Groups > sci.electronics.design > #460452

Re: What maximum power inverter for car?

From	Don Y <blockedofcourse@foo.invalid>
Newsgroups	sci.electronics.design
Subject	Re: What maximum power inverter for car?
Date	2017-05-15 18:10 -0700
Organization	A noiseless patient Spider
Message-ID	<ofdjb1$3t6$1@dont-email.me> (permalink)
References	<b2e24c21-5934-4111-ac97-2ef1d4df4aca@googlegroups.com> <Cr-dnUXoeKsPZYTEnZ2dnUU7-e2dnZ2d@giganews.com> <4a9c7572-526a-4687-bd66-2eea9c3036dc@googlegroups.com> <ofd5is$r16$2@dont-email.me> <ofdhbn$t5u$3@dont-email.me>

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On 5/15/2017 5:34 PM, mike wrote:
> On 5/15/2017 2:15 PM, Don Y wrote:
>> On 5/15/2017 1:00 PM, edward.ming.lee@gmail.com wrote:
>>> Good question.  Knew someone would ask.  Running a 1200W food warmer
>>> for an
>>> hour, until i can hook it up to the engine heat/cool system.  Might
>>> not need
>>> 1000W, but at least 700W to 800W.
>>>
>>> Might be easier just to hook up a bank of batteries.
>>
>> Or, a small propane powered genset.
>
> Or a propane powered heater.

I suspect the "food warmer" has mechanical constraints related
to *food* warming.  :>

> Or a 12V battery powered heater.

12V into a heater just eliminates the inefficiency of the inverter.
But, you still need 80A from that battery.  (hence my suggestion to
use a *second* battery that you treat sacrificially; stealing *some*
power from the alternator but EXPECTING to deplete the battery
over the course of the "food warming time")

> Watts is watts.  No need to crank the volts up to run
> a resistor.
> Start with warm food and good insulation.

I think the problem lies with the period over which it
might want to be kept warm (warm enough to serve at an
enjoyable temperature?).  If you're hoping to set up a
"taco wagon" you'd have different concerns than if
you're just trying to keep something warm on the drive
to Grandma's house.

A neighbor built a "food vending van" and relied on
a genset located in a rear compartment (no path for
fumes to enter the van) for all his power needs.
But, his intent was only to power things while PARKED
(not while riding down the road).

Thread

What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-15 08:14 -0700
  Re: What maximum power inverter for car? "Carl Ijames" <carl.ijamesDDD@EEEverizon.net> - 2017-05-15 12:29 -0400
    Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-15 10:02 -0700
      Re: What maximum power inverter for car? Tim Wescott <seemywebsite@myfooter.really> - 2017-05-15 12:43 -0500
      Re: What maximum power inverter for car? bloggs.fredbloggs.fred@gmail.com - 2017-05-15 10:59 -0700
      Re: What maximum power inverter for car? "Carl Ijames" <carl.ijamesDDD@EEEverizon.net> - 2017-05-15 14:18 -0400
    Re: What maximum power inverter for car? oldschool@tubes.com - 2017-05-15 14:01 -0400
      Re: What maximum power inverter for car? Don Y <blockedofcourse@foo.invalid> - 2017-05-15 14:14 -0700
  Re: What maximum power inverter for car? tabbypurr@gmail.com - 2017-05-15 10:38 -0700
    Re: What maximum power inverter for car? Tim Wescott <seemywebsite@myfooter.really> - 2017-05-15 13:10 -0500
      Re: What maximum power inverter for car? tabbypurr@gmail.com - 2017-05-15 12:56 -0700
  Re: What maximum power inverter for car? Jon Elson <jmelson@wustl.edu> - 2017-05-15 13:53 -0500
    Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-15 13:00 -0700
      Re: What maximum power inverter for car? "Carl Ijames" <carl.ijamesDDD@EEEverizon.net> - 2017-05-15 17:09 -0400
      Re: What maximum power inverter for car? Don Y <blockedofcourse@foo.invalid> - 2017-05-15 14:15 -0700
        Re: What maximum power inverter for car? mike <ham789@netzero.net> - 2017-05-15 17:34 -0700
          Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-15 17:41 -0700
            Re: What maximum power inverter for car? Don Y <blockedofcourse@foo.invalid> - 2017-05-15 18:14 -0700
              Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-15 19:34 -0700
          Re: What maximum power inverter for car? Don Y <blockedofcourse@foo.invalid> - 2017-05-15 18:10 -0700
      Re: What maximum power inverter for car? Jon Elson <jmelson@wustl.edu> - 2017-05-15 16:28 -0500
      Re: What maximum power inverter for car? tabbypurr@gmail.com - 2017-05-15 15:43 -0700
        Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-15 17:44 -0700
          Re: What maximum power inverter for car? tabbypurr@gmail.com - 2017-05-15 17:59 -0700
            Re: What maximum power inverter for car? Chris Jones <lugnut808@spam.yahoo.com> - 2017-05-16 21:40 +1000
              Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-16 08:03 -0700
                Re: What maximum power inverter for car? tabbypurr@gmail.com - 2017-05-16 09:08 -0700
                Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-16 09:19 -0700
                Re: What maximum power inverter for car? tabbypurr@gmail.com - 2017-05-16 09:36 -0700
                Re: What maximum power inverter for car? Jon Elson <jmelson@wustl.edu> - 2017-05-16 13:34 -0500
                Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-16 12:52 -0700
                Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-16 13:27 -0700
                Re: What maximum power inverter for car? Ralph Barone <ralph@invalid.com> - 2017-05-17 02:26 +0000
                Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-16 21:50 -0700
                Re: What maximum power inverter for car? "Carl Ijames" <carl.ijamesDDD@EEEverizon.net> - 2017-05-17 10:46 -0400
                Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-17 22:31 -0700
                Re: What maximum power inverter for car? "Carl Ijames" <carl.ijamesDDD@EEEverizon.net> - 2017-05-18 10:26 -0400
                Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-18 08:23 -0700
                Re: What maximum power inverter for car? Jon Elson <jmelson@wustl.edu> - 2017-05-17 13:59 -0500
                Re: What maximum power inverter for car? Ralph Barone <ralph@invalid.com> - 2017-05-18 01:02 +0000
                Re: What maximum power inverter for car? "Carl Ijames" <carl.ijamesDDD@EEEverizon.net> - 2017-05-16 15:34 -0400
                Re: What maximum power inverter for car? mike <ham789@netzero.net> - 2017-05-16 15:48 -0700
                Re: What maximum power inverter for car? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-05-16 13:05 -0400
                Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-16 11:12 -0700
      Re: What maximum power inverter for car? Jasen Betts <jasen@xnet.co.nz> - 2017-05-23 07:02 +0000
        Re: What maximum power inverter for car? edward.ming.lee@gmail.com - 2017-05-23 07:29 -0700
  Re: What maximum power inverter for car? Don Y <blockedofcourse@foo.invalid> - 2017-05-15 14:09 -0700
  Re: What maximum power inverter for car? Jasen Betts <jasen@xnet.co.nz> - 2017-05-23 06:43 +0000
    Re: What maximum power inverter for car? Neon John <no@never.com> - 2017-05-27 12:49 -0400

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