Converting an electrical appliance with DC motor to AC watts

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SUMMARY

This discussion compares the power output of two electrical appliances: one with a DC motor rated at 72 watts (0.6 amps at 120 volts) and another with an AC motor rated at 250 watts. The consensus is that while wattage indicates power consumption, it does not inherently determine motor performance, as the type of motor (AC vs. DC) plays a significant role. The participants emphasize that wattage alone does not define the effectiveness of a motor, and additional context about the appliances is necessary for a complete comparison.

PREREQUISITES
  • Understanding of electrical power calculations (watts, volts, amps)
  • Knowledge of AC and DC motor characteristics
  • Familiarity with appliance specifications and performance metrics
  • Basic electrical engineering principles
NEXT STEPS
  • Research the differences between AC and DC motors in terms of efficiency and application.
  • Learn how to calculate wattage from voltage and current using the formula: Watts = Volts x Amps.
  • Explore the impact of motor type on appliance performance in various household devices.
  • Investigate the conversion of AC to DC in appliances and its implications for motor performance.
USEFUL FOR

Electrical engineers, appliance designers, and consumers interested in understanding the performance differences between AC and DC motors in household appliances.

Boris8879
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Hi,

I'm comparing two electrical appliances, one with a DC motor and the other with an AC motor. The AC appliance has 250 watts. The DC appliance has 0.6 amps and 120 volts, and its wattage is 72. Given these specs, I would like to know which appliance would have a more powerful motor?

In addition, what would be the AC watt equivalent of a DC motor with the above specs?
 
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That cannot possibly be answered without knowing more about the appliance. For instance, my dishwasher has a much more powerful motor than my electric range, yet the range consumes much more power. For those of you who think the range has no motor, you are forgetting about the clock. :)
 
The appliance is an electric hand mixer.
 
Boris8879 said:
The appliance is an electric hand mixer.
Just to be clear, you're asking which of a 250W hand-blender or a 72W hand-blender is the more powerful?
 
Yes, because the 72 watt one is a DC motor with the above specs and the 250 watt one is an AC motor. Although one obviously has a higher wattage, I'm asking if it makes a difference whether a motor is a DC or AC.
 
Watts is watts. It does not make a difference if they are AC or DC.

Still...a 120V DC kitchen appliance? Doubt it.
 
Boris8879 said:
Hi,

I'm comparing two electrical appliances, one with a DC motor and the other with an AC motor. The AC appliance has 250 watts. The DC appliance has 0.6 amps and 120 volts, and its wattage is 72. Given these specs, I would like to know which appliance would have a more powerful motor?

In addition, what would be the AC watt equivalent of a DC motor with the above specs?

Your question is kinda odd...
Let's start with a question for you:

How is AC converted to DC...in your blender for example.
 

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