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Understanding of Carbon Film Resistors
17 October 2025
A carbon film resistor is a type of film resistor, which is also called thermal decomposition carbon film resistor. It’s a thin-film resistor in which the carbon that is thermally decomposed from a hydrocarbon at high temperatures is deposited on a substrate. It adopts high-temperature vacuum coating technology to tightly attach carbon to the surface of a porcelain rod to form a carbon film, and coats the surface with an epoxy resin to protect the film. Its surface is often coated with green protective paint. The thickness of the carbon film determines the resistance value. And usually, the thickness of the film and the groove are used to control the resistor. Besides, it has a low price, stable performance, a wide range of resistance and power.
Basic Introduction to the Types of Capacitors
16 October 2025
A variety of capacitors are used in the manufacture of electronic devices, and they play different roles in the circuit. There are many types of capacitors, such as fixed capacitors, variable capacitors, and trimmer capacitors, and fixed capacitors can be divided into ceramics, mica, paper, film, and electrolytic capacitors according to the different dielectric.
How to read Resistors Color Code?
16 October 2025
We can read the resistance value according to the resistors color code because of the use of four color bands or five color bands or six color bands on the resistors to indicate the resistance value. The color information representing the resistance value can be read at once from any angle.
Photoresistor Basics: Types, Principles and Applications
16 October 2025
The article introduces the photoresistor’s main characteristics and principles including the working principle and structural principle. There are three types of photoresistor: ultraviolet photoresistors, infrared photoresistors, visible light photoresistors. Dimming circuit and light switch are the two applications of the photoresistor.
A Guide to AVR Microcontroller [PDF]
15 October 2025
AVR microcontroller is an enhanced RISC (Reduced Instruction Set CPU) high-speed 8-bit microcontroller with built-in Flash developed by ATMEL in 1997.
The Introduction to QFN Package
15 October 2025
Hello everyone, I am Rose. Today I will introduce QFN Package to you. QFN (Quad Flat No-leads Package), one of the surface-mount packages.QFN package does not have any extension pins at all.
Neural Processing Unit (NPU) Explained
15 October 2025
Neural Network Processing Unit (NPU) adopts a “data-driven parallel computing” architecture, which is particularly good at processing large-scale multimedia data such as video and images. This paper analyzes the working principle, architectural features, differences with CPU/GPU, and application scenarios of NPU in modern smart devices.
What is Inertial Measurement Unit (IMU)?
15 October 2025
An inertial measurement unit (IMU) is a device that measures three-dimensional linear and angular motion without an external reference, i.e., a device that measures the three-axis attitude angle (or angular rate) and acceleration of an object.
The Difference and Application of SPI, UART, I2C Communication
15 October 2025
Hello everyone, I am Rose. Welcome to the new post today. Communication between electronic devices is like communication between humans. Both parties need to speak the same language. In electronic products, these languages are called communication protocols. This article will make some comparisons between SPI, UART, and I2C.
How to Design an Accurate DC Power Supply
15 October 2025
Hello everyone, I am Rose. In this article, you will learn how different components affect system accuracy and how to select suitable components for the design of precision DC power supplies.
What is CPLD (Complex Programmable Logic Device)?
15 October 2025
CPLD uses CMOS EPROM, EEPROM, flash memory, and SRAM programming technology, thus constituting a programmable logic device with high density, high speed, and low power consumption. They are relatively large in scale and complex in structure and belong to the range of large-scale integrated circuits.
Lattice FPGA: The Ultimate Guide to Low-Power, Small Form Factor Solutions
19 September 2025
Comprehensive review of Lattice FPGAs. Discover why their low-power, small-size, and cost-effective solutions are dominating the edge AI, IoT, and automotive markets. Compare Lattice vs. Xilinx and Intel to make the right choice.