Brushless Dc Motor 5c3n57
This document was ed by and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this report form. Report 3i3n4
Overview 26281t
& View Brushless Dc Motor as PDF for free.
More details 6y5l6z
- Words: 2,220
- Pages: 13
Brushless DC motor Brushless DC motors were developed from conventional brushed DC motors with the availability of solid state power semiconductors. So, why do we discuss brushless DC motors in a chapter on AC motors? Brushless DC motors are similar to AC synchronous motors. The major difference is that synchronous motors develop a sinusoidal back EMF, as compared to a rectangular, or trapezoidal, back EMF for brushless DC motors. Both have stator created rotating magnetic fields producing torque in a magnetic rotor. Synchronous motors are usually large multi-kilowatt size, often with electromagnet rotors. True synchronous motors are considered to be single speed, a submultiple of the powerline frequency. Brushless DC motors tend to be small– a few watts to tens of watts, with permanent magnet rotors. The speed of a brushless DC motor is not fixed unless driven by a phased locked loop slaved to a reference frequency. The style of construction is either cylindrical or pancake. (Figures and below)
Cylindrical construction: (a) outside rotor, (b) inside rotor. The most usual construction, cylindrical, can take on two forms (Figure above). The most common cylindrical style is with the rotor on the inside, above right. This style motor is used in hard disk drives. It is also possible to put the rotor on the outside surrounding the stator. Such is the case with brushless DC fan motors, sans the shaft. This style of construction may be short and fat. However, the direction of the magnetic flux is radial with respect to the rotational axis.
Pancake motor construction: (a) single stator, (b) double stator. High torque pancake motors may have stator coils on both sides of the rotor (Figure above-b). Lower torque applications like floppy disk drive motors suffice with a stator coil on one side of the rotor, (Figure above-a). The direction of the magnetic flux is axial, that is, parallel to the axis of rotation. The commutation function may be performed by various shaft position sensors: optical encoder, magnetic encoder (resolver, synchro, etc), or Hall effect magnetic sensors. Small inexpensive motors use Hall effect sensors. (Figure below) A Hall effect sensor is a semiconductor device where the electron flow is affected by a magnetic field perpendicular to the direction of current flow.. It looks like a four terminal variable resistor network. The voltages at the two outputs are complementary. Application of a magnetic field to the sensor causes a small voltage change at the output. The Hall output may drive a comparator to provide for more stable drive to the power device. Or, it may drive a compound transistor stage if properly biased. More modern Hall effect sensors may contain an integrated amplifier, and digital circuitry. This 3-lead device may directly drive the power transistor feeding a phase winding. The sensor must be mounted close to the permanent magnet rotor to sense its position.
Hall effect sensors commutate 3-φ brushless DC motor.
The simple cylindrical 3-φ motor Figure above is commutated by a Hall effect device for each of the three stator phases. The changing position of the permanent magnet rotor is sensed by the Hall device as the polarity of the ing rotor pole changes. This Hall signal is amplified so that the stator coils are driven with the proper current. Not shown here, the Hall signals may be processed by combinatorial logic for more efficient drive waveforms. The above cylindrical motor could drive a harddrive if it were equipped with a phased locked loop (PLL) to maintain constant speed. Similar circuitry could drive the pancake floppy disk drive motor (Figure below). Again, it would need a PLL to maintain constant speed.
Brushless pancake motor The 3-φ pancake motor (Figure above) has 6-stator poles and 8-rotor poles. The rotor is a flat ferrite ring magnetized with eight axially magnetized alternating poles. We do not show that the rotor is capped by a mild steel plate for mounting to the bearing in the middle of the stator. The steel plate also helps complete the magnetic circuit. The stator poles are also mounted atop a steel plate, helping to close the magnetic circuit. The flat stator coils are trapezoidal to more closely fit the coils, and approximate the rotor poles. The 6-stator coils comprise three winding phases. If the three stator phases were successively energized, a rotating magnetic field would be generated. The permanent magnet rotor would follow as in the case of a synchronous motor. A two pole rotor would follow this field at the same rotation rate as the rotating field. However, our 8-pole rotor will rotate at a submultiple of this rate due the the extra poles in the rotor. The brushless DC fan motor (Figure below) has these feature:
Brushless fan motor, 2-φ.
The stator has 2-phases distributed between 4-poles There are 4-salient poles with no windings to eliminate zero torque points. The rotor has four main drive poles. The rotor has 8-poles superimposed to help eliminate zero torque points. The Hall effect sensors are spaced at 45o physical. The fan housing is placed atop the rotor, which is placed over the stator.
The goal of a brushless fan motor is to minimize the cost of manufacture. This is an incentive to move lower performance products from a 3-φ to a 2-φ configuration. Depending on how it is driven, it may be called a 4-φ motor. You may recall that conventional DC motors cannot have an even number of armature poles (2,4, etc) if they are to be self-starting, 3,5,7 being common. Thus, it is possible for a hypothetical 4-pole motor to come to rest at a torque minima, where it cannot be started from rest. The addition of the four small salient poles with no windings superimposes a ripple torque upon the torque vs position curve. When this ripple torque is added to normal energized-torque curve, the result is that torque minima are partially removed. This makes it possible to start the motor for all possible stopping positions. The addition of eight permanant magnet poles to the normal 4-pole permanent magnet rotor superimposes a small second harmonic ripple torque upon the normal 4-pole ripple torque. This further removes the torque minima. As long as the torque minima does not drop to zero, we should be able to start the motor. The more successful we are in removing the torque minima, the easier the motor starting. The 2-φ stator requires that the Hall sensors be spaced apart by 90o electrical. If the rotor was a 2-pole rotor, the Hall sensors would be placed 90o physical. Since we have a 4-pole permanent magnet rotor, the sensors must be placed 45o physical to achieve the 90o electrical spacing. Note Hall spacing above. The majority of the torque is due to the interaction of the inside stator 2-φ coils with the 4-pole section of the rotor. Moreover, the 4-pole section of the rotor must be on the bottom so that the Hall sensors will sense the proper commutation signals. The 8-poles rotor section is only for improving motor starting.
Brushless DC motor 2-φ push-pull drive. In Figure above, the 2-φ push-pull drive (also known as 4-φ drive) uses two Hall effect sensors to drive four windings. The sensors are spaced 90o electrical apart, which is 90o physical for a single pole rotor. Since the Hall sensor has two complementary outputs, one sensor provides commutation for two opposing windings. Principle of the brushless DC motor
The brushless DC motor is the combination of a permanent excited synchronous motor and a frequency inverter. The inverter has to replace the commutator of a conventional DC motor. Fig. 2 and Fig. 3 show how a brushless DC motor can be derived from a mechanically commutated DC motor with three armature slots. Its armature winding corresponds to a three phase winding in delta connection. The commutator acts like a three phase frequency converter. Stator (excitation) and rotor (armature) change places.
Figure 1: Principle of a permanent magnet excited DC motor: construction
Figure 2: Principle of a permanent magnet excited DC motor: wiring
Figure 3: Principle of a permanent magnet excited DC motor - equivalent circuit
The commutation of a brushless DC motor depends on the position of the rotor. The angle between the magneto-motive forces of stator and rotor is fixed to (el.), so the motor produces maximum torque and needs low reactive current - it might be useful to advance commutation by few degrees to compensate the effects of the stray inductance and minimize reactive current. Speed can only be controlled by the the motor voltage. The motor behaves like a DC motor. Unlike the synchronous motor there are no problems with instability at any speed. Because of the PWM frequency inverter, variation of the motor voltage can be achieved easily by changing the duty cycle of the pulse width modulation. Suitable PWM techniques allow regenerative breaking, which increases dynamic and efficiency of the drive.
SORT WEIGHT | $ | SALE | GLOBAL FC 28-22 Brushless Outrunner 1200kv
SKU: FC2822 WEIGHT : 53g | IN STOCK
$6.99
hexTronik DT750 Brushless Outrunner 750kv
SKU: DT750 WEIGHT : 79g | IN STOCK
$11.60
Turnigy Typhoon 450H 2215H Heli Motor 3550kv (450 class)
SKU: TY2215-3550 WEIGHT : 85g | IN STOCK
$14.05
HobbyKing Donkey ST4010-820kv Brushless Motor
SKU: ST4010-820 WEIGHT : 245g | IN STOCK
$12.35
Turnigy G10 Brushless Outrunner 1100kv
SKU: G10-1100 WEIGHT : 215g | IN STOCK
$25.74
KD A22-20L Brushless Outrunner Motor
SKU: KDA2220L WEIGHT : 125g | IN STOCK
$14.17
Turnigy G110 Brushless Outrunner 210kv (1.10 Glow)
SKU: D6354-210 50 WEIGHT : 805g | IN STOCK
$58.19
Turnigy 2830 Brushless Motor 800kv
SKU: T2830-800 WEIGHT : 89g | IN STOCK
$14.26
Turnigy G15 Brushless Outrunner 950kv
SKU: G15-950 WEIGHT : 243g | IN STOCK
$27.47
Turnigy RotoMax 1.20 Brushless Outrunner Motor
SKU: MAX1.20 WEIGHT : 902g | IN STOCK
$84.67
Turnigy D3542/5 1250KV Brushless Outrunner Motor
SKU: D3542-51250 WEIGHT : 185g | IN STOCK
$18.85
Turnigy G25 Brushless Outrunner 870kv
SKU: G25-870 WEIGHT : 269g | IN STOCK
$25.46
Turnigy G15 Brushless Outrunner 810kv
SKU: G15-810 WEIGHT : 275g | IN STOCK
$28.21
Turnigy G25 Brushless Outrunner 610kv
SKU: G25-610 WEIGHT : 255g | IN STOCK
$25.35
KD A22-15M Brushless Outrunner Motor
SKU: KDA2215M WEIGHT : 119g | IN STOCK
$13.86
HobbyKing Donkey ST3508-730kv Brushless Motor
SKU: ST3508-730 WEIGHT : 162g | IN STOCK
$8.85
2205C 1400Kv Brushless motor
SKU: 2205C-1400 WEIGHT : 58g | IN STOCK
$9.18
Turnigy L2822-3700 Brushless Heli Motor (420w)
SKU: L2822-3700 WEIGHT : 113g | IN STOCK
$12.61
Turnigy 2810 EDF Outrunner 4000kv for 55/64mm
SKU: T28102B4000 WEIGHT : 95g | IN STOCK
$10.44
KD A22-10S Brushless Outrunner Motor
SKU: KDA2210S WEIGHT : 94g | IN STOCK
$12.88
Turnigy 3648 Brushless Motor 1450kv
SKU: T3648-1450 WEIGHT : 259g | IN STOCK
$28.07
HKP8-C10 Micro Power System with Gearbox + Prop 8700kv
SKU: HKP8-C10 WEIGHT : 18g | IN STOCK
$14.30
Turnigy 3025-850kv 1300w Helicopter Motor
SKU: L3025-850 WEIGHT : 220g | IN STOCK
$17.03
Turnigy G32 Brushless Outrunner 600kv
SKU: G32-600 WEIGHT : 310g | IN STOCK
$31.07
Tower Pro 2408-21T Brushless Outrunner Motor 1400kv
SKU: 026000004 WEIGHT : 68g | IN STOCK
$6.37
450 Heli Outrunner 3500kv 370w 2837B Brushless
SKU: 2838-3500H WEIGHT : 110g | IN STOCK
$10.95
Turnigy 3025-1500kv 1300w Helicopter Motor
SKU: L3025-1500 WEIGHT : 210g | IN STOCK
$17.03
C20 brushless Outrunner 2050kv
SKU: C20-2050kv WEIGHT : 55g | IN STOCK
$8.71
AX 2308N 1100kv brushless Micro Motor
SKU: AX-2308N1100 WEIGHT : 50g | IN STOCK
$6.32
Turnigy L2210C-1200 Brushless Motor (150w)
SKU: L2210C-1200 WEIGHT : 89g | IN STOCK
$11.96
Turnigy G46 Brushless Outrunner 670kv (.46 Glow)
SKU: G46-670 WEIGHT : 330g | IN STOCK
$46.09
Turnigy2836 Brushless Outrunner 1000kv
SKU: T2836-1000 WEIGHT : 137g | IN STOCK
$18.68
Turnigy 3020 Brushless Outrunner Motor 1800kv
SKU: T3020-1800 WEIGHT : 49g | IN STOCK
$15.64
Turnigy L3015A-1000 Brushless Motor
SKU: L3015A-1000 WEIGHT : 181g | IN STOCK
$15.99
Turnigy 2211 Brushless Motor 1700kv
SKU: T2211-1700 WEIGHT : 47g | IN STOCK
$9.75
Turnigy L3040A-480G Brushless Motor
SKU: L3040A-480G WEIGHT : 205g | IN STOCK
$18.33
Turnigy 4250 Brushless Motor 1000kv
SKU: T4250-1000 WEIGHT : 269g | IN STOCK
$30.09
HobbyKing AP-03 7000kv Brushless Micro Motor (3.1g)
SKU: HK-AP03-7000 WEIGHT : 15g | IN STOCK
$17.99
ADH300L Brushless Outrunner 1100kv
SKU: ADH300L WEIGHT : 55g | IN STOCK
$11.96
HobbyKing 2314 Brushless Outrunner 2000KV
SKU: HK2314-2000 WEIGHT : 37g | IN STOCK
$13.26
HobbyKing 2310 Brushless Outrunner 2250KV
SKU: HK2310-2250 WEIGHT : 32g | IN STOCK
$13.26
Turnigy 2836 Brushless 450-Size Heli Motor 3700kv
SKU: T2836-3700 WEIGHT : 131g | IN STOCK
$18.68
hexTronik 24gram Brushless Outrunner 1300kv
SKU: HXM2730-1300 WEIGHT : 45g | IN STOCK
$8.53
HobbyKing 2312 Brushless Outrunner 2000KV
SKU: HK2312-2000 WEIGHT : 35g | IN STOCK
$13.26
Turnigy 2632 Brushless Motor 1500kv
SKU: T2632-1500 WEIGHT : 89g | IN STOCK
$13.64
Floater-Jet Replacement Motor (AXN-2208-2150)
SKU: AXN-2208-2150 WEIGHT : 60g | IN STOCK
$8.49
Turnigy T600 Brushless Outrunner for 600 Heli (1100kv)
SKU: T600-1100 WEIGHT : 429g | IN STOCK
$59.99
A28M Brushless Outrunner 1100kv
SKU: A28M-1100kv WEIGHT : 67g | IN STOCK
$8.05
Turnigy Park250 Brushless Outrunner 2050kv
SKU: Park250-2050 WEIGHT : 44g | IN STOCK
$10.58
Turnigy G32 Brushless Outrunner 530kv (.32 Glow)
SKU: G32-530 WEIGHT : 275g | IN STOCK
$26.29
Cylindrical construction: (a) outside rotor, (b) inside rotor. The most usual construction, cylindrical, can take on two forms (Figure above). The most common cylindrical style is with the rotor on the inside, above right. This style motor is used in hard disk drives. It is also possible to put the rotor on the outside surrounding the stator. Such is the case with brushless DC fan motors, sans the shaft. This style of construction may be short and fat. However, the direction of the magnetic flux is radial with respect to the rotational axis.
Pancake motor construction: (a) single stator, (b) double stator. High torque pancake motors may have stator coils on both sides of the rotor (Figure above-b). Lower torque applications like floppy disk drive motors suffice with a stator coil on one side of the rotor, (Figure above-a). The direction of the magnetic flux is axial, that is, parallel to the axis of rotation. The commutation function may be performed by various shaft position sensors: optical encoder, magnetic encoder (resolver, synchro, etc), or Hall effect magnetic sensors. Small inexpensive motors use Hall effect sensors. (Figure below) A Hall effect sensor is a semiconductor device where the electron flow is affected by a magnetic field perpendicular to the direction of current flow.. It looks like a four terminal variable resistor network. The voltages at the two outputs are complementary. Application of a magnetic field to the sensor causes a small voltage change at the output. The Hall output may drive a comparator to provide for more stable drive to the power device. Or, it may drive a compound transistor stage if properly biased. More modern Hall effect sensors may contain an integrated amplifier, and digital circuitry. This 3-lead device may directly drive the power transistor feeding a phase winding. The sensor must be mounted close to the permanent magnet rotor to sense its position.
Hall effect sensors commutate 3-φ brushless DC motor.
The simple cylindrical 3-φ motor Figure above is commutated by a Hall effect device for each of the three stator phases. The changing position of the permanent magnet rotor is sensed by the Hall device as the polarity of the ing rotor pole changes. This Hall signal is amplified so that the stator coils are driven with the proper current. Not shown here, the Hall signals may be processed by combinatorial logic for more efficient drive waveforms. The above cylindrical motor could drive a harddrive if it were equipped with a phased locked loop (PLL) to maintain constant speed. Similar circuitry could drive the pancake floppy disk drive motor (Figure below). Again, it would need a PLL to maintain constant speed.
Brushless pancake motor The 3-φ pancake motor (Figure above) has 6-stator poles and 8-rotor poles. The rotor is a flat ferrite ring magnetized with eight axially magnetized alternating poles. We do not show that the rotor is capped by a mild steel plate for mounting to the bearing in the middle of the stator. The steel plate also helps complete the magnetic circuit. The stator poles are also mounted atop a steel plate, helping to close the magnetic circuit. The flat stator coils are trapezoidal to more closely fit the coils, and approximate the rotor poles. The 6-stator coils comprise three winding phases. If the three stator phases were successively energized, a rotating magnetic field would be generated. The permanent magnet rotor would follow as in the case of a synchronous motor. A two pole rotor would follow this field at the same rotation rate as the rotating field. However, our 8-pole rotor will rotate at a submultiple of this rate due the the extra poles in the rotor. The brushless DC fan motor (Figure below) has these feature:
Brushless fan motor, 2-φ.
The stator has 2-phases distributed between 4-poles There are 4-salient poles with no windings to eliminate zero torque points. The rotor has four main drive poles. The rotor has 8-poles superimposed to help eliminate zero torque points. The Hall effect sensors are spaced at 45o physical. The fan housing is placed atop the rotor, which is placed over the stator.
The goal of a brushless fan motor is to minimize the cost of manufacture. This is an incentive to move lower performance products from a 3-φ to a 2-φ configuration. Depending on how it is driven, it may be called a 4-φ motor. You may recall that conventional DC motors cannot have an even number of armature poles (2,4, etc) if they are to be self-starting, 3,5,7 being common. Thus, it is possible for a hypothetical 4-pole motor to come to rest at a torque minima, where it cannot be started from rest. The addition of the four small salient poles with no windings superimposes a ripple torque upon the torque vs position curve. When this ripple torque is added to normal energized-torque curve, the result is that torque minima are partially removed. This makes it possible to start the motor for all possible stopping positions. The addition of eight permanant magnet poles to the normal 4-pole permanent magnet rotor superimposes a small second harmonic ripple torque upon the normal 4-pole ripple torque. This further removes the torque minima. As long as the torque minima does not drop to zero, we should be able to start the motor. The more successful we are in removing the torque minima, the easier the motor starting. The 2-φ stator requires that the Hall sensors be spaced apart by 90o electrical. If the rotor was a 2-pole rotor, the Hall sensors would be placed 90o physical. Since we have a 4-pole permanent magnet rotor, the sensors must be placed 45o physical to achieve the 90o electrical spacing. Note Hall spacing above. The majority of the torque is due to the interaction of the inside stator 2-φ coils with the 4-pole section of the rotor. Moreover, the 4-pole section of the rotor must be on the bottom so that the Hall sensors will sense the proper commutation signals. The 8-poles rotor section is only for improving motor starting.
Brushless DC motor 2-φ push-pull drive. In Figure above, the 2-φ push-pull drive (also known as 4-φ drive) uses two Hall effect sensors to drive four windings. The sensors are spaced 90o electrical apart, which is 90o physical for a single pole rotor. Since the Hall sensor has two complementary outputs, one sensor provides commutation for two opposing windings. Principle of the brushless DC motor
The brushless DC motor is the combination of a permanent excited synchronous motor and a frequency inverter. The inverter has to replace the commutator of a conventional DC motor. Fig. 2 and Fig. 3 show how a brushless DC motor can be derived from a mechanically commutated DC motor with three armature slots. Its armature winding corresponds to a three phase winding in delta connection. The commutator acts like a three phase frequency converter. Stator (excitation) and rotor (armature) change places.
Figure 1: Principle of a permanent magnet excited DC motor: construction
Figure 2: Principle of a permanent magnet excited DC motor: wiring
Figure 3: Principle of a permanent magnet excited DC motor - equivalent circuit
The commutation of a brushless DC motor depends on the position of the rotor. The angle between the magneto-motive forces of stator and rotor is fixed to (el.), so the motor produces maximum torque and needs low reactive current - it might be useful to advance commutation by few degrees to compensate the effects of the stray inductance and minimize reactive current. Speed can only be controlled by the the motor voltage. The motor behaves like a DC motor. Unlike the synchronous motor there are no problems with instability at any speed. Because of the PWM frequency inverter, variation of the motor voltage can be achieved easily by changing the duty cycle of the pulse width modulation. Suitable PWM techniques allow regenerative breaking, which increases dynamic and efficiency of the drive.
SORT WEIGHT | $ | SALE | GLOBAL FC 28-22 Brushless Outrunner 1200kv
SKU: FC2822 WEIGHT : 53g | IN STOCK
$6.99
hexTronik DT750 Brushless Outrunner 750kv
SKU: DT750 WEIGHT : 79g | IN STOCK
$11.60
Turnigy Typhoon 450H 2215H Heli Motor 3550kv (450 class)
SKU: TY2215-3550 WEIGHT : 85g | IN STOCK
$14.05
HobbyKing Donkey ST4010-820kv Brushless Motor
SKU: ST4010-820 WEIGHT : 245g | IN STOCK
$12.35
Turnigy G10 Brushless Outrunner 1100kv
SKU: G10-1100 WEIGHT : 215g | IN STOCK
$25.74
KD A22-20L Brushless Outrunner Motor
SKU: KDA2220L WEIGHT : 125g | IN STOCK
$14.17
Turnigy G110 Brushless Outrunner 210kv (1.10 Glow)
SKU: D6354-210 50 WEIGHT : 805g | IN STOCK
$58.19
Turnigy 2830 Brushless Motor 800kv
SKU: T2830-800 WEIGHT : 89g | IN STOCK
$14.26
Turnigy G15 Brushless Outrunner 950kv
SKU: G15-950 WEIGHT : 243g | IN STOCK
$27.47
Turnigy RotoMax 1.20 Brushless Outrunner Motor
SKU: MAX1.20 WEIGHT : 902g | IN STOCK
$84.67
Turnigy D3542/5 1250KV Brushless Outrunner Motor
SKU: D3542-51250 WEIGHT : 185g | IN STOCK
$18.85
Turnigy G25 Brushless Outrunner 870kv
SKU: G25-870 WEIGHT : 269g | IN STOCK
$25.46
Turnigy G15 Brushless Outrunner 810kv
SKU: G15-810 WEIGHT : 275g | IN STOCK
$28.21
Turnigy G25 Brushless Outrunner 610kv
SKU: G25-610 WEIGHT : 255g | IN STOCK
$25.35
KD A22-15M Brushless Outrunner Motor
SKU: KDA2215M WEIGHT : 119g | IN STOCK
$13.86
HobbyKing Donkey ST3508-730kv Brushless Motor
SKU: ST3508-730 WEIGHT : 162g | IN STOCK
$8.85
2205C 1400Kv Brushless motor
SKU: 2205C-1400 WEIGHT : 58g | IN STOCK
$9.18
Turnigy L2822-3700 Brushless Heli Motor (420w)
SKU: L2822-3700 WEIGHT : 113g | IN STOCK
$12.61
Turnigy 2810 EDF Outrunner 4000kv for 55/64mm
SKU: T28102B4000 WEIGHT : 95g | IN STOCK
$10.44
KD A22-10S Brushless Outrunner Motor
SKU: KDA2210S WEIGHT : 94g | IN STOCK
$12.88
Turnigy 3648 Brushless Motor 1450kv
SKU: T3648-1450 WEIGHT : 259g | IN STOCK
$28.07
HKP8-C10 Micro Power System with Gearbox + Prop 8700kv
SKU: HKP8-C10 WEIGHT : 18g | IN STOCK
$14.30
Turnigy 3025-850kv 1300w Helicopter Motor
SKU: L3025-850 WEIGHT : 220g | IN STOCK
$17.03
Turnigy G32 Brushless Outrunner 600kv
SKU: G32-600 WEIGHT : 310g | IN STOCK
$31.07
Tower Pro 2408-21T Brushless Outrunner Motor 1400kv
SKU: 026000004 WEIGHT : 68g | IN STOCK
$6.37
450 Heli Outrunner 3500kv 370w 2837B Brushless
SKU: 2838-3500H WEIGHT : 110g | IN STOCK
$10.95
Turnigy 3025-1500kv 1300w Helicopter Motor
SKU: L3025-1500 WEIGHT : 210g | IN STOCK
$17.03
C20 brushless Outrunner 2050kv
SKU: C20-2050kv WEIGHT : 55g | IN STOCK
$8.71
AX 2308N 1100kv brushless Micro Motor
SKU: AX-2308N1100 WEIGHT : 50g | IN STOCK
$6.32
Turnigy L2210C-1200 Brushless Motor (150w)
SKU: L2210C-1200 WEIGHT : 89g | IN STOCK
$11.96
Turnigy G46 Brushless Outrunner 670kv (.46 Glow)
SKU: G46-670 WEIGHT : 330g | IN STOCK
$46.09
Turnigy2836 Brushless Outrunner 1000kv
SKU: T2836-1000 WEIGHT : 137g | IN STOCK
$18.68
Turnigy 3020 Brushless Outrunner Motor 1800kv
SKU: T3020-1800 WEIGHT : 49g | IN STOCK
$15.64
Turnigy L3015A-1000 Brushless Motor
SKU: L3015A-1000 WEIGHT : 181g | IN STOCK
$15.99
Turnigy 2211 Brushless Motor 1700kv
SKU: T2211-1700 WEIGHT : 47g | IN STOCK
$9.75
Turnigy L3040A-480G Brushless Motor
SKU: L3040A-480G WEIGHT : 205g | IN STOCK
$18.33
Turnigy 4250 Brushless Motor 1000kv
SKU: T4250-1000 WEIGHT : 269g | IN STOCK
$30.09
HobbyKing AP-03 7000kv Brushless Micro Motor (3.1g)
SKU: HK-AP03-7000 WEIGHT : 15g | IN STOCK
$17.99
ADH300L Brushless Outrunner 1100kv
SKU: ADH300L WEIGHT : 55g | IN STOCK
$11.96
HobbyKing 2314 Brushless Outrunner 2000KV
SKU: HK2314-2000 WEIGHT : 37g | IN STOCK
$13.26
HobbyKing 2310 Brushless Outrunner 2250KV
SKU: HK2310-2250 WEIGHT : 32g | IN STOCK
$13.26
Turnigy 2836 Brushless 450-Size Heli Motor 3700kv
SKU: T2836-3700 WEIGHT : 131g | IN STOCK
$18.68
hexTronik 24gram Brushless Outrunner 1300kv
SKU: HXM2730-1300 WEIGHT : 45g | IN STOCK
$8.53
HobbyKing 2312 Brushless Outrunner 2000KV
SKU: HK2312-2000 WEIGHT : 35g | IN STOCK
$13.26
Turnigy 2632 Brushless Motor 1500kv
SKU: T2632-1500 WEIGHT : 89g | IN STOCK
$13.64
Floater-Jet Replacement Motor (AXN-2208-2150)
SKU: AXN-2208-2150 WEIGHT : 60g | IN STOCK
$8.49
Turnigy T600 Brushless Outrunner for 600 Heli (1100kv)
SKU: T600-1100 WEIGHT : 429g | IN STOCK
$59.99
A28M Brushless Outrunner 1100kv
SKU: A28M-1100kv WEIGHT : 67g | IN STOCK
$8.05
Turnigy Park250 Brushless Outrunner 2050kv
SKU: Park250-2050 WEIGHT : 44g | IN STOCK
$10.58
Turnigy G32 Brushless Outrunner 530kv (.32 Glow)
SKU: G32-530 WEIGHT : 275g | IN STOCK
$26.29
Related Documents 3h463d
Brushless Dc Motor 5c3n57
October 2019 57
Brushless Dc Motor Fundamentals.pdf 503k1u
December 2019 45
Brushless Dc Motor 5c3n57
November 2019 37
Brushless Dc (bldc) Motor Fundamentals 6t361
December 2019 55
Brushless Dc Motor Control Using Pic 4g6hb
October 2022 0
Motor Brushless c4b5f
November 2019 69More Documents from "Yova Prameswari" 2f1gi
Brushless Dc Motor 5c3n57
November 2019 37
Penutup Balik Otomatis 4jw48
July 2020 0
Pln Buku 3 v5i3s
September 2020 0
Pop Art Y Expresionismo Abstracto Solano m4u3z
November 2019 37
Check List Ds 594 5b2z5k
February 2021 0