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1. Specific parameters:
When using a light emitting diode (LED), a resistor must be connected in series to limit the current: R = (E - U) / I
Note: E: power supply voltage, usually 5 V
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Recently, "Consumer Reports", the authoritative magazine of the American Consumer Federation, updated its evaluation report on the current mainstream active driving assistance systems in the North Am...[Details]
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Humanity is entering the low-carbon trend
Solar water heating system uses solar energy to help buildings achieve low carbonization
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NE567 tone decoder contains a phase-locked loop and can be widely used in various circuits such as BB machines and frequency monitors.
Tone Decoder
This article discusses the phase-locke...[Details]
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This is the first time I use a system other than Windows - the RT system. The RT system has no interface, only displays the CPU performance (generally it does not need to be connected to a monitor).
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1. The inverter external button relay controls the forward circuit
2. The inverter is connected to the industrial frequency power supply (button SB2 starts)
3. Motor forward s...[Details]
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Digital microphones require a clock signal from the host device. The clock sets the timing of the binary data output of the microphone. The allowed clock frequencies are specified in the chip's dat...[Details]
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In most DC-DC converters, the normal supply currents do not allow high efficiency at low load currents. The circuit in Figure 1, however, contains micropower components that enable it to maintain 90% ...[Details]
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TENG Fang-hua, ZHANG Zhong-chao
Abstract:A 90 W low stand-by loss AC/DC converter with universal input voltage is introduced.The converter consists of two-stages approach: a front-end PFC pre-r...[Details]
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1 Introduction The rapidly developing digital signal processor has been widely used in data acquisition, communication and multimedia. This system uses TI's 16-bit fixed-point high-speed chi...[Details]
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Bank security system fully upgraded
Financial reform is the highlight of the decision of the Third Plenary Session of the 18th CPC Central Committee. Now the plan and action of financial re...[Details]
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According to foreign media reports, an international team of scientists has discovered a material that can make lithium-ion batteries have more energy without sacrificing battery life. The team found...[Details]
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According to foreign media reports, Zeng Yuqun, chairman of CATL, said that the company plans to produce power batteries that can operate sustainably for 16 years and enable electric vehicles to trav...[Details]
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1. Basic knowledge:
"Speaker" and "buzzer" are not the same thing!
The speaker is a passive device that can emit sounds of various frequencies (within a certain range)...
The buzzer is an active ...[Details]
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PC: CentOS5.4
Kernel: Linux 3.0.1
Development board: ok6410
Cross compiler: arm-linux-gcc 4.4.1
1. Make menuconfig to remove the original touch screen driver
- Device D...[Details]
FPGA/CPLD
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