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What is a Cell Phone Antenna?21 July 2021
Cell phone antennas are devices that receive signals on cell phones. Old cell phones have protruding antennas, and most new cell phones have been hidden in the fuselage.
Basic Introduction to Filter Capacitor05 December 2020
The filter capacitor refers to an energy storage device installed at both ends of the rectifier circuit to reduce the ripple coefficient of AC pulsation and improve the efficient and smooth DC output.
What is a Variable Resistor?10 June 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.
Introduction to FinFET18 March 2021
The full name of FinFET is Fin Field-Effect Transistor. It is a new complementary metal oxide semiconductor transistor. The FinFET name is based on the similarity between the shape of the transistor and the fin.
Sensor Basics: Classification, Working Principle and Application02 April 2025
A sensor is a detection device that can sense the measured data and convert it into electrical signals or other required forms of information output according to particular rules, in order to meet the requirements of data transmission, processing, storage, and display, as well as recording and control. Sensors are frequently categorized based on their functioning principle, input data, and application scope. They may be loosely split into three types based on their diverse functioning principles: physical type, chemical type, and biological type.
Beginners Guide to Precision Resistors10 April 2025
Precision resistors refer to resistors whose resistance value tolerance, thermal stability (temperature coefficient), and distributed parameters(distributed capacitance and distributed inductance) all meet certain standards.
Voltage Follower: Purpose, Working, and Circuits27 March 2025
An op-amp circuit is a voltage follower (also called a unity-gain amplifier, a buffer amplifier, and an isolation amplifier). This suggests that the op-amp would not supply the signal with any enhancement. This article addresses the voltage follower description.
Surge Protection Devices (SPD): The Complete 2025 Guide25 December 2025
A surge protection device (SPD), also called a surge protector, is an electronic device that provides safety protection for various electronic equipment, instruments, and communication lines. When a spike current or voltage is suddenly generated in the electrical circuit or communication circuit due to external interference, the surge protection device can conduct and shunt in a very short time, so as to prevent the surge from damaging other equipment in the circuit.
Solenoid Switch: Working Principle, Types and Applications03 February 2021
A solenoid switch is an electrical switch that is often used where a high current circuit, namely a starter motor circuit, is brought into operation with the aid of a low current switch. This switch switches a durable switch on to connect the vehicle's battery to the starter of the motor. A solenoid switch attaches the drive pinion to the starter until the ignition key is triggered. High performance, reliability, and longevity are the key characteristics of solenoid switches.
What is a Water Level Indicator?19 February 2021
A water level indicator is a system that relays information back to a control panel to indicate whether there is a high or low water level in a body of water. A combination of probe sensors or float switches to sense water levels is used for some water level indicators.
Will HBM replace DDR and become Computer Memory?09 September 2021
The characteristics of high bandwidth and high latency determine that HBM is very suitable for GPU memory. But for personal computers, the tasks to be processed by the CPU are extremely unpredictable, require various random storage accesses, and are inherently more sensitive to latency. So in the short term, it is difficult for HBM to replace DDR on PCs.
The Introduction to USB Type-C Pin Signal and PCB Layout03 December 2021
Hello everyone. Welcome to the new post today. USB Type-C is a smaller-volume USB interface standard than Type-A and Type-B. It can be used on a PC (master device) as well as external devices (slave devices, such as mobile phones).