AC vs DC question...  By  carasdad (Read 1,464 times)

All your lights are DC, the leds will work in the instrument panel.
Alleyoop

The flywheel to the stator is AC which goes to the regulator the regulator transfers it into DC current to your bike.

Alley said your lights run off DC above.

Seems odd though as they have a dedicated + and - pole. So does the LED just use half of the alternating current it is fed? As if they are 1/2 wave?

LED's light up when power passes in one direction.
In AC you have both. The doide will use half of it.
But little cheap scooters use a half wave regulation system. Which means half of the ac wave is shunted to ground all the time. So on a scooters lighting system called AC it is not . It is pulsing DC. So if you connect a LED and it doesn't light, reverse the leads.



Try to measure it with a meter set to AC rms and it won't show the correct value.

prodigit..tx...I thought about that...a trip to radio shack for parts to make a bridge rectifier if needed. But!! Went to radio shack a few months ago to buy a #7805 5V voltage regulator to make a cell phone charger for my scoot.Gone are the times their employees knew electronics.. cause he did not know what it was or how to find it. So I asked to use his PC and found the part number for him... www.radioshack.com/product/index.jsp?productId=2062599 He said well maybe I can order that part number. I said screw it..went to Autozone and bought a cig lighter socket and USB plug to stick in it. So now I have a 12v power source and USB cell phone charger. Not sure what I would ever use the 12v socket..doubt the amperage would run a 12v impact wrench.

But thought I would check here first as the Jonway Hornet has lots of screws and fasteners to get the front cowl off..then about 12 screws(hard to get at) to remove the speedo. It's like major surgery man.
chihuahuas..ah ok so it is 1/2 wave...kewl.I figured if it was and if the bulbs did not work..they would have to be turned. So apparently the 2 T's are 1/2 wave like the GY6 50?...
Thanks to all..and hope all don't have the same prob we have...5 scoots..4 GY6 50 (80BBK) and 1 2T Minarelli BKK Hornet. Every one of them the instrument panel bulbs are so dim ya can't see the gauges at night...and the one 'Barney Fife' local Officer is a stickler for scoots only going 30mph. Mine hits 56-57mph..so when I slow down coming into town it's hard to judge speed. Kinda like when we pull off the interstate and drive in a town..we keep looking at the speedo..cause 30 seems like we are going 15 or so.. ;D

Here is the speedo. Front has 4 phillips screws for the 'fake' carbon fiber bezel. Under that there are 6 screws that hold the lens in place..and what a PIA...as they are not phillips...they are * head shape so I had to buy a special screwdriver cause they are tight and a flat blade Jewelers screwdriver just rounded them out. the digital clock/calendar is kewl...and only loses 15 minutes each day....so 3 times a year the time is right on. Come on China..ya gotta have better technology than that... the reason the U.S. went to Quartz for Time Pieces was because no matter what the voltage...the Quartz oscillates at the same frequency. So maybe they don't use Quartz...or if they do..possibly the rest of the circuitry involved is junk..like 10% or worse Resistors...wrong uF Capacitors or whatever diode they can buy at 100 for a dollar. Anyway..it does not work well...but it sure looks cool..
The 3 arrows show where the 194 bulbs are...even at high speed they are dim and poorly placed..or there should be 5 vs 3 maybe. I used GE bulbs 12v 5w 'Super Bright'..more like super dim. My buddies 1w LED 194 bulbs are so bright..you can't look at them directly...and for 99 cents each on Ebay.......anything has to be better.