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All You Need to Know about Ultrasonic Sensors
25 October 2025
The ultrasonic sensor is a sensor that converts ultrasonic signals into other energy signals. It consists of 4 parts: a transmitter, a receiver, a control part, and a power supply. For ultrasonic probes that can be made from different materials, we should learn about their performances before usage, which includes the working principle, working process, sensitivity, and directivity. Based on the properties of ultrasonic waves, ultrasonic sensors are widely used in communication, medical, and home appliance.
Image Sensor: How do CCD and CMOS Sensors work?
24 October 2025
An image sensor is a semiconductor device that can convert optical images into digital signals. It is widely used in digital cameras and other electronic optical devices. The image sensor uses the photoelectric conversion function of the photoelectric device to convert the light image on the photosensitive surface into an electrical signal in a proportional relationship with the light image. There are two kinds of image sensors which are CMOS and CCD. CCD and CMOS have their advantages in different application scenarios.
What is a Vibration Sensor?
24 October 2025
The vibration sensor is used to detect the impact force or acceleration of the sensor. It usually uses piezoelectric devices which will generate charge under a stress. The vibration sensor can be used for long-term monitoring of vibration and displacement, thermal expansion amount of rotor, and chassis.
Switching Diodes Basics: Working, Types and Circuit Analysis
24 October 2025
Switching Diodes are a type of semiconductor diode. They are specially designed and manufactured for "on" and "off" on a circuit. As the name suggests, it refers to a diode with a switching function.
Inductor Basics: Structure, Parameters, and Measurement
24 October 2025
Inductors are components that can convert electrical energy into magnetic energy and store it. An inductor generally consists of a skeleton, a winding, a magnetic core, an iron core, a shielding case, and a package. Commonly used inductors are adjustable inductors and choke inductors. In the circuit, the inductor prevents the AC and allows DC to pass through.
Introduction to Types of Motion Sensors
24 October 2025
Motion sensor refers to a device that detects the motion of an object or person, including gravity, linear acceleration, rotation vector, vibration frequency, etc. Motion sensors can be used to monitor device movements such as tilt, shake, rotation, or swing. Among them, the rotation vector sensor and the gravity sensor are the most commonly used sensors for motion detection and monitoring. Today we come to learn about various types of motion sensors, including accelerometers, tilt sensors, vibration sensors, PIR (passive infrared) sensors, and rotation sensors.
Introduction to Temperature Sensors
24 October 2025
The temperature sensor refers to a sensor that can sense the temperature and convert it into a usable output signal, which is the core part of the temperature measuring instrument. It's divided into 5 types and each type has unique working principles. Besides, some factors need to be noticed in the installation and using process. For the temperature sensor can accurately measure the ambient temperature, it's widely used in various fields and provide convenience for people's production and daily lives.
What are Proximity Sensors?
24 October 2025
The proximity sensor is a general term for a sensor that replaces contact detection methods such as limit switches. It aims to detect without contacting the detection object. It can detect the movement information and presence information of the object into electrical signals.
An Overview of Linear Integrated Circuits
23 October 2025
A linear integrated circuit is an integrated circuit based on an amplifier. The meaning of "linear" used to indicate that the response relationship of the amplifier to the input signal is usually linear.In this essay, we’ll first introduce the development history of linear integrated circuit. And then the production process and the high-frequency technology are discussed in detail. The following two parts mainly talk about the linear integrated circuit types and forms. And the final chapter analyzes the two typical bipolar linear integrated circuit一 Lm386 and 34063.
Types, Structure, and Packages of Integrated Circuits
23 October 2025
The type of integrated circuit can be divided according to its use, function, structure, manufacturing process, integration, and conductivity type. The structure of the integrated circuit can be learned from levels from top to bottom: system level - module level - register transfer level (RTL) - gate level - transistor level. The packaging forms of integrated circuits include SOP, PGA, BGA, DIP.
What are the Differences Between Pull up and Pull down Resistors?
22 October 2025
Pull up is to clamp an uncertain signal to a high level with a resistor, and the resistor also acts as a current limiter. In the same way, pull down means to clamp the uncertain signal to a low level through a resistor. To pull up is to input current to the device, and the pull-down is to output the current.
Analysis of Semiconductor Wafers
22 October 2025
The wafer is the basic raw material for manufacturing semiconductor devices. Various circuit element structures can be fabricated on silicon wafers, thereby becoming integrated circuit products with specific electrical functions.