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1. No display on the electromagnetic flowmeter 1. Check whether the power is on; 2. Check whether the power fuse is intact; 3. Check whether the power supply voltage meets the requirements. 2. El...[Details]
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A reference current source is a high-precision, low-temperature-coefficient current source used as a current reference for other circuits in analog integrated circuits . As a key circuit unit of ...[Details]
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1-7． Flyback transformer switching power supply
The working principle of the flyback transformer switching power supply is relatively simple and the output voltage control range is relativ...[Details]
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With the widespread application of LEDs, LED heat dissipation issues have received more and more attention. The heat dissipation performance of LEDs will directly affect the life of LED products. ...[Details]
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On September 15, the grace period expired and Huawei's supply chain was officially cut off. On May 15 and August 17 of this year, the United States imposed the second and third rounds of sanctions on...[Details]
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1.Bad Magic Number
## Booting image at 33000000 ...
Bad Magic Number
OMAP5912 OSK # (After tftp downloads the kernel uImage, it stops here and cannot start the kernel)
Cause of the probl...[Details]
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This article introduces a flyback constant voltage, constant current 75W LED driver with single-stage (single switch) PFC . The circuit is shown in the figure. The AC input voltage range is 208~277...[Details]
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;*************************************************** ;* Delay controller made of single-chip microcomputer 89C2051 * ;* T0 and TT0 are combined to form a second pulse generator * ;* TSBIN is a second...[Details]
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my country is a country with relatively abundant coal resources. In 2018, coal production reached 3.68 billion tons, ranking first in the world. Coal imports reached 280 million tons, also ranking ...[Details]
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Vishay Intertechnology Launches FRED Pt® Fifth Generation 600 V Hyperfast Recovery Rectifier with Industry-leading Reverse Recovery Performance
12 A and 15 A devices are ...[Details]
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IoT is everywhere and is one of the greatest things that can be used to make life easier. There are many IoT based home automation projects available on the internet but none of them gives you the ...[Details]
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M12 is a connector commonly used in the field of communication and has a variety of core numbers (number of leads) to choose from. The 8-core structure of the M12 connector is usually used to trans...[Details]
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The simplest way to decrypt a microcontroller is to erase the encryption lock bit in the microcontroller. Due to the unreasonable timing design of the erase operation of the AT89C series microcon...[Details]
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In 2019, the overall server market growth momentum slowed down due to factors such as the global trade situation and the transfer of foundry production lines. However, since the second half of the ye...[Details]
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In the past two years, the competition in the projection industry has intensified. From technological innovation to marketing strategies, the competition among major projection companies has never ...[Details]
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