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Universal motor
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Features:

AC/DC Compatibility: Runs on both AC and DC power.


Series-Wound Design: Armature and field coils in series for high torque.


High Speed (Up to 30,000+ RPM): Ideal for fast operation.


Compact & Lightweight: Simple construction with brushes and commutator.


Performance:

High Starting Torque: Strong power at low speeds.


Variable Speed Control: Adjustable via voltage or PWM.


Moderate Efficiency (50–70%): Lower than BLDC but cost-effective.


Louder Operation: Due to brush/commutator friction.


Advantages:

✔ Works on AC or DC – Flexible power supply.

✔ Low Cost – Simple design, affordable production.

✔ High Power-to-Size Ratio – Compact yet powerful.

✔ Easy Speed Control – Adjustable for different loads.


Applications:

Home Appliances: Vacuum cleaners, blenders, sewing machines.


Power Tools: Drills, grinders, circular saws.


Small Machinery: Food processors, pumps, portable fans.


Conclusion:

Universal motors offer versatility, affordability, and high-speed performance, making them ideal for household and light industrial tools. However, they have shorter lifespans due to brush wear and are less efficient than brushless alternatives.


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