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An investor asked on the investor interaction platform: The gross profit margin of Tongxingda's products is about 10%. Can it be improved? In addition, can the display modules produced by Tongxingda ...[Details]
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1. Brake light: The Hall switch can detect the position of the brake pedal, thereby triggering the lighting of the brake light.
2. Turn signal: The Hall switch can detect the position of the s...[Details]
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Basic concepts:
(According to China's metrology law, physical quantity units adopt the International System of Units, i.e. SI. For ease of understanding, here are some common quantity convers...[Details]
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Equipment designers have been asking for SMPS with smaller packages. Smaller EMI filters can not only effectively reduce the level of electromagnetic emissions before they reach the main line, but ...[Details]
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1.2.4 Low-pass filter
The low-pass filter is used to pass low-frequency signals and suppress or attenuate high-frequency signals. A first-order low-pass filter is used in this product. The circ...[Details]
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Abstract: This paper introduces a pulse width modulation integrated circuit UPC1099. Its internal structure and pin arrangement are discussed in detail, and its parameter limitations and applicatio...[Details]
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When measuring AC voltage, the range selection switch of the multimeter should be turned to the appropriate range in the "acv" or " " range, that is, to the range higher than the voltage being measur...[Details]
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iPhone XS and later (overseas) models have a combination of a physical SIM card and a digital eSIM, which enables a feature called Dual SIM Dual Standby. This means that users can have two numbers on...[Details]
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This article introduces the five main factors that affect resistance or resistivity testing, including: ambient temperature and humidity, test voltage (electric field strength), test time, leakage of ...[Details]
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Apple just launched new news and music services at its spring conference last month, but it is suspected of violating antitrust laws in Europe and is currently under investigation. According to a r...[Details]
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0 Introduction
In large power plants, the required DC load is relatively large, and the capacity of the battery is usually above 2000A·h. If a conventional 10A or 20A switching rectifier modul...[Details]
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/* TIM2 initialization function Return value: None Parameter: timing time us */ #define CPU_CLK 16027 //Main frequency KHz void timer2_Init(head us) { uchar PSCR = 0; // frequency division ...[Details]
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Microchip Expands Radiation-Tolerant MCU Line
with SAMD21RT, Arm® Cortex®-M0+-Based 32-Bit MCU for Aerospace and Defense Markets
The SAMD21RT is available in 64-pin ceramic and...[Details]
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It can be downloaded using Keil's compilation environment, but the entry address is shown in the yellow line below. If single-step execution (F11) or full-speed run (F5) is performed, the program alw...[Details]
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In most processors after ARM V4 and V4T, the interrupt vector table can have two locations: one is 0 and the other is 0xffff0000. This can be controlled by the V bit (bit ) in the CP15 coprocessor ...[Details]
DSP and ARM Processors
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