(1) crane: it is a powerful electromagnet used in industry, which can be used to lift steel plates, containers, scrap iron, etc.
(2) telephone.
(3) ammeter, voltmeter and ammeter.
(4) electric bell, etc.
(5) Automatic control equipment
(6) Industrial automation control and office automation.
(7) Packaging machinery, medical instruments, food machinery, textile machinery, etc.
(8) electromagnetic relay.
(9) Maglev train.
Note: Devices that generate electromagnetism when energized. A conductive winding matching its power is wound around the outside of the iron core. This coil with current is as magnetic as a magnet, also called an electromagnet. We usually make it into a strip or hoof shape to make the iron core easier to magnetize. In addition, in order to demagnetize the electromagnet immediately after power failure, we often use soft iron or silicon steel materials with faster demagnetization speed. Such an electromagnet is magnetic when it is energized and disappears when it is de-energized. Electromagnet is widely used in our daily life, and the power of generator is greatly improved because of its invention.