For many vehicles, Rick’s Motorsport Electrics provides a rectifier/regulator option with MOSFET technology. Some common questions regarding these are what makes them “heavy-duty” and what is the advantage to purchasing them as opposed to the cheaper options?

MOSFETs (Metal Oxide Semiconductor Field Effect Transistor) are semiconductor switches which act to control the flow of electrical current. The MOSFET design relies on a switching mechanism that provides a more precise control than other models, particularly in low-power applications like motorcycles, ATVs, and dirtbikes, due to its quicker switching capabilities. This in turn produces less heat as less energy is lost through the switching process. The result is a part that runs cooler and more efficiently. This improves the overall performance of the circuit as a whole, while also being a more reliable unit due to the cooler running condition causing less stress to the internal electronics.

In some cases, installing a MOSFET-style rectifier/regulator can even improve the overall wattage available. Less of the electrical energy is being consumed by the process of controlling the conversion of the Alternating Current from the stator to Direct Current for the battery. Combined with the improved switching abilities of the regulator handling the excess current, the more efficient circuit will do a better job keeping the battery properly charged.

We currently have MOSFET-style rectifier/regulators available for a wide variety of vehicles and are always improving and expanding our product line to provide you with the best possible options for keeping your bike running in prime condition.

This diagram shows a MOSFET with no applied voltage to the gate:

As you can see, there is no channel between the source and drain. Once a positive voltage is applied to the gate, however, it will act on the p-n junctions surrounding the source and drain regions to create a conducting channel between them.


Now, there is a channel and charge carriers can move between the source and drain regions. As the applied voltage varies at the gate, the channel will respond in kind, which will either increase or decrease the ability of charge carriers to travel between the two n-type regions.

The increased efficiency of this mechanism as opposed to an always-on/always-off thyristor This mechanism is significantly more efficient in low-power circuits like the ones found on creates less heat due to less energy being lost, and also increases the overall performance of motorcycles and ATVs.

If you have any further questions please call us toll-free at 1-800-521- 0277 or email us at info@ricksmotorsportelectrics.com