1.1 Example (1) A T9-7.5KW inverter jumped "FL" as soon as it started. Analysis and maintenance: No signs of burnout were found when the cover was opened. The online measurement of the IPM module (FP4...
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As the title says, one power supply powers two dsp chips. When they are working, both chips show that the voltage is normal, but the program just doesn't run. When I click run, it shows running, but a...
The STM32MP157A MPU is equipped with two Cortex-A7s in a symmetric multi-processing (SMP) architecture as the main application processors and a heterogeneous Cortex-M4 coprocessor. This configuration ...
[table=95%][tr][td]I recently designed a power amplifier using LM12CLK chip, and found that if I remove the ceramic capacitor C23 (180pf), it will definitely self-excite (no-load), and if I add C23 (1...
Recently, I have a project that requires the use of code to establish a dial-up connection. I have used the Ras function RasSetEntryProperties to establish the dial-up connection, but it seems that I ...
To differentiate their products in a crowded and competitive market, manufacturers of handheld devices often consider battery life and power management as key selling points for cell phones, PDAs, ...[Details]
July 11, 2012, Beijing - Altera Corporation (NASDAQ: ALTR) today announced the launch of 40-Gbps Ethernet (40GbE) and 100-Gbps Ethernet (100GbE) intellectual property (IP) core products. These core...[Details]
This paper establishes a fuel cell engine test platform based on the NI integrated hardware and software environment. This platform can realize the test and control of fuel cell engines and their a...[Details]
The automotive lighting and signal control system is responsible for controlling the vehicle's lighting, signal lights, electric horns, reversing and brake buzzers. Traditional automotive lighting...[Details]
The typical fault troubleshooting listed below is for reference of maintenance personnel.
When the computer is turned on, the indicator light is off and there is no screen display
Mainte...[Details]
In the single-chip microcomputer system, in addition to display devices, sound devices are often used, and the most common sound device is the buzzer. Buzzers are generally used for some low-demand...[Details]
1. Tips for charging UPS for the first time
After purchasing a new UPS, plug the UPS into the 220V mains power grid and charge it for at least 12 hours to ensure that the battery is fully char...[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]
In some motion control systems with simple control or low cost requirements, stepper motors are often used as actuators. The biggest advantage of stepper motors in such applications is that they ca...[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]
The 8051 microcontroller is the most common microcontroller we have. I have been using 8051 for a long time and have also taught microcontroller courses for a period of time. Here I would like to s...[Details]
When designing a PLC system, the control scheme should be determined first, and the next step is to select the PLC engineering design. The characteristics of the process and the application require...[Details]
1 Introduction
The ball nut is the internal thread element of the ball screw pair. Its precision directly affects the transmission quality of the ball screw pair. Due to its advantages such as...[Details]
Automotive electronic products are trending towards an increasing trend, and electronic technology plays a very important role in solving the economy, safety, comfort and other aspects of automobil...[Details]
1. Introduction
Automobile pollution is one of the most important issues that people are most concerned about and need to be solved urgently. As an important method for detecting automobile ex...[Details]