As the title says, I recently found that my core points have not changed. I replied to a few posts and was prompted to add one core point, but the point value in the upper right corner has not changed...
[align=left][font=微软雅黑]I wanted to buy a water purifier during the Double 11 period. I have been shopping for large household appliances on JD.com. I happened to find that JD.com had a promotion for a...
[i=s] This post was last edited by dontium on 2015-1-23 12:40 [/i] I would like to ask all the experts, if I want to detect the current of 4~20ma, what is the appropriate design? The internal resistan...
Is the instruction MRC p15,0,R1,c0,c0,0 used to read the ID number of the ARM CPU into the ARM register R1? If so, I have now embedded a .s file with the following assembly content in the EVC environm...
interrupt[PORT_vector]void PORT1(void){if(P1IFG&BIT0){Delay();if(P1IFG&BIT0){Execution body;P1IFG&=~BIT0;}}}Can this remove jitter? I feel that judging the interrupt flag in the interrupt program can ...
I use the internal DAC of the stm32L4 chip to generate a sine wave, and then use the timer's PWM to generate a square wave. However, I found through an oscilloscope that the two waveforms are not sync...
We know that microcontroller development tools generally include real-time online emulators and programmers. Among them, online emulators are very good tools, but they are also more expensive...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
Product series: PB-B-RS232/485 interface (hereinafter sometimes referred to as "interface") is a product in the PROFIBUS bus bridge series.
The main purpose of the bridge series ...[Details]
1 Introduction
PROFIBUS is an international, open, and manufacturer-independent fieldbus standard. It is widely used in manufacturing automation, process industry automation, and automatio...[Details]
The rectified DC voltage is then converted back to AC using power electronics such as insulated gate bipolar transistors.
The output voltage is switched on and off at a high frequency, control...[Details]
0 Introduction
Under normal circumstances, the three-phase power in the power system is symmetrical, and they meet certain amplitude and phase conditions; but when the load changes, the syst...[Details]
1 Introduction to LED
With the development of science and technology, people have higher and higher requirements on automobile light sources. LED (Light Emitting Diode) has gradually attracted...[Details]
1 Load Regulation
Changes in power supply load will cause changes in power supply output. When the load increases, the output decreases, and vice versa, when the load decreases, the output inc...[Details]
Designing low power circuits while achieving acceptable performance is a difficult task. Doing so in
the RF
bands increases the challenge dramatically. Today, nearly everything has wireless...[Details]
introduction
Sudan's Muglad Oilfield is a large oilfield jointly invested, developed and constructed by a four-party consortium of China, Malaysia, Canada and Sudan. It consists of 8 satellite...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
Traditionally, when using PLC to control stepper motors, a dedicated stepper motor control intelligent module is usually added to the PLC, and then connected to the drive power supply to realize th...[Details]
In recent years, the application of single-chip microcomputer systems in the field of industrial measurement and control has become more and more extensive. However, for industrial sites with harsh...[Details]
The rotor of the brushless DC motor used in electric bicycles is composed of 30 to 40 pieces of NdFeB magnets. Since the surface magnetic field strength of NdFeB magnets exceeds 500mT, the position se...[Details]
The circuit has overcharge protection, over-discharge protection, over-current protection and short-circuit protection functions. Its working principle is analyzed as follows:
1 Normal state
...[Details]
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