Headlight Booster

Want more JUICE out of your stock headlight, and do not want to modify your existing wiring. Click to learn more.

HID charging conversion

Are you tired of Battery depletion everytime you uses your newly installed High Intensity Discharge Headlight, Click for solutions.

Fixing OIL drain plug thread

Are you looking for fixing that oil drain plug that went bad and unable to thread that bolt due to loose thread, Here is an easy solution for, CLICK for detais.

Led Light Solution

Wanting to conserve battery power of your motorcycle? Why not change all of your indicator BULBS, such as signal light, tail light and brake light to LED BULBS. Click for more info.


CDI is the heart of your ignition, wanting more power than STOCK but do not want to buy such RACING CDI? You need to know how it work first to understand where to START improving the ignition. Click for more.

Horn Interrupter

Want to have a horn sounds like a machine gun that produces successive sound with only one press of the HORN switch, add spice to that annoying stock horn, CLICK for details.

Reusable OIL filter mod

Paper element OIL filter tends to suffer from clogging, so why not try this filter mod I am using with my small motorcycle for more OIL flow.

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Last Updated: November 03, 2010

Single phase voltage regulator (full wave)

Here is another voltage regulator for motorcycle design to be used on single phase stator.
This is the simplest full wave design commonly used on almost all commuter bikes  with 4 pin connector. Do not be mistaken with the half wave versions, for this one cannot be used on half wave stator design to which the other end of the windings is directly connected to ground. Again this is for a  FULL WAVE converted stator design and modifications.
By looking at the schematic, and comparing it to my previous post of voltage regulators, it is almost identical, with the design, and only component values are different. C1, R1, Q1, D1, and R3 compromising the sensing and regulating circuit, whereas D2,D3, Q2 and Q3 are the shunting components of the stator winding.

D4 to D7 are your rectifiers that converts the AC coming from the stator to DC for charging your battery. With the values as shown, the output of this regulator is 14.4 at 5000rpm. You can modify this circuit for your intended application, to output 15 volts rather than 14.4 for quick charging of your battery when there are too much load on your system, by altering D1, to 13 volts rather than 12.6 volts..
This system is Stator dependent...meaning, this can't output more power on what your stator can give, all charging system power rely on your stator max output...

Part list

R1= 3.3k ohms
R2= 1 k ohms
R3= 1.5k ohms
R4= 100 ohms
Q1= 2n5401
C1= 10uf / 25volts
D1= 12.6 volts zener / 1 watt
D2 /D3= 1n4007
SCR1 /SCR2= bt151-500 or bt151-600
D4-D7= bridge rated 100v 10A