What is Back EMF in DC Motors? - Another Teaching Moment | DigiKey
In this video, the relationship between current and magnetic flux creating back electromotive force is discussed as well as the left-hand and right-hand rules used for determining magnetic field direction and current flow.
Part List
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | 108100005 | GEARMOTOR 60 RPM 6V | 0 - Immediate | $13.41 | View Details | |
![]() | ![]() | 121388800010A | STANDARD MOTOR 13800 RPM 12V | 0 - Immediate | $230.30 | View Details |
![]() | 290-006 | GEARMOTOR 639 RPM 12V W/ 1/19 | 0 - Immediate | $29.79 | View Details | |
![]() | 290-008 | GEARMOTOR 125 RPM 6V W/ 1/53 | 0 - Immediate | $29.79 | View Details | |
![]() | ![]() | QBL4208-41-04-006 | STANDARD MOTOR 4000 RPM 24V | 22 - Immediate | $154.33 | View Details |
![]() | ![]() | QBL4208-61-04-013 | STANDARD MOTOR 4000 RPM 24V | 36 - Immediate | $194.67 | View Details |
![]() | ![]() | QBL4208-81-04-019 | STANDARD MOTOR 4000 RPM 24V | 4 - Immediate | $203.98 | View Details |
![]() | ![]() | QBL4208-100-04-025 | STANDARD MOTOR 4000 RPM 24V | 3 - Immediate | $264.73 | View Details |
![]() | ![]() | QBL5704-94-04-032 | STANDARD MOTOR 4000 RPM 36V | 5 - Immediate | $256.78 | View Details |
![]() | ![]() | QBL5704-116-04-042 | STANDARD MOTOR 4000 RPM 36V | 0 - Immediate | $294.22 | View Details |
![]() | ![]() | PD42-1-1670-CANOPEN | SERVOMOTOR 4000 RPM 24V | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | PD42-1-1670-TMCL | SERVOMOTOR 4000 RPM 24V | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | PD42-2-1670-CANOPEN | SERVOMOTOR 4000 RPM 24V | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | PD42-2-1670-TMCL | SERVOMOTOR 4000 RPM 24V | 3 - Immediate | $600.35 | View Details |
![]() | ![]() | PD42-3-1670-CANOPEN | SERVOMOTOR 4000 RPM 24V | 2 - Immediate | $667.53 | View Details |
![]() | ![]() | PD42-3-1670-TMCL | SERVOMOTOR 4000 RPM 24V | 0 - Immediate | $629.57 | View Details |
![]() | ![]() | QBL4208-100-04-025-1K | STANDARD MOTOR 4000 RPM 24V | 17 - Immediate | $398.94 | View Details |
![]() | ![]() | QBL4208-61-04-013-1K | STANDARD MOTOR 4000 RPM 24V | 39 - Immediate | $332.06 | View Details |
![]() | 1075 | SQUARE FORCE-SENSITIVE RESISTOR | 0 - Immediate | $11.09 | View Details |























