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Buell Forum » 1125R Superbike Board » Stator/Voltage Regulator/Charging System subforum » Archive through June 24, 2012 » Alternate VR... DC to DC converter « Previous Next »

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Reepicheep
Posted on Thursday, December 08, 2011 - 12:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I was looking for something else and stumbled on this today. No idea if its junk or what, or even if it would work, but I thought it might be food for thought.

http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem& item=120816835281

That isn't the one you need, but it might give some ideas... it is likely a true switching regulator.

From auction listing:
Specifications

Input Voltage: 24V nominal

Input range: 20V to 40V

Input Current: 30A (max)

No-load input current: ≤10mA

Output Voltage: DC 13.8V

Output Current: 30A

Ripple wave: 50Mv

Starting delay time: ≤ 2S

Maximum Efficiency: ≥90%

Insulation resistance: ≥20M Ω (between crust and earth, insulation resistance ≥20M Ω )

Dimension: 134mm*80mm*50mm

Weight: 800gs
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1125cr
Posted on Thursday, December 08, 2011 - 05:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I don't understand. What are you going to use a DC to DC regulator for? The voltage coming out of your stator is AC.
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Reepicheep
Posted on Thursday, December 08, 2011 - 06:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sorry, you are correct. You would need to put it though a full wave rectifier. But those are straightforward, that would be the easy part.

This is simply the closest device I have seen to the mythical "true switching regulator" for an 1125.

Not that it would work, but it's close. And not that I'm even convinced that a proper switching regulator is the solution to the problem. But it's an interesting possibility.
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Sparky
Posted on Friday, December 09, 2011 - 01:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

DC to DC converters are used extensively in spacecraft to boost the DC from solar panels to charge batteries and provide conditioned power for all the subsystems onboard. But that's just one component in a well designed power supply.
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