Cecelia Qiu
Joined: 1 month ago
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...
Cecelia Qiu in Electronics 21 January · 2
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 curv...
Cecelia Qiu in Accessories 17 January · 2
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...
Cecelia Qiu in Electronics 12 January · 4
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...
Cecelia Qiu in Electronics 10 January · 2
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. Ord...
Cecelia Qiu in Electronics 07 January · 14
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 fu...
Cecelia Qiu in Electronics 04 January · 8
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...
Cecelia Qiu in Electronics 31 December 2021 · 3
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 ha...
Cecelia Qiu in Electronics 29 December 2021 · 11
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 compo...
Cecelia Qiu in Electronics 22 December 2021 · 7
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 ha...
Cecelia Qiu in Electronics 18 December 2021 · 19 · 2
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...
Cecelia Qiu in Electronics 15 December 2021 · 15
Which is better, active crystal oscillator or passive crystal oscillator?
In the crystal industry, we call crystals passive crystals, crystal oscillators we call active crystal oscillators, passive crystals we usually call quartz crystal resonators, acti...
Cecelia Qiu in Electronics 13 December 2021 · 45