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2. Motor constants - Wikipedia

   en.wikipedia.org/wiki/Motor_constants

   The rating of a brushless motor is the ratio of the motor's unloaded rotational speed (measured in RPM) to the peak (not RMS) voltage on the wires connected to the coils (the back EMF). For example, an unloaded motor of K v {\displaystyle K_{\text{v}}} = 5,700 rpm/V supplied with 11.1 V will run at a nominal speed of 63,270 rpm (= 5,700 rpm/V ...

3. Orders of magnitude (current) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(current)

   120 V AC, United States, Canada and Mexico domestic circuit breaker rating 16.6A 120 V AC, toaster, kettle (2 kW) 20A 230 V AC, Immersion heater (4.6 kW) 24A 12V DC, PC, High-performance graphics card (288W) 38.3A 120 V AC, Immersion heater (4.6 kW) 10 2: 80-160A Typical 12 V motor vehicle starter motor (typically 1–2 kW) 80-375A TIG welding ...

4. DC motor - Wikipedia

   en.wikipedia.org/wiki/DC_motor

   Small DC motors are used in tools, toys, and appliances. The universal motor, a lightweight brushed motor used for portable power tools and appliances can operate on direct current and alternating current. Larger DC motors are currently used in propulsion of electric vehicles, elevator and hoists, and in drives for steel rolling mills.

5. Brushed DC electric motor - Wikipedia

   en.wikipedia.org/wiki/Brushed_DC_electric_motor

   A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source and utilizing an electric brush for contact. Brushed motors were the first commercially important application of electric power to driving mechanical energy, and DC distribution systems were used for more than 100 years ...

6. Brushless DC electric motor - Wikipedia

   en.wikipedia.org/wiki/Brushless_DC_electric_motor

   A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields that effectively rotate in space and which the permanent magnet rotor follows.

7. Direct current - Wikipedia

   en.wikipedia.org/wiki/Direct_current

   Any stationary voltage or current waveform can be decomposed into a sum of a DC component and a zero-mean time-varying component; the DC component is defined to be the expected value, or the average value of the voltage or current over all time. Although DC stands for "direct current", DC often refers to "constant polarity".