"Applications of Electromagnets" Magical Electromagnet PPT Courseware 2

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"Applications of Electromagnets" Magical Electromagnet PPT Courseware 2

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Electromagnets are widely used in production and life:

Such as: electromagnetic lifting, electromagnetic concentrator, telephone, electric bell, electromagnetic relay, etc.

Knowledge point one: electromagnetic relay

Electromagnetic relay

1. Structure: The electromagnetic relay is composed of an electromagnet, an armature, a spring, a static contact, a moving contact, etc.

2. Principle: Electromagnetic relays work by utilizing the magnetic effect of current.

3. The essence of electromagnetic relay is to use electromagnets to control the on and off of the working circuit ().

4. Application of electromagnetic relay: The use of electromagnetic relay can realize the work of using low voltage and weak current to control high voltage and strong current; it can also realize remote control and automatic control. Such as: automatic water level alarm, anti-theft alarm, etc.

Solenoid valve door

1. Structure: The solenoid valve is composed of a valve body, a slide valve, an armature, an electromagnetic coil, etc.

2. Working principle: The solenoid valve door realizes the presence or absence of magnetism by changing the current on and off in the coil. The movement of the electromagnet drives the slide valve to move, completing the closing and opening of the door.

do you know?

The Shanghai Maglev Train is the fruit of friendly cooperation between China and Germany. It opened to traffic on December 31, 2002. It is the world's first commercial operation line, connecting the urban area and Pudong Airport. The entire journey is 30 kilometers and only takes 8 minutes. The maximum speed is as high as 430Km per hour. /h, only 50 yuan one way.

maglev train

1. Working principle of maglev train: Maglev train mainly relies on the action of magnetic field to achieve support, guidance, traction and braking functions. When the train is running, the electromagnet on the train interacts with the magnetic field generated by the track coil (the magnetic poles of the same name repel each other), causing the train to receive a large upward force, and the train will float above the track. This reduces the friction in train operation and greatly increases the speed of the train.

2. Advantages of maglev trains: high speed, comfort, no noise, no pollution, and low energy consumption.

3. The body is streamlined to reduce air resistance.

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For more information about the PPT courseware "Applications of Electromagnets and Magical Electromagnets", please click on the Applications of Electromagnets ppt Magical Electromagnets ppt tag.

"Applications of Electromagnets" PPT:

"Applications of Electromagnets" PPT Part One: Electromagnets Electromagnets: energized solenoid with an iron core inside. The working principle of electromagnet: It works by using the magnetic effect of electric current. 1. The electromagnet is a _________ with ________. 2. The electromagnet...

"Applications of Electromagnets" Magical Electromagnet PPT Courseware 3:

"Applications of Electromagnets" Magical Electromagnet PPT Courseware 3 1. What is an electromagnet? 1. Definition: An electromagnet is an energized solenoid with an iron core. 2. Structure: Coil Iron core 2. Electromagnet: 1. Design a simple electromagnet and think about the following questions..

"Applications of Electromagnets" Magical electromagnet PPT courseware:

"Application of Electromagnets" Magical Electromagnet PPT Courseware Consolidation 1. Mark the N and S poles of the energized solenoid in the picture on the right, and mark the positive and negative poles of the power supply. 2. To make the magnetic poles of the electromagnet look like the picture on the right, please connect the two endpoints a and b of the wire to the two poles of the power supply. ..

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Update Time: 2024-10-05

This template belongs to science courseware People's Education Press Fourth Grade Science Volume 2 industry PPT template

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