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  #13  
Old 11-01-2011, 10:09 PM
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Re: Power Outage - Jeep as Mini-Generator

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Originally Posted by ilber View Post
smart one I am in the same boat, this summer put generac 20kw standby with autoswitch and battery back up for 14sec of switching...


as far as jeep's inverter i don't recall exact spec, but i know it would not run my allienware laptop ( granted the power brick is like 250W)
150W. It might be fun to take a look at the thing and see whether something beefier can be inserted in its place.
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  #14  
Old 11-01-2011, 11:23 PM
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Re: Power Outage - Jeep as Mini-Generator

Get a Honda EU 2000i generator, or two of them and bridge them to run something heavy duty like a furnace blower motor. They're less than $900 if you shop around and there are tri-power conversions (voids the Honda warranty) available to enable switching from gasoline to propane or to natural gas with minimal fuss. The nice thing about the Honda EU generators is the pure sine wave inverters; you can run delicate electronics without fear of harming them. I've heard the output is cleaner than what we get from ComEd in my neck of the woods.

http://www.hondapowerequipment.com/p...elid=EU2000IKN
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  #15  
Old 11-02-2011, 01:04 AM
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Re: Power Outage - Jeep as Mini-Generator

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Originally Posted by Bmwister View Post
Get a Honda EU 2000i generator, or two of them and bridge them to run something heavy duty like a furnace blower motor. They're less than $900 if you shop around and there are tri-power conversions (voids the Honda warranty) available to enable switching from gasoline to propane or to natural gas with minimal fuss. The nice thing about the Honda EU generators is the pure sine wave inverters; you can run delicate electronics without fear of harming them. I've heard the output is cleaner than what we get from ComEd in my neck of the woods.

http://www.hondapowerequipment.com/p...elid=EU2000IKN
Neat stuff, although for most a boost to 250-500W via inverter is more than adequate. Inverters and non-pure-sine wave sources are okay with modern electronics.

While a non-squared sine waveform is the ideal, a rough approximation of a pure sine wave is far more widely used. Our firm switched over from pure sine wave backup to cheaper computer/generator backups years back with nary a trace of issue. A little wiggle from 60 Hz frequency is no big deal, either.
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Old 11-02-2011, 02:54 PM
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Re: Power Outage - Jeep as Mini-Generator

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Originally Posted by Lingohocken View Post
While a non-squared sine waveform is the ideal, a rough approximation of a pure sine wave is far more widely used. Our firm switched over from pure sine wave backup to cheaper computer/generator backups years back with nary a trace of issue. A little wiggle from 60 Hz frequency is no big deal, either.
Be very careful casually recommending modified sine wave inverters! I do NOT recommend modified sine wave inverters for computer equipment unless the manufacturer specifically indicates approval; not all electronics are equal.

Sensitive electronics like medical equipment do not run as efficiently and sometimes not at all on modified sine wave inverters (i.e. the kind you buy at Target, Walmart, etc. for $20-$100). A good pure sine wave inverter is typically closer to $300 and up. One of my customers lost tens of thousands of dollars of sensitive testing equipment by running those items off of a standard inverter in a field operation and greatly magnified the overall actual cost due to down time. Just my two cents.
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  #17  
Old 11-02-2011, 04:36 PM
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Re: Power Outage - Jeep as Mini-Generator

Devil's in the details. For ordinary PCs, laptop/tablet/phone chargers and such there is no practical difference between a perfect sine wave and the "good enough" variation. For field test gear, synchronous AC motors, certain analog electronics and the like, I won't argue the point. For starters, our contract testing lab in Denver uses only pure sine wave backups.

Today, consumer electronics are firewalled by sophisticated power supplies that are designed to handle all manner of power input variables. That's why nearly all consumer-grade power sources don't output as sine wave, and it works.
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  #18  
Old 11-03-2011, 10:09 AM
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Re: Power Outage - Jeep as Mini-Generator

Well, I managed to kill the battery the other day. After like 2-3 hours tapping into the Jeeps AC Adapter to power my laptop battery.

I did notice the laptop's AC brick was extremely HOT yesterday (while working from the public library) - so maybe the power draw was larger than I imagined, plus the extension was 100ft long, so more losses there too.

Anyway, the Jeep started the instant I jumped to my wife's Jeep. No complaints thereafter.

So, No more using the Jeep as my mini-generator

Still no power - since Saturday, and today is Thursday. UGH!! No power company trucks in sight, with trees/power lines STILL in the roadways!

This is getting really old - and COLD!! 45 deg inside this morning, 33 deg outside. Temps are supposed to cross 60 today, so, we'll be opening doors and windows in Nov to warm the house...
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Old 11-03-2011, 11:11 AM
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Re: Power Outage - Jeep as Mini-Generator

...and then there was LIGHT!

Thanks to the power crews from Illinois for getting us back online!

Furnace is cranking now. It is now 2 degrees warmer inside than outside...and climbing.

Whew, glad that's done!
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  #20  
Old 11-03-2011, 11:41 AM
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Re: Power Outage - Jeep as Mini-Generator

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Originally Posted by markp99 View Post
I did notice the laptop's AC brick was extremely HOT yesterday (while working from the public library) - so maybe the power draw was larger than I imagined, plus the extension was 100ft long, so more losses there too.
100 feet of extension cord shouldn't introduce significant loss for a laptop power supply. (And if it did, it would be warm to the touch.) But a hot AC brick is a bad thing for several reasons, not least of which is that it could further deteriorate and cause a fire. Consider replacing it.
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  #21  
Old 11-03-2011, 02:37 PM
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Re: Power Outage - Jeep as Mini-Generator

not arguing here, just worth mentioning. my latitude dell power supply will be perfectly fine, slightly warm, but if I have drained my battery, dock the computer the brick will get hot.... basically when i am running the system and recharging the battery the power brick chugs along but will be hot and cools to its normal "slightly warm" to the touch after battery has been recharged. On a flip side alien power cinderblock would be a hot plate with computer in a sleep mode....
Go figure
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  #22  
Old 11-04-2011, 07:58 AM
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Re: Power Outage - Jeep as Mini-Generator

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Originally Posted by ilber View Post
not arguing here, just worth mentioning. my latitude dell power supply will be perfectly fine, slightly warm, but if I have drained my battery, dock the computer the brick will get hot.... basically when i am running the system and recharging the battery the power brick chugs along but will be hot and cools to its normal "slightly warm" to the touch after battery has been recharged. On a flip side alien power cinderblock would be a hot plate with computer in a sleep mode....
Go figure
Off topic
If you use a Dell dock you should have a bigger PSU then the original one that came with the laptop.
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