Rectifier

BelgiqueBasterd · Apr 18, 2008

When measuring the voltage with the bike idling I get about 6,5 dcV but also 2,5 acV, is this normal or is the rectifier broken?

The bike only has the rectifier/regulator, not the separate regulator or battery, only thing I power is the front and tail light.

ned37 · Apr 19, 2008

prolly depends on the meter you're using. most bike rectifiers aren't that efficient to get rid of all the ac component. but hopefully you can get more than 6.5 (6,5 or 6 5) dc out of it.

BelgiqueBasterd · Apr 19, 2008

Re: RE: Rectifier

ned37 said:
prolly depends on the meter you're using. most bike rectifiers aren't that efficient to get rid of all the ac component. but hopefully you can get more than 6.5 (6,5 or 6 5) dc out of it.

6,5 was when idling, blipped the throttle slightly and it went up to 8,5 so I'm guessing it will give me full 12v at higher rpm's.

So the Ac readings are acceptable? I messed up my led tail light due to wrong wiring and thus putting AC into my tail light, don't wan't to mess up my new one.

Neil_E. · Apr 19, 2008

RE: Re: RE: Rectifier

LEDs will operate fine on AC voltage. Note that your AC must be regulated so it does not exceed a specific value (let's say 15V peak). You will burn out filaments or LEDs if the voltage is too high. LEDs always require current limiting resistors for protection. A basic rectifier will convert your AC to DC, but does nothing else. Additional components must be added to limit the maximum voltage. These are often built into the rectifier housing so you don't know they exist. There are also different types of rectifiers.

Coastie · Apr 19, 2008

RE: Re: RE: Rectifier

Hi Belgique

Are you running the standard 02 setup or have you modified it?
If standard you should have 1 stator winding connected to a regulator and the other winding connected to a regulator/rectifier.
Both of these are mounted under the tank. The regulator only cct is AC and runs the head, tail and brake lights.
The reg/rectifier cct is DC and runs the indicators, horn and charges the battery.
I haven't tested mine but would think that you should have more than volts than that at idle.
As Neil E says, lights and/or LEDs will both work on AC or DC supply.

Coops

sparks · Apr 20, 2008

BelgiqueBasterd said:
When measuring the voltage with the bike idling I get about 6,5 dcV but also 2,5 acV, is this normal or is the rectifier broken?

The bike only has the rectifier/regulator, not the separate regulator or battery, only thing I power is the front and tail light.

Hi Christof,

If you are running a reg/rec then you will require some resistive load or capacitor to bring to voltage up and keep it stable. Are you actually running a battery?, if not then just a AC regulator will do.
If you want to use the full power potential of the Alternator then use the two Yellows and discard the Blue, this is how the KTM people do it.

Regards

Sparks.

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Rectifier

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