What is a knock sensor on a car engine for?
The combustion of the engine is very complicated, so it needs to have a very precise design and control. A little control error or abnormality will cause abnormal combustion, and "knock" is a kind of...
15 April 2022
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Cecelia Qiu
Some differences between capacitive and thermal MEMS sensors
Design engineers often need to choose among different kinds of accelerometers when developing heavy equipment. For example, in heavy machinery such as cranes, tractors, woodcutters, and construction p...
06 April 2022
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Cecelia Qiu
Application of Hall Sensor Ranging and Selection of Magnet
We want to use the Hall sensor to measure micro-distance, and it is inevitable to involve the problem of Hall sensing distance. Some may require a relatively short sensing distance, such as 30 mm, but...
17 March 2022
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Cecelia Qiu
Thyristor selection skills
1. Choose the type of thyristor
There are many types of thyristor, which should be selected reasonably according to the specific requirements of the application circuit.
If it is used for AC and DC...
03 March 2022
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Cecelia Qiu
An introduction to temperature sensor
Temperature is a basic physical quantity, and all processes in nature are closely related to temperature. The temperature sensor is the earliest developed and most widely used type of sensor. Accordin...
28 February 2022
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Cecelia Qiu
What is A/D conversion and D/A conversion?
1. What is a/d, d/a conversion:
With the rapid development and popularization of digital technology, especially information technology, in the fields of modern control, communication, and detection,...
25 February 2022
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Cecelia Qiu
Class D audio amplifiers have advantages
Designers often choose Class-D audio amplifiers to drive speakers in a variety of medium-power applications such as televisions (TVs), Bluetooth® speakers, and notebook computers. After all, class...
22 February 2022
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Cecelia Qiu
How to choose a signal generator and adjust the sensitivity of the signal generator?
1. Application of signal generator in sensitivity
The sensitivity of the radio and the walkie-talkie can be adjusted by the signal generator. The basic principle of adjustment is to minimize the atte...
11 February 2022
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Cecelia Qiu
What is a fiber optic adapter？
What is a fiber optic adapter?
Fiber optic adapters (also known as flanges), also known as fiber optic connectors, are the centering and connecting components of fiber optic active connectors. Optica...
25 January 2022
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Cecelia Qiu
An overview of electromagnetic relay
Selection of Electromagnetic Relays
Understand the necessary conditions
① The power supply voltage of the control circuit, the maximum current that can be provided;
②The voltage and current in the...
21 January 2022
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Cecelia Qiu
Precautions for relay application
1 coil voltage
The voltage used by the coil should be selected according to the rated voltage in the design. If not, it can be selected with reference to the temperature rise curve. Using any coil vo...
17 January 2022
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Cecelia Qiu
The principle and function of air pressure sensor
The air pressure sensor detects the absolute pressure of the intake manifold behind the throttle valve. It detects the change of the absolute pressure in the manifold according to the engine speed and...
12 January 2022
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Cecelia Qiu
Precautions for using hydrogen thyratron
Hydrogen Thyratron is a hot cathode low pressure gas (hydrogen or deuterium) discharge device. It has the advantages of high working voltage, large pulse current, rapid and stable ignition, low trigge...
10 January 2022
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Cecelia Qiu
How to choose a fixed resistor？
There are many types of fixed resistors, and the choice of which material and structure of the resistor should be based on the specific requirements of the application circuit. Ordinary wirewound resi...
07 January 2022
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Cecelia Qiu
An Introdcution to the Voltage-Controlled Oscillator
Refers to an oscillator circuit (VCO) whose output frequency and input control voltage have a corresponding relationship. The frequency is an oscillator VCO whose frequency is a function of the input...
04 January 2022
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Cecelia Qiu
What is a resistor? What should be paid attention to when selecting resistors?
Regarding resistors, especially thin-film chip resistors are very commonly used in various fields. For beginners, the selection of resistors is nothing more than choosing the size of the resistance an...
31 December 2021
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Cecelia Qiu
Five common sensors for LED smart lighting
As one of the equipment of signal acquisition and electromechanical conversion, the electromechanical technology of sensing technology has been quite mature. In recent years, it has entered the develo...
29 December 2021
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Cecelia Qiu
The classification of the demo board
The demo board is a circuit board used for embedded system development. Simply put, it is a circuit board that integrates a variety of electronic components. These electronic components include CPU, m...
22 December 2021
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Cecelia Qiu
How to choose a thermal relay?
Thermal relay is a traditional electrical appliance for protecting motors. It is used for overload protection of motors or other electrical equipment and electrical circuits. It has the same inverse t...
18 December 2021
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Cecelia Qiu
How to choose a sensor?
Sensors are the primary link to realize automatic detection and automatic control. Its existence and development give objects the sense of touch, taste and smell, and make objects slowly become alive....
15 December 2021
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Cecelia Qiu
