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I recently used USB and later found that STM32F103 can implement DFU programmatically. I searched the code online and compared it with the official document and found that it was DFU for large-capaci...[Details]
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Abstract: This article mainly introduces the measurement principle, specifications and main technical parameters of 722 spectrophotometer and the composition of 722 visible spectrophotometer. Final...[Details]
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Preface
In the current frequency conversion device test scheme, the control of the local oscillator signal source by the measurement system is a very difficult problem (except for the fixed local os...[Details]
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Today I will tell you about the serial communication of this board. Here we don't need to look at the board, as long as we know how to use the serial port of the 51 chip. Let's go directly to the c...[Details]
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void Time3_Init(void) // 1ms interrupt timer initialization { RCC- APB1ENR |= RCC_APB1ENR_TIM3EN; // Turn on the clock of the corresponding peripheral NVIC- ISER |= (1 TIM3_IRQn); NVIC- IP |= ...[Details]
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1 Introduction
Many people choose electric vehicles as a means of transportation because they are light, convenient, and environmentally friendly. However, some shortcomings of electric vehicles hav...[Details]
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The output voltage of the switching power supply will decrease when the load is short-circuited. Similarly, the output voltage will increase when the load is open or unloaded. In maintenance, the dum...[Details]
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The market penetration rate of non-signaling test solutions is rising rapidly. In order to achieve global roaming, China Mobile plans to launch a 5-mode 13-band smartphone by the end of 2013, which is...[Details]
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Overload operation of a transformer means that the capacity transmitted by the transformer during operation exceeds the rated capacity of the transformer. The rated capacity of a three-phase tran...[Details]
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At present, the driving current of many power LEDs reaches 70 mA, 100 mA or even 1 A, which will cause heat accumulation inside the chip, leading to a series of problems such as wavelength drift, redu...[Details]
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What is the meaning, instruction format and function of direct addressing?
Answer: In direct addressing mode, the instruction operand field gives the operand address participating in the operation....[Details]
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In layman's terms, an electric motor is a mechanical device that can move when powered. Therefore, its most fundamental basis is the Ampere force, that is, a current-carrying wire will be acted upo...[Details]
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1. Use the resistance measurement method to determine the electrodes of the junction field effect transistor According to the phenomenon that the forward and reverse resistance values of the pn jun...[Details]
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1. Composition of vehicle circuit
The complete vehicle circuit of a car usually consists of a power supply circuit, a starting circuit, an ignition circuit, a lighting and light signal device ...[Details]
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The National Energy Administration held a press conference to release the energy situation and renewable energy grid-connected operation status in the first three quarters, interpret the "Guidi...[Details]
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