Uploaded March 2022 | Updated September 2026, 1 week ago
Lego wind turbine produces switching electrical power with electromagnetic generator and bistable multivibrator. All components are displayed and described in detail.
Chapters
00:00 Wind Turbine
00:16 Bifilar Coil
00:36 Rotor and Electronic Circuit
00:56 Turbine Spinning and Flashing LEDs
01:59 Measuring RPM
Circuit Operation—Refer to Schematic Diagram
When the ring magnet spins, its north pole moves closer toward the coil, inducing an electromotive force (emf) through L1. This results in current flowing through R1, forward biasing Q2, which becomes conductive. When the voltage across LED1 reaches the forwarding voltage of 1.7 V, the LED switches on and flashes. When the south pole moves toward the coil, the process is similar with L2, R2, Q1, and LED2 respectively. The process repeats as long as the magnet spins and the rate of change of the magnetic flux (dφ/dt) is sufficiently high.
Nikola Tesla invented and patented the Bifilar Coil on January 9, 1894
Watch devices that generate electrical power
youtube.com/playlist?list=PLCbYhDNjOviFVjuMss8R8r9tmGjZjESa-
Music Title: “Nightlife”
Composer and Acoustic Guitar: Michael Kobrin
Album: “Searching”, Released 2016
Mastered at Turtletone Studios, NYC, U.S.A.
#windpower #windenergy #electricgenerator #PhysicsWithLego #legoengineering #DIYPhysicsDemo
Lego wind turbine produces switching electrical power with electromagnetic generator and bistable multivibrator. All components are displayed and described in detail.
Chapters
00:00 Wind Turbine
00:16 Bifilar Coil
00:36 Rotor and Electronic Circuit
00:56 Turbine Spinning and Flashing LEDs
01:59 Measuring RPM
Circuit Operation—Refer to Schematic Diagram
When the ring magnet spins, its north pole moves closer toward the coil, inducing an electromotive force (emf) through L1. This results in current flowing through R1, forward biasing Q2, which becomes conductive. When the voltage across LED1 reaches the forwarding voltage of 1.7 V, the LED switches on and flashes. When the south pole moves toward the coil, the process is similar with L2, R2, Q1, and LED2 respectively. The process repeats as long as the magnet spins and the rate of change of the magnetic flux (dφ/dt) is sufficiently high.
Nikola Tesla invented and patented the Bifilar Coil on January 9, 1894
Watch devices that generate electrical power
youtube.com/playlist?list=PLCbYhDNjOviFVjuMss8R8r9tmGjZjESa-
Music Title: “Nightlife”
Composer and Acoustic Guitar: Michael Kobrin
Album: “Searching”, Released 2016
Mastered at Turtletone Studios, NYC, U.S.A.
#windpower #windenergy #electricgenerator #PhysicsWithLego #legoengineering #DIYPhysicsDemo
