An alternator is a type of generator that's commonly used in vehicles, while generators can be used in a variety of applications. Both devices convert mechanical energy into electrical energy. [1, 2, 3]
| Alternator | Generator |
Current type | Alternating current (AC) | AC or direct current (DC) |
Magnetic field | Rotating | Stationary or fixed |
Armature movement | Stationary | Rotating |
Efficiency | More efficient | Less efficient |
Output | Higher output | Lower output |
How they work [4, 5]
Alternator
A drive belt turns the alternator's rotor shaft, which spins magnets inside a coil to generate AC. [4, 5]
Generator
A conductor is rotated within a magnetic field to create a voltage difference that generates electricity. [2]
Applications [2]
- Alternator: Used in vehicles to charge the battery and power electrical components. [2]
- Generator: Used in portable units to power homes and other structures. [3]
Alternators are the preferred choice in most modern applications because of their efficiency and ability to produce higher currents. [2]
EDIT BY ME: Generators were used almost universally in WWII vehicles