The Bosch compact alternator is becoming very popular with a number of European manufacturers and others. Figure bellow shows a cut-away picture of this machine. The key points are as follows:
- 20–70% more power than conventional units.
- 15–35% better power-to-weight ratio.
- Maximum speed up to 20 000 rev/min.
- Twin interior cooling fans.
- Precision construction for reduced noise.
- Versions available: 70, 90 and up to 170 A.