V-Reg II Dynamo Voltage Regulator, Negative

V-Reg II dynamo voltage regulator, to suit negative earth.  Supplied with fitting instructions.

This is a solid state encapsulated regulator for motorcycles using the Lucas E3 type dynamo. The NanoContols dynamo regulator is designed to replace the mechanical regulator with modern reliable semi-conductors, and can handle up to 100W (requires good cool airflow) at 6V and even more for the 12V version, provided the dynamo is capable of delivering this power. The regulator must be used with a known good automotive battery (minimum 5 Amp-hours) and is guaranteed, subject to correct fitting and use with a known good dynamo.

The V-Reg II is an upgraded version of the original V-Reg. New features include:

– Current limit to the field winding, allows excellent performance when using a 6V dynamo on a 12V system.

– Tougher electronics, with the introduction of higher energy spark suppression to reduce spikes generated by the dynamo.

– Improved “thermal foldback” which progressively reduces output power if the regulator gets too hot, indirectly limiting the dynamo from excessive current.

– Higher specification voltage reference.

– Better servo loop stability, with new electronics which ‘predict’ when the output voltage is nearly correct and control the field current earlier.

Voltage and Polarity

WARNING:  Ensure you fit a regulator of correct voltage and polarity.

All regulators are set to operate at 6V – the GREEN link wire is intact.  For 12V operation the small GREEN wire loop should be cut and sealed (with epoxy or silicone).

Our part no:  V-REG2-NEG