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What is a Variable Resistor?
16 March 2026
With a variable resistor, you can readily adjust the resistance, and therefore the current, of a circuit for functions such as dimming lights, controlling the speed of a motor, or adjusting a signal generator. This article will explain the symbols, construction and types of variable resistors and how potentiometers (three-terminal variable resistors) can be used as adjustable voltage dividers.
13 kinds of sensors in mobile phones and what are recorded by the sensors
14 March 2026
The sensor in a phone refers to the components of the phone that can be felt by the chip, such as distance, light, temperature, brightness, and pressure. These sensors are getting smaller and smaller, their performance is increasing stronger, and their cost is getting lower and lower, just like all electronic components.
Analysis of Resistors in Series and Parallel
14 March 2026
Several resistors are connected at a time to form a circuit without branches in the middle, which is called a resistor in a series circuit. And a circuit that connects two or more resistors between two points in a circuit with the same voltage at both ends of the resistor is called a resistor in a parallel circuit. The following mainly focus on the circuits, calculation methods, fault characteristics and fault treatment of resistors in series and parallel. And the final part introduces a concept-- ESR, which is related to series resistors and capacitors
What is a Motherboard Chipset? A Guide to 2026 Architecture
13 March 2026
The chipset is a set of integrated circuit "chips" and is sold as a product. It is responsible for connecting the core microprocessor of the computer and other parts of the machine.
In-Depth Analysis of Q1 2026 Memory Chip Market & Stocking Guide
13 March 2026
2026 Q1 memory market analysis: DRAM and NAND Flash prices are surging due to HBM capacity constraints at Samsung and SK Hynix, with some server memory prices up over 60%. Utmel provides the latest market insights and procurement advice for DDR4, DDR5, and enterprise SSDs.
What is Universal Serial Bus (USB)?
19 January 2026
Universal Serial Bus (USB) is a serial bus standard and a technical specification for input and output interfaces. It is widely used in information communication devices. The latest generation is USB4, and its transmission speed is 40Gbit/s, the three-stage voltage is 5V/12V/20V, the maximum power supply is 100W.
LDR/Light Dependent Resistor: Working Principle, Types and Applications
19 January 2026
In general, the control of lights and home appliances is manually operated and maintained on a number of occasions. However, due to the carelessness of human beings or unusual conditions, the process of controlling appliances may cause power wastage. We can use the light-dependent resistor circuit to control loads based on the intensity of light to overcome this problem. A device made of high-resistance semiconductor material is an LDR or a photoresistor. This article provides an overview of LDR, the light-dependent resistor circuit and its operation.
What are Wire Wound Resistors?
19 January 2026
Wire wound resistors are a type of fixed resistors. Wire-wound resistors are constructed with resistance wires wound on an insulating frame. The resistance wire is generally made of nickel-chromium, manganese-copper alloys with a certain resistivity.
What is Chip: Definition, Classification and Design Process
17 January 2026
Hi fellas. I am Rose. Today I will introduce the process of designing chips for you. Chips, also known as integrated circuits or VLSIs, are electronic circuits made up of thousands, millions, or even billions of transistors, resistors, and capacitors.
What are the Applications of Filters?
17 January 2026
Filtering is a basic and important technique in signal processing. Using filtering techniques, the desired signal can be extracted from various signals and unwanted interference signals can be filtered out. A filter is an important component in the frequency domain analysis of a signal.
What is the Difference between an Integrated Circuit and a Chip
16 January 2026
Hello everyone, I am Rose. Welcome to the new post today. Today I will introduce the difference between integrated circuit and chip to you.
The Comprehensive Guide to MOSFETs: Principles, Types, and Parameters (2026 Edition)
16 January 2026
Hello everyone, I am Rose. Today I will introduce MOSFET to you. Metal-Oxide Semiconductor Field Effect Transistor (MOSFET) is a field effect transistor that can be widely used in analog circuits and digital circuits