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● Case analysis of E1 high voltage protection for fixed frequency cabinet
A user in a certain area reported a 72-volt fixed frequency (R32 refrigerant) cabinet unit that displayed E1 high volt...[Details]
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1 Introduction The power supply is the heart of all electronic devices, and its quality directly affects the reliability of electronic devices. Currently, various high-efficiency portable electro...[Details]
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On January 23, 2020, at the Buffett lunch, he was asked what he thought of Tesla. Buffett said: "Musk is a great man and Tesla is a great company, but he is not an ideal investment target." ...[Details]
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I crawled the Internet for a long time before I found a forum that introduced USBMEM_BOOTLOADER with source code. After compiling it with KEIL, it couldn't run. Later I found the root cause of the pr...[Details]
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Source: China IC Technology Market In military fields such as radar and navigation, due to the wide signal bandwidth (sometimes may be higher than 10MHz), the sampling rate of the ADC is required to b...[Details]
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In the critical year of the conclusion of the 13th Five-Year Plan and the decisive victory in building a moderately prosperous society in all respects, facing the challenges of my country's economi...[Details]
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As electric vehicles (EVs) become more popular, one of the challenges facing automakers is how to make vehicles more affordable while reflecting real-world driving range. First, this means reducing...[Details]
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Shenzhen - Western Digital Corporation (NASDAQ: WDC) today announced a series of new products designed to meet the growing demand for high-endurance storage solutions - especially for industrial, int...[Details]
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AEC-Q200 compliant and suitable for DC power line applications The SRF7035A series is compact and thin to meet board space constraints and provide EMI suppression and noise filtering in high voltag...[Details]
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#include "IIC.h" #include "systick.h" //IIC communication in high-speed mode /* SCL initialization, because SCL has always been in output mode, */ void IIC_init(void) { RCC- AHB1ENR |= (1 1); GPIOB- ...[Details]
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PIC 8-bit microcontrollers have the advantages of fewer instructions and faster execution speed. The main reason is that the PIC series microcontrollers are different from other microcontrollers in s...[Details]
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Independent buttons First of all, since it is to detect the input, of course, a pull-up resistor must be used to detect changes in the pin level. In the 51 microcontroller, in addition to the P0 port...[Details]
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CMX638 is a voice codec chip specially used in communication systems. This paper explains the basic structure and functions of CMX638, and gives the peripheral circuit design of the voice system ba...[Details]
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Circuit for converting single power supply to dual power supply
Figure 1-39 is a circuit that uses the TDA2030 high-efficiency operational amplifier circuit and uses its complementary...[Details]
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The closed-loop servo control system is an automatic control system with high precision, high response speed and high stability, which is widely used in industrial automation, robotics, aerospace, ...[Details]