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Old 02-15-2008, 08:51 PM   #557 (permalink)
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Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

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90 day: 55.97 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

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Anybody know anything about DC/DC converters? We picked up a VICOR 48v to 15v for 20 bucks on eBay last fall, but haven't installed it yet.

We've just been recharging the aux 12v battery individually. But I completely drained the 12v with the headlights the other night, and I didn't have a patch wire with me to tap the pack and get the lights back on. I ended up driving a few blocks (on deserted streets) with no lights or signals.

So... I'm motivated to get the DC-DC hooked up!

According to

Our VI-232-02 is a...

Nominal: 48v
Input range, full power: 42-60v
Max power, >5v output: 100w
Low line 75% max power: 36v
Transient voltage for 1 sec: 72v
Output voltage: 15v

The Vicor PDF for the 200 series converters doesn't actually list this specific model.

I'm not sure what Gate IN/OUT is, but I'm assuming I hook pack +/- to IN +/-. I also assume I can trim the output voltage if I want to, but if I don't can I just hook OUT +/- to the 12v battery? Can I switch the unit and turn it on/off as desired? Where should I fuse it?
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown

has launched a forum for the efficient new Mitsubishi Mirage - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
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