Regler

Hrvatski

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The entire electronic system of the motorcycle (battery, lights, starter, etc.) is based on direct current (DC), so it is necessary to transform three-phase alternating current (voltage) from the generator to direct current, and for this the regulator/rectifier (abbreviated: regler or only R/R for short) is used.
 

In fact, the regler combines two electronic circuits/functionalities within the same electronic device. The first is a rectifier that converts alternating current to direct current (voltage). It has 6 diodes (two per phase) that pass current only in one direction (full phase rectification). The second part is the regulator that makes sure that the output voltage level does not exceed an upper voltage threshold of 14,6V in order to protect the battery from overvoltage and consequent damage.

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xv125-xv250

Part	Code	Production	Models
R/R	47X-81960-A1	1988-1990	xv125,xv250
	3DM-81960-00	1991-1997	xv125,xv250
	3DM-81960-01	1998-2018	xv125,xv250

regulator/rectifier 47X-81960-A1
(SH569-12)

regulator/rectifier 3DM-81960-01-00
(SH661-12)

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xv400-xv1100

Part	Code	Production	Models
R/R	42X-81960-A0	1987-1991	xv535,xv750,xv1000,xv1100
	42X-81960-A1	1992-1996	xv400,xv500,xv535,xv700,xv750,xv1000,xv1100
	3JB-81960-01	1997-2001	xv500,xv535
	3LP-81960-01	1998-2000	xv750,xv1100

regulator/rectifier (R/R) 42X-81960-A1

regulator/rectifier with cooler (R/R) 3JB-81960-01

regulator/rectifier 3LP-81960-01

 

Three white (sometimes yellow) wires with alternate voltage from stator go to regler. Output from regler is one red wire (positive pole of regulator) while negative pole is metal regler housing itself and it is mounted on (and electrically connected to) motorcycle construction (or there is a black ground wire).

This device gives to motorcycle the power of cca 250W (from 220W to 280W depending on speed).

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Diode (Shunt) and MOSFET regulators/rectifiers

As for the internal construction, there are regulators built with diodes and others that use MOSFET transistors. Yamaha Virago uses older regler type that shunt (lead to ground) current when the voltage exceeds the threshold level to protect the battery. The main difference between these two types is the speed of switching and as a consequence - heat production. The diode regulator has slower switching circuits and requires more energy, produces a lot of heat and the voltage varies more. The more sophisticated MOSFET controller switches extremely fast and requires much less control energy resulting in a cooler unit and more stable voltage.

Diode (shunt) regulator/rectifier

MOSFET regulator/rectifier

Note: This device outputs electrical power of about 250 W (from 220 W to 280 W depending on speed). It supplies motorcycles' electrical devices and charges battery in the same time. The engine in idle mode does not produce enough power for all components (ignition, lights) and charging the battery. So, in idle mode more power is spent than produced for charging. For normal charging the motorcycle driving is required.

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Burned regler