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ST's EVL6564-50WFLB is a 50W PFC power supply with an input voltage of 90-265 VAC using the L6564. It is suitable for all low-power applications that require high PF, such as lighting, LED power suppl...[Details]
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Select IO mode in STM32
(1) Floating input_IN_FLOATING - floating input, can be used for KEY identification, RX1
(2) Pull-up input_IPU - IO internal pull-up resistor input
(3) Pull-down input_IPD -...[Details]
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introduction Since the digital signal processing ( DSP ) chip represented by TMS320 was launched by TI in the 1980s , it has provided different series and various varieties of products and has bee...[Details]
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The basic principle of the self-excited feedback switching power supply is shown in the figure. When the input voltage is applied, the current flows to the base of the switch tube VTl through Rg, m...[Details]
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The battery usually refers to the lead-acid battery, which is a type of battery and belongs to the secondary battery. Its working principle: when charging, it uses external electrical energy to regen...[Details]
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1. Overview: In recent years, with the rapid development of digital signal processing technology and the continuous emergence of new theories and algorithms, coupled with the overall improvement in...[Details]
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This design uses
a single-chip microcomputer
as the main control component, presets the output current value through the keyboard and uses a liquid crystal module for real-time display. T...[Details]
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Image source: Physicists' Organization website
The electroencephalogram (EEG) was invented a century ago and has had a profound impact on the way scientists study the hum...[Details]
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After studying for a while and having some experience, friends will definitely feel unsatisfied. It's always paper talk. What's the point of lighting an LED? Can we do something more practical? Okay,...[Details]
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According to Reuters, Brazilian Vice President Hamilton Mourao said that the Brazilian government will not rule out Huawei from operating 5G mobile communications networks in the country. As...[Details]
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origin
Industry development needs
In the second half of 2022, it can be considered that the problem of intelligent driving on highways and urban ...[Details]
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First, let’s look at the AD574 function table: Hardware circuit diagram: Program flow chart: c program: /**************************************************************************************...[Details]
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1 Introduction This article briefly sorts out the concepts related to ARM, including ARM architecture, ARM core, ARM CPU (or MCU) and ARM Soc. We embedded engineers who mainly use ARM platform deal...[Details]
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The most common ones are helium-neon lasers, argon ion lasers, carbon dioxide lasers, helium-cadmium lasers, and copper vapor lasers.
This is a type of laser that uses gas as the working mediu...[Details]
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Some time ago, three batteries suspected to be for the iPhone 12 series passed certification at the Korea Technology Laboratory (KTL). Their model numbers were A2471, A2431, and A2466. Later, another...[Details]