Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

A bigger motor

A bigger motor

In the middle of the base we have placed the magnet. Around the magnet we have drilled four small holes for the support wires.
We use brass wire for the supports, and we make all the connections under the base, so everything looks nice and neat. For a battery connection, we use a 9 volt battery clip.

How does it work?

When electricity flows through a coil of wire, the coil becomes an electromagnet. An electromagnet acts just like a regular magnet. It has a north pole and a south pole, and can attract and repel other magnets.

Our coil becomes an electromagnet when the bare copper half of the armature wires touch the bare wire of the supports, and electricity flows into the coil. The electromagnet has a north pole which is attracted to the south pole of the regular magnet. It also has a south pole that is repelled by the south pole of the regular magnet.

When we scraped off the insulation from the armature wires, we were careful to do it with the coil standing up, and not lying flat on the table. This makes the poles of the electromagnet point to the left and right (as if there was an invisible regular magnet that had the wire wrapped around it). If the coil was flat on the table, the poles would point up and down.

Since the poles point left and right, they have to move in order to line up with the magnet at the bottom, whose poles are aligned up and down. So the coil rotates to line up with the magnet. But once the coil is exactly lined up with the magnet, the insulated half of the wire is now touching the supports instead of the bare half. The electricity is cut off, and the coil is no longer an electromagnet. This leaves it free to coast on around until the bare copper can again touch the bare support, and start the whole process over again.

Visit Here for more.







 

More Articles to Read

App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
Free PCB Sunday: Pick your PCB
Free PCB Sunday: Pick your PCB
App note: Noise analysis for high-speed op amps
App note: Noise analysis for high-speed op amps
Skill Sunday: Arrays
Skill Sunday: Arrays
App note: Infrared remote control implementation with MSP430FR4xx
App note: Infrared remote control implementation with MSP430FR4xx
Gesture Controlled Smart Home
Gesture Controlled Smart Home
Design for a Wideband, Differential Transimpedance DAC Output
Design for a Wideband, Differential Transimpedance DAC Output
Wrist thrusters let you fly through the water effortlessly
Wrist thrusters let you fly through the water effortlessly
Bertan/Spellman 225-20R HV power supply teardown
Bertan/Spellman 225-20R HV power supply teardown
Blinking Christmas Lights
Blinking Christmas Lights
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adding an “extra sense” with rangefinders
Adding an “extra sense” with rangefinders
This wireless game controller looks like a rug
This wireless game controller looks like a rug
How to run your ESP8266 for years on a battery
How to run your ESP8266 for years on a battery
Calibration of a 3-Phase Energy Meter Board on the ADE7754
Calibration of a 3-Phase Energy Meter Board on the ADE7754
Making beats on a tiny Arduino DJ controller
Making beats on a tiny Arduino DJ controller
Qinsi-QS5100 Sn63Pb37 solder profile
Qinsi-QS5100 Sn63Pb37 solder profile
Water Detection System
Water Detection System
Professional Hi-Fi 15W Tube Amplifier circuit
Professional Hi-Fi 15W Tube Amplifier circuit
This Arduino machine will judge how sick your ollies are
This Arduino machine will judge how sick your ollies are

Top


Shares