How is a real electric motor made?

Materials and tools.

Battery; Enameled wire;

small round magnets;

Two needles with larger pinholes (wire or paper clips can also be used);

utility knives; a thicker pen (e.g., a highlighter);

Insulating tape (if you don't have one, you can use regular tape).

Procedure. 1. The first step is to make the coil.

Wrap the highlighter with enameled wire, about 15 turns. Be careful not to wrap around the ends of the thread, leaving both ends of the thread. Then wrap the ends of the wire around the coil to fix the shape, as shown in the figure below.

Note that this is a complete wire.

Then use a utility knife to remove part of the insulation at both ends of the wire, as shown in the figure below. Note that the insulation at one end can be removed by a full turn, but only half of the insulation at the other end can be removed. In other words, when the coil is spinning, it is not energized half the time.

2. The second step is to make the bracket.

In this step, the coil is placed on two needles with larger pinholes. If there is no such needle, it can also be replaced with a wire or paper clip as a wire holder.

3. The third step is assembly.

Place the battery flat on the tabletop and secure it with plasticine as shown in the figure below.

Observe the effect. As long as the battery is connected, the coil can be moved. If it doesn't move, try spinning the coil.

Experimental principle. In this experiment, coils, wires, and batteries form a closed circuit. A magnetic field is generated around the coil through which the current is passed, which repels the magnet underneath, so it spins!

Why only a portion of the insulation is removed? This is because if the insulation layer is removed by a full turn, the coil will rotate to a certain position and attract the magnet, and the coil will not rotate.

Copper wires (enameled wires) are wound along the two end faces of the spool into coil packs.

Use a rubber band to secure the coil windings.

Thread the bamboo skewer through the center of the spool.

Connect the two ends of the coil to the metal washer and put the washer on the bamboo skewer.

Motor production flow chart:

Analysis: 1. Machining technology: including rotor machining and shaft machining.

2. Iron core manufacturing process: including the punching of the magnetic pole core and the stacking of punching sheets.

3. Winding manufacturing process: including coil manufacturing, winding embedding and insulation treatment.

Main Elements: Stator Core Effect: A part of the magnetic circuit of the motor, and the stator windings are placed on it.

Structure: The stator core is generally made of silicon steel sheets with an insulating layer on the surface of millimeters thick.

It is punched and stacked, and is evenly distributed in the inner circle of the core.

slots for embedding the stator windings.

There are the following types of stator iron eggplant trough types:

Semi-closed groove: the efficiency and power factor of the motor.

Higher, but more difficult to insulate and insulate. It is generally used in small low-voltage motors.

Semi-open groove: can be embedded in the forming winding, generally used for large and medium-sized low-voltage motors. The so-called forming winding means that the winding can be insulated in advance and then put into the groove.

Open groove: used to embed forming winding, convenient insulation method, mainly used in the high-voltage motor of Sonaheng.

Here's how to make an electric motor:

An iron nail, a battery, a wire, a button magnet (it is recommended to use the neodymium magnet on the headphones), as long as you use these old pure things above, you can make the world's simplest motor in 30 seconds.

1. Prepare materials and tools, including motors, coils, capacitors, pulleys, screws, iron sheets, pliers, etc.

2. Solder the capacitor and coil and put it in a plastic box.

3. Disassemble the motor and take out the height of the core pants. Then cut the iron sheet to a suitable size, bend the iron sheet into a "U" shape with pliers, and put it into the iron core.

4. Fix the pulley on the motor shaft so that it can rotate.

5. Insert the iron core into the "U" groove in the middle of the pulley, and fix the iron core on the motor with screws.

6. Connect the wires of the capacitor and coil to the two interfaces of the motor respectively.

7. Check whether the circuit is connected correctly, and then connect an LED bulb to the connector of the capacitor.

8. Manually rotate the pulley to observe whether the bulb lights up. If it lights up, it means that the light generator has been successfully made.

The above are the steps to make an electric light generator, after the production is completed, you can use it to generate electricity and provide convenience for outdoor life.

Principle of light bulb power generation:

There are some very thin wires in the light bulb, and the current enters the car through the wires

This type of light bulb emits light because of heat.

The luminous tube emits light differently from a light bulb. It is to fill the lamp with some special gas, and then coat the inner wall of the lamp with phosphor, and after the electricity is turned on, the light is produced due to discharge. Fluorescent lamps are much brighter than light bulbs that consume the same amount of electricity.

The electric motor is composed of many parts such as the housing, the rotor bar, the magnetic core, and the coil, and it looks complicated. In fact, as long as there is a magnetic field and an energized conductor, the electric erector machine can also be very simple.

Prepare materials: a battery, a wire, a screw, a small round magnetic sheet (the small magnetic sheet can be removed from the magnetic buckle on the wallet, mobile phone bag or gift box).

Experimental procedure:1Attach the small magnetic sheet to the cap of the screw.

2.Suck the tip of the screw on the positive pole of the battery.

3.Attach one end of the wire to the negative terminal of the battery, and touch the edge of the small magnetic sheet with the other end.

4.The screws and small magnetic sheets spun up.

The steps are as follows: 1. Wrap the enameled wire into a rectangular coil, which can be wrapped around the eraser, and it is rectangular after winding, about 8 to 10 turns. After winding, wrap it out from the short side of the rectangular coil, leaving 3.4 cm on each side.

Use a knife to scrape off all the paint on one side and the paint off the other side.

2. Roll the two copper wires into a small circle.

3. Put the round magnet on the sponge, put the battery on the magnet, and keep the diameter of the battery and the magnet the same size. Put the battery on the magnet**, and if you can't stop at **, turn it slowly a few times.

4. Insert the copper branch calendar wire on both sides of the magnet with adhesive tape, fix the two sides well, let the copper bury the wire slightly bent in the middle, be sure to let the two ends of the battery contact the copper wire, or fix it with tape.

5. Put both sides of the coil in a small circle on the copper wire, and turn the coil by hand and it will keep turning.

1.Effect of magnetic field on energized wires:

1) An energized conductor is subjected to a force in a magnetic field. The direction of the force is perpendicular to the direction of the magnetic inductance line and perpendicular to the direction of the current;

2) The direction of the force of the energized conductor in the magnetic field is related to the direction of the current and the direction of the magnetic inductance line. (When one of the two changes the direction of the current or the direction of the magnetic inductance line, the direction of the force also changes mindfulness; When both the direction of the current and the direction of the magnetic inductance line change at the same time, the direction of the force does not change. ）

3) When the energized wire is perpendicular to the magnetic inductance wire, the force of the magnetic field on the energized wire is the largest; When the energized wire is parallel to the magnetic inductance wire, the magnetic field has no force effect on the energized wire.

2.Electric Motor:

1) The motor is made according to the principle that the energized coil rotates due to force in the magnetic field, and it is a device that converts electrical energy into mechanical energy.

2) The motor is composed of two parts: the rotor and the stator. Pei Qing loss.

3) The function of the reversing device is that whenever the coil just turns the balance position, it can automatically change the direction of the current in the coil to make the coil rotate continuously.

4) The method of changing the direction of rotation of the motor: change the direction of the current (exchange voltage wiring) or change the direction of the magnetic inductance line (to adjust the pole).

5) The method of increasing the speed of the motor: increase the number of coil turns, increase the magnet magnetism, and increase the current.

Left-hand rule: In electromagnetism, the left hand is placed in the magnetic field, so that the magnetic inductance line penetrates perpendicularly into the palm, the palm of the hand faces the n pole (fork in and out), and the four fingers point to the direction of the current, then the direction of the thumb is the direction of the conductor force.

A simple description of the principle: the energized wire is continuously pushed by ampere force in the magnetic field provided by the magnet to produce rotational motion.

Change the direction of the magnetic field and the direction of the battery, and the wire will be reversed.

See illustration: <>

The reason why you have to scrape off half of the paint is because you want to make the coil rotate continuously, if you scrape it all off, the coil can only turn half a circle and stop, and the direction of the current is the positive end of the battery to the coil and then to the negative electrode (the protruding end on the diagram is the positive end of the battery). To know the direction of the current in the coil, then you need to know what the winding direction of the coil is, adding the magnet can increase the magnetic force, so that the coil is more stressed and rotates more powerfully. If a magnet is used on the motor, the weight of both sides will be unbalanced.