The multimeter, also known as a multifunction meter, three-in-one meter, or universal meter, is a versatile and multi-range measuring instrument. Generally, a multimeter can measure direct current, direct voltage, alternating voltage, resistance, and audio levels. Some models can also measure alternating current, capacitance, inductance, and certain parameters of semiconductors (such as β). 1. Structure of … Read more
Editor’s Note: This article is primarily compiled from Keysight’s related content on probes. Oscilloscopes have expanded their application range due to the existence of probes, enabling online testing and analysis of the electronic circuits being measured, as shown in the figure below: Function of Oscilloscope Probes The selection and use of probes need to consider … Read more
The oscilloscope is one of the most versatile tools in the toolbox of electronic engineers and enthusiasts. It converts voltage signals into waveforms that change over time, allowing users to observe related information such as signal frequency, amplitude, and noise. Modern Oscilloscopes Almost all application electronics, electrical laboratories, or workbenches have an oscilloscope, and many … Read more
Click the blue text to follow Servo and Motion Control RS232 and RS485 are common interfaces in low-voltage electronics. Many friends have mentioned the differences between them, so today let’s explore them together. 1. Physical Structure of the Interface 1. RS232 Interface: RS-232 uses an unbalanced transmission method, known as single-ended communication. In contrast, RS485 … Read more
Introduction to RS-232 Serial Port Data transmission between computers or between a computer and a terminal typically employs two methods: serial communication and parallel communication. Serial communication is widely adopted due to its lower cost and fewer lines used, especially in remote transmission, which avoids inconsistencies caused by multiple lines. In serial communication, both parties … Read more
School of Electronic and Electrical Engineering Youth is colorful because of dreams. Our students’ training has reached the second day! Little Electric is back to bring you benefits! Usage of the Digital Oscilloscope Explanation of Training Content Click the video to check it out! Usage of the Digital Oscilloscope Usage of the Analog Oscilloscope Explanation … Read more
1. Write a program to implement the logic function “P1.4=P1.0∨(P1.1∧P1.2)∨P1.3” using bit manipulation instructions. MOV C,P1.1 ANL C,P1.2 ORL C,P1.0 ORL C,P1.3 MOV P1.3,C 2. Write a program that jumps to the LABLE storage unit if the contents of accumulator A meet the following conditions. Assume the unsigned number is stored in A. (1) A≥10; … Read more
Among various sensing technologies, the most commonly used and widespread method for detecting magnetic fields is the Hall effect method. Based on the Hall effect, many Hall effect sensors or transducers have been found in various applications, primarily used for sensing proximity, speed, current, and position. This is due to the ability to construct Hall … Read more
1. Working Principle of Sensors A sensor is a device that converts non-electrical quantities into electrical quantities. The non-electrical quantities sensed typically include pressure, temperature, displacement, concentration, speed, pH, etc. The output is usually an electrical quantity, such as voltage, current, or charge. These output signals are very weak and usually need to be amplified … Read more
Abstract in Chinese: A highly reliable power management circuit of digital signal processor (DSP) TMS320F28335 is designed. The power supply demands of the DSP were analyzed, and the required power was accounted. The 1.9 V and 3.3 V dual power supply management circuit meeting demands of power and power-on timing of the chip was designed. … Read more