Alternator Regulators - BOSCH: Description
Bosch regulators are provided in either transistorized solid state or the vibrating contact type. Vibrating type is mounted separate from alternator. Solid state type may be integral with alternator or separately mounted.
Vibrator model is designated "ADN", and externally mounted solid state type is designated "ED". Integral mounted solid state regulator is designated "EE".
NOTE:
For Regulator Applications and additional Testing procedures, see Bosch Alternators in this Section.