On September 8, the signing ceremony of the MCU chip design project of Shanghai Shengsi Microelectronics Co., Ltd. (hereinafter referred to as "Shengsi Microelectronics") was held in Pukou Economic D...[Details]
1 Introduction
With the six major speed increases of railways across the country, the safety and reliability of vehicles operating at high speeds has become an issue of great concern. Safe ope...[Details]
There is a saying in the photovoltaic industry: 2018 is the first year of distributed photovoltaic power stations. This saying was confirmed at the distributed photovoltaic power generation technol...[Details]
There are many versions of the "small three electrics" of new energy vehicles. However, the most recognized version is the "small three electrics" consisting of the on-board charger OBC, the on-boa...[Details]
Switching Power Supply Study Group
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