Motores eléctricos (Historia e Información)

About this Video

• Video Title: Motores eléctricos (Historia e Información)
• Channel: Electricidad Salesianos Puerto Montt, Chile
• Speakers: (Not specified in transcript)
• Duration: 00:02:53

Introduction

This video provides a brief history of the electric motor, explaining the key discoveries leading to its invention and describing the fundamental principles of its operation. The video focuses on the contributions of Oersted and Ampère and how their experiments with electromagnetism laid the groundwork for electric motor technology.

Key Takeaways

• Oersted's Discovery (1820): Oersted demonstrated that an electric current passing through a wire creates a magnetic field. His experiment involved passing current through a wire placed above iron filings on a cardboard surface, causing the filings to align with the magnetic field lines.
• Ampère's Contribution: Ampère improved upon Oersted's work by coiling the wire into a solenoid (bobbin), increasing the magnetic field strength. He showed that this coil, when energized, acts like a magnet.
• The Role of Iron Cores: Adding an iron core to the coil significantly amplified its magnetic field strength.
• Electric Motor Operation: An electric motor uses the interaction of magnetic fields to generate motion. Electric current is supplied to a rotor within a magnetic field, causing the rotor to rotate due to the repulsion and attraction of magnetic fields. This converts electrical energy into mechanical energy.