How to Find the Pins of a Washing Machine Motor

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Washing machine motor pins finding with the help of a digital multimeter .We need a multimeter in the continuity tester mode and a similar universal washing machine motor like the one in the picture above.We will start first by visually inspecting the washing machine motor and we find that it has 6-7 wires

Step 1: Washing Machine Motor

The universal motor is a type of electric motor that can operate on either AC or DC power and uses an electromagnet as its stator to create its magnetic field. It is a commutated series-wound motor where the stator's field coils are connected in series with the rotor windings through a commutator.
It is often referred to as an AC series motor. The universal motor is very similar to a DC series motor in construction, but is modified slightly to allow the motor to operate properly on AC power. This type of electric motor can operate well on AC because the current in both the field coils and the armature (and the resultant magnetic fields) will alternate (reverse polarity) synchronously with the supply. Hence the resulting mechanical force will occur in a consistent direction of rotation, independent of the direction of applied voltage, but determined by the commutator and polarity of the field coils.

Step 2: Washing Machine Motor Brushes

A brush or carbon brush is a device which conducts current between stationary wires and moving parts, most commonly in a rotating shaft. Typical applications include electric motors, alternators and electric generators.

For certain types of electric motors or generators to function, the coils of the rotor must be connected to complete an electrical circuit. Originally this was accomplished by affixing a copper or brass commutator or 'slip ring to the shaft, with springs pressing braided copper wire
'brushes' onto the rings which conduct the current. Such brushes provided poor commutation as they moved from one commutator segment to the next. The cure was the introduction of 'high resistance brushes' made from graphite (sometimes with added copper). Although the resistance was of the order of tens of milliohms, they were high resistance enough to provide a gradual shift of current from one commutator segment to the next. The term brush remains in use. Since the brushes wear out, they can be replaced in products intended to allow maintenance.

In our case the carbon brushes of a washing machine motor is the only part exposed to daily runtime and can wear down, break or get damaged so in 80% of the time if the motor is running bad or interrupted the brushes should be the first thing to look at

Step 3: Washing Machine Motor Speed Controll

How to control the speed of a washing machine motor is very easy with the help of a pwm voltage regulator that is cheap and control the voltage with the help of the potentiometer

Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a way of describing a digital (binary/discrete) signal that was created through a modulation technique, which involves encoding a message into a pulsing signal.
Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial[definition needed] loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers,[1] the other being maximum power point tracking.

Step 4: Washing Machine Motor Controller Circuit

This is the best washing machine motor speed controller circuit available,you can try a light dimmer but will not work the same and you can use this device to regulate the speed and you can turn your universal motor in a lathe,belt sander,circular saw,jig saw,electric bike,electric cart, wood splitter and many more projects and applications it has 10000-13000 rpm

Step 5: How to Connect the Washing Machine Motor

This is one way to connect the washing machine motor to the ac voltage 120v/220v this washing machine motor wiring diagram is called direct drive ,because the universal motor is connected straight on the mains power and the motor starts full speed from the moment is connected to the power source.

Step 6: Washing Machine Motor Pins

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