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MOSFET 20 Amp Voltage Regulator/Rectifier

MOSFET 20 Amp Voltage Regulator/Rectifier

by Tri-Spark
$209.63 - $209.63
$209.63
$209.63 - $209.63
$209.63

The Ultimate Charging Upgrade for Classic British Motorcycles

Upgrade your classic British motorcycle’s charging system with modern solid-state technology. This heavy-duty MOSFET regulator/rectifier replaces outdated zener diode and plate rectifier systems with a single, highly efficient unit. Enjoy accurate voltage regulation, improved charging performance and significantly less heat, for a more reliable electrical system and longer battery life.

Product Description

MOSFET Regulator/Rectifier

Upgrade your classic motorcycle's charging system with modern solid-state technology. This heavy-duty MOSFET regulator/rectifier replaces the traditional zener diode and separate plate rectifier with a single, efficient unit that provides accurate voltage regulation with much less heat.

Conventional diode regulators can dissipate more than 20 watts as heat under normal charging conditions. The MOSFET design used in the Tri-Spark unit operates much more efficiently and runs significantly cooler, making it suitable for installation in confined spaces such as under a seat or behind a side panel.

Key Features

  • 20-amp capacity: Rated at 20 amps, providing ample capacity for common 10A, 14.5A and 16A stators.
  • Efficient and compact: The 80 x 67 x 20 mm housing runs cool and can be fitted in a range of locations where space is limited.
  • Long heavy-gauge wiring: Supplied with 60 cm of heavy-gauge wiring in dual protective sleeving, allowing plenty of flexibility when routing the wiring.
  • Universal polarity: Suitable for both positive and negative earth/ground electrical systems.
  • 2-year warranty: Supplied with detailed wiring and installation instructions and backed by a 2-year warranty.

Compatibility

The Tri-Spark MOSFET regulator/rectifier is suitable for 12-volt permanent-magnet alternators using either a single-phase (2-wire) or three-phase (3-wire) stator, with an output of up to 20 amps.

It is suitable for many of the Lucas charging systems used on classic Triumph, Norton, BSA, Royal Enfield, Matchless and other British motorcycles, including:

  • RM21 – 10-amp single phase
  • RM23 – 16-amp single phase
  • RM24 – 14.5-amp three phase

Dimensions and Mounting

  • Body size: 80 x 67 x 20 mm
  • Mounting hole centres: 64 mm
  • Wiring length: 60 cm

Installation and Frequently Asked Questions

Positive or Negative Earth?

The Tri-Spark MOSFET regulator/rectifier works with both positive and negative earth/ground electrical systems. There is no need to select a different unit when converting a motorcycle from positive to negative earth.

What if my stator has two wires?

The regulator/rectifier can be used with both two-wire single-phase and three-wire three-phase stators.

When used with a two-wire stator, leave the yellow wire disconnected. Trim the unused wire to a suitable length and seal the end with heat-shrink tubing.

The regulator automatically operates correctly with the two active stator wires.

Always refer to the supplied wiring instructions for your particular motorcycle before connecting the unit.

Testing and Installation Video

Watch the video above to see the Tri-Spark MOSFET regulator/rectifier tested against a conventional diode regulator. The test demonstrates the difference in power dissipation and operating temperature between the two designs.

Specifications

VR-0030

  • Size is 80 x 67 x 20 mm.
  • Mounting hole centres 64mm.
  • 20 amp rating
  • 60 cm long wire.

Instructions and Guides

MOSFET 20 Amp Voltage Regulator Instructions

Troubleshooting Guide Lucas Alternator

Shipping Taxes and Payments

Shipping 

We will send your order with Australia Post unless otherwise arranged

  • Within Australia - STANDARD post 2-6 business days. (Estimated 2-5 business days for same state delivery and interstate capital cities, except WA and NT.
  • Within Australia - EXPRESS post 1-5 business days. (Estimated 1-2 business days for same state delivery and interstate capital cities, except WA and NT.
  • International - Australia Post STANDARD airmail service. Delivery in 6-17 business days. (Estimated 6-17 business days for metro to metro delivery. Items sent to regional and rural locations may take longer.)
  • International - Australia Post EXPRESS airmail service. Delivery in 5-12 business days. (Estimated 5-12 business days for metro to metro delivery. Items sent to regional and rural locations may take longer.)

For Australia Post's international delivery times and destination guide click here

We provide Australia Post with your mobile phone number and email address, where applicable.  Australia Post will use this information to communicate with you regarding your delivery from us.  This may be in the form of SMS or email notification.  

Postage Calculator

You can calculate the postage in the view cart area.   Click on 'Calculate Shipping' and enter your details.

International Orders -Taxes, Customs and Duty

Orders shipped outside Australia may be subject to customs duties, taxes, or import charges. These costs are set by your local authorities and vary from country to country.

International orders (excluding the USA):

We DO NOT collect customs duties or taxes at checkout.

  • If charges apply, they will be collected by your local customs office or postal service when your order arrives.
  • Please check with your local post office or customs authority to understand what cost may apply.

For USA customers:

Where applicable, duties and tariffs that we are required to collect for US shipments are included in the price shown at checkout.

Payment Options and Advice

We offer a variety of secure payment methods to make your checkout experience easy and convenient.

Accepted Payment Methods

  • All Major Credit Cards – Shop and pay in your own currency with Visa, MasterCard, American Express, and more.

  • PayPal – Available to customers paying in Australian and USA Dollars.

  • Bank Deposit – Available to Australian customers only. Our bank details will be provided on the next page after you select this option at checkout.

  • Shop Pay – A fast and secure checkout option.

  • Google Pay (G Pay) – Quick checkout using your saved Google account details.

Note: If you do not want your payment information saved for future purchases, please remember to untick the box that says ‘Save my information for faster checkout’.  Leaving this box ticked may impact saved payment information with other online shops.

Express Checkout Options

For a faster checkout, you can use:

  • Shop Pay
  • PayPal
  • G Pay

If you already have an account with any of these services and your details are up to date, your checkout will be streamlined.

Currency

When using any major credit card, you can shop and pay in your own local currency, making your purchase experience seamless no matter where you are in the world.

If you have any questions about payments or need assistance, feel free to contact us – we’re here to help!

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