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The RS232 standard was born before RS485, but RS232 has several shortcomings: The signal level of the interface is relatively high, reaching more than ten V. Improper use may easily damage the inter...[Details]
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Circuit
is as shown in the figure. Usually
the driver
tube needs to use a transistor with a higher voltage resistance (
the driver
tube in the figure is 9013). When the output...[Details]
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Excitation of the vibrating wire sensor by the acquisition instrument: also called "excitation", is a necessary process for obtaining frequency data of the vibrating wire sensor. Only when the sensor...[Details]
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Since the traditional laser rangefinder performance test must be carried out outdoors to detect the target and is restricted by weather conditions, the technical survey and daily maintenance are gr...[Details]
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According to news on November 27, Taiwan's "Economic Daily" reported today that TSMC will resume price concessions for some mature processes next year after three years, with a price concession range...[Details]
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With the upgrading of automobile consumption in my country and the increasingly fierce market competition, people's attention to automobiles has shifted from simple appearance and interior to perfo...[Details]
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In the development of modern instruments, human-computer interaction functions are playing an irreplaceable role. Instruments with friendly human-computer interaction interfaces will be easier to ...[Details]
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Recently, the first set of charging and discharging units of the Rudong 100MWh gravity energy storage project invested and constructed by China Tianying Co., Ltd. was successfully tested. It will play...[Details]
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This article introduces the main features, block diagram, and typical application circuit of the MAX5977A/MAX5977B. The MAX5977A/MAX5977B is a 1V-16V single-supply hot-swap controller that can provide...[Details]
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#include
#include
#define uchar unsigned char
#define uint unsigned int
__flash uchar seg ={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, //segment code
0x7f,0x6f};
__flash uchar tab ={0xfe,0xfd...[Details]
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Precautions for using a multimeter (1) Before using the multimeter, you should first perform "mechanical zero adjustment", that is, when there is no electrical quantity to be measured, make the mu...[Details]
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introduction
In the past, the smart car competition was divided into the photoelectric group, the camera group and the electromagnetic group. In this competition, the photoelectric group tried to m...[Details]
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The pressure gauge calibrator is also called a pressure gauge calibrator or a pressure gauge calibration pump. The principle of the pressure gauge calibrator is that the piston rod movement pressure ...[Details]
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Radar level meters are widely used in the level measurement of high-temperature, high-pressure, flammable, explosive, and condensable media. This is inseparable from the advantages of radar level met...[Details]
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The circuit explained here is basically a warning signal generator designed mainly for automotive applications. It triggers a warning signal when the turn indicator switch is not returned to the ne...[Details]
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