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First, there are two types of time under Linux, system time and hardware time (RTC chip):
1. System time is the time that can be directly seen by the running system;
2. Hardware time is t...[Details]
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Low-level hardware operation methods
Each interrupt line has a low-level hardware operation function set struct irq_chip. Most of the control methods are repeated. Basically, as long as there are int...[Details]
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The ioXt Alliance, the global standard for IoT security, announced that major technology companies and manufacturers including Google, T-Mobile, Silicon Labs, and others have certified a wide range o...[Details]
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STM8S has a powerful clock system, which provides a high-speed 16M RC oscillator and a low-speed 128K RC oscillator. The clock controller is powerful, flexible and easy to use. Its purpose is to en...[Details]
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In recent years, the LED field has seen advances such as high-brightness LEDs (HB-LEDs), which have been quickly applied to end markets such as automotive, building and street lighting. Moreover, wit...[Details]
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1 UPS monitoring software The design of monitoring software is mainly for computers (such as personal computers, servers, workstations or various large and medium-sized hosts) that require power pro...[Details]
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If the gain or noise bandwidth of a low-noise amplifier is known or estimated , the other specifications can be measured using only a few resistors and an AC voltmeter. This example uses the Johnson ...[Details]
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1) Test steps
(a) Plug in the power cord of the oscilloscope, turn on the power switch, and the power indicator light will light up. After the scan line appears, adjust the brightness to the ...[Details]
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●Fault analysis of air conditioner PG motor drive circuit
At present, some air conditioner fans are controlled by PG motors. The capacitor has a phase shift characteristic of 90° current lead....[Details]
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Before using an insulation resistance meter to measure insulation resistance, the following inspections should be done: (1) Check whether the power supply of the device under test has been cut off an...[Details]
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The system structure diagram is shown in Figure 1. Its hardware structure is relatively simple, mainly composed of three parts: single-chip microcomputer P89C51RD, RS-232/TTL interface circuit MAX2...[Details]
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Recently, with the assistance of the Brazilian certification team of TUV SUD, another photovoltaic company, Suzhou Omnik New Energy Technology Co., Ltd. (hereinafter referred to as "Omnik"), succes...[Details]
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Scroll compressor structure diagram
The scroll compressor is a positive displacement compressor, and the compression components are composed of a moving scroll and a stationary scroll. Its wor...[Details]
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Preface: With the emergence of generative end-side
big models
,
computing power
evolution and other technical backgrounds, the market opportunities and competitive landscape of the ...[Details]
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With the rapid development of science and technology, all walks of life are constantly carrying out technological transformation, updating equipment, and producing high-precision mass flow meters. Wh...[Details]