Project DIY best series regulator/rectifier comparable to Shindengen SH775

From idea to realization

It's hard to find a serious regulator/rectifier manufacturer that will offer a quality DIY series motorcycle regulator project. We are seriously considering offering a do-it-yourself nonprofit project for everyone.

The reason is that there really are no such projects. There are some schemes that can be found on the Internet. Their main disadvantages are that they are poorly designed to withstand critical situations, poor voltage retention, use of electrolytic capacitors, difficult accurate voltage adjustment, high idle current consumption, etc. The goal is promotion, but also cooperation, on which our civilization rests.

The project they would offer is a simplified version of the serial regulator we produced 17 years ago. It would have the following characteristics:

- voltage from the stator: up to 110VAC

- consumption current: less than 160uA (1.3Ah/year)

- regulated voltage from 13.8 to 14.8V adjustable

- insensitivity to increased battery voltage up to 100V

- start operation if the battery voltage is higher than approx. 9V

- regulation to minimum or medium voltage (two connection versions)

- temperature stability: -5mV/°C or -0.7mV/°C

- LED signaling: flashing or normal (not required for operation)

- LED signaling of stator breakdown on the housing when the regulator is connected

- LED signaling of the reached voltage

- resistance to the exchange of plus and minus polarity

- surge protection for input AC voltage 180Vp

- single-phase or three-phase version up to 8000rpm

- without electrolytic capacitors

- without overheating protection

- the control electronics must not be heated above 85°C

- a rectifier of typically three diodes for plus and three thyristors for minus

- thyristors are mounted without insulation, and diodes should have insulation

- the possibility of using an additional wire for voltage measurements and switching on

- the possibility of easy connection of the output for an external LED diode (additional small circuit)

- in the event of a stator breakdown on the housing, the output voltage will not be controlled! The LED will then light up when the regulator is energized and the motor is not running.

The difference in the sold product:

- consumption current: less than 68uA (0.6Ah/year)

- protection against overheating above 70°C

- high temperature stability

- LED standard

- regulated voltage fixed

- quality filled with polyurethane in a robust heat sink

- start operation if the battery voltage is higher than 6.2V

- voltage from the stator: 100 or 200 VAC

Commercial use of the project is prohibited without permission. For the commercial use or modification of our scheme, it is necessary to agree on the terms of cooperation. For non-profit use, the mark "(C) SPER Zagreb" must be visibly displayed on the regulator and documentation.

So, the project we offer is our simplified earlier product that was practically tested 17 years ago. I believe it surpasses other professional replacement regulators in many features. This announcement is intended as a notice of intent. If you are really interested in a quality DIY series-type regulator for charging a motorcycle, please contact me by e-mail with the subject "Best series DIY RR" and write what you think about the project?

To begin with, they would offer an electrical schematic, and later perhaps a blueprint of a printed circuit board for the control electronics and perhaps a kit version (if there will be demand and profitability). We will not offer and provide upgrades of the DIY project to features that our commercial product has.

Do-it-yourself regulation electronics are usable for several types of stators: single-phase, three-phase and double single-phase (3 wires, one common) and stator voltages up to 110VAC.

Do-it-yourself regulator, with a suitable cooler and good moisture insulation, could be a good and safe replacement for the currently overpriced and hard-to-find Shindengen SH775.

Used parts are easily found at electronic component suppliers. You can choose diodes and thyristors yourself (max 30mA gate trigger current). You only need to take care that the resistance of the thyristor to dU/dt should be 1000V/us.

⦁ Advantages of the series regulator

⦁ Comparison of 3F HVSP regulator with Shindengen SH847

⦁ What to do when the voltage regulator on a motorcycle often burns out?

⦁ What to do when the stator on a motorcycle often burns out?

⦁ Control of the charging voltage of the 12V battery

⦁ Instructions for a quick solution to too low battery voltage