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02-27-2012, 05:30 AM | #1 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Alternative to Voltage Converter?
My neighbor emailed this to me late last night, so I'm just looking at it this morning. Admittedly, my coffee hasn't kicked in yet, but I can't find anything wrong with it.
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02-27-2012, 10:35 AM | #2 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Alternative to Voltage Converter?
The output voltage will be a bit higher since 6V batteries are 6.37V at full charge (or 11.54V out) and don't get down to 6.05 until they are at 50% Soc.
I'd probably use 4 x 1N1184 and 4 x 1N1184R stud mount power rectifiers on two heavy gauge aluminum heat sinks, electrically isolated from each other and the cart frame. 1N1184's and their anode stud counterparts are 35A each and there are 4 in parallel, so you could power more audio than us old guys can tolerate and maybe install some HID headlights. The set-up has the potential for some serious arc welding, so it isn't a project for a novice, and I'd probably add a few fuses to keep from burning the posts of the batteries in case something went terribly wrong. Might give new meaning to having a Sparky type cart. |
02-27-2012, 11:14 AM | #3 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: Alternative to Voltage Converter?
Thanks. I'll have to dig through my semiconductor drawer to see what I already have on hand. I agree with your comment on fusing, and would fuse each connection, if I decide to go this route. I was aware he was wrong on the voltages, and the stereo is the only load I have that would care, and I can test that out pretty easily.
Last weekend I sketched up how I want to power my gadgts and dug through my terminal strip to see what I had. I had planned on using a voltage converter and a marine grade fuse block, and was looking for locations to mount them. I would have to mount the voltage converter either under my charging jack, if it would fit, or under the rear seat. If this works, it would simplify things, and I'd probably reuse my 40 amp four pole relay, controlled by the keyswitch. |
02-27-2012, 11:22 AM | #4 |
Let's go racin' boyz!!
Join Date: Oct 2010
Location: Springdale, AR
Posts: 4,156
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Re: Alternative to Voltage Converter?
Dude, you have a semiconductor drawer?
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02-27-2012, 12:07 PM | #5 |
Gone Wild
Join Date: Aug 2011
Location: Bunnell, Florida
Posts: 2,408
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Re: Alternative to Voltage Converter?
Isn't the output voltage ( 12V ) going to fluctuate with the soc of the battery pack? I mean would it still remain in useable limits for 12V accessories provided you remain in the 100 - 70% soc?
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02-27-2012, 05:46 PM | #6 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: Alternative to Voltage Converter?
It wouldn't be any worse than when I did this, with the added losses through the diodes.
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02-27-2012, 05:48 PM | #7 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: Alternative to Voltage Converter?
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02-27-2012, 06:10 PM | #8 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Alternative to Voltage Converter?
Quote:
I'm not up to speed on the audio amps on the market theses days, but all I see is the possibility of some clipping and the bass getting muddy when the volume is cranked up. Back off on the volume and it'll probably sound just fine. FWIW: I used to run a mobile CB with a picture of a snake on it and some strange transistors in it, as a base station using a home brew power supply that only put out 11.5V (@ 30A) and it did okay. |
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02-27-2012, 06:12 PM | #9 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Alternative to Voltage Converter?
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02-27-2012, 06:24 PM | #10 | |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: Alternative to Voltage Converter?
Quote:
I struck out on finding enough matching rectifiers. Here's the biggest semiconductor I have. If they still come after my drawers, I can always use this on 'em. |
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