Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.electronics.design > #460433
| From | Don Y <blockedofcourse@foo.invalid> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: What maximum power inverter for car? |
| Date | 2017-05-15 14:14 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <ofd5hk$r16$1@dont-email.me> (permalink) |
| References | <b2e24c21-5934-4111-ac97-2ef1d4df4aca@googlegroups.com> <ofcl1n020om@news7.newsguy.com> <uoojhchhs7drbk60eeim47v1a5a28uhti8@4ax.com> |
On 5/15/2017 11:01 AM, oldschool@tubes.com wrote:
> I'm curious. How do you know the amperage needed to run that inverter?
Power = Amps * Volts
With all things consumer, there's a bit of tongue inserted in cheek.
I.e., they may assume your battery is at 14.4V instead of *9* (which
is where it will be when the engine is cranking). And, may simply
indicate the *rating* of the components used inside -- I've got a
2200VA UPS plugged into a 15A mains circuit (clearly the branch
circuit won't be able to supply that 2200VA!)
> (Or any inverter). For example, I have a 300W inverter that plugs into
> the cig lighter in a car. I dont know how much amps it draws, but it has
> to be less than 20A, because cig lighters are usually fused at 20A or
> less. I use this inverter mostly for a laptop computer, so I can use the
> laptop at WIFI spots from inside the car. I know the laptop dont need
> the full 300W, but it still uses some power. I have run that inverter
Laptop is probably 40-60W. I have a portable inverter for emergency use
that is wired directly to the *battery*, with its own internal fuse.
> for as much as 6 hours, without running the car engine. Only once did I
> drain the battery enough that the car would not start, but that was over
> 6 hours use on a weak battery, and with the dome light turned on most of
> the time too. (I had the battery tested after that, and it needed to be
> replaced).
>
> I have a friend who bought an older Ford van, which came with a camper
> package, including a TV, VCR, and a built in 1200W inverter. The van's
> altternator was 140A. For some reason that alternator or the regulator
> kept failing, and he said it cost a fortune to repair. He said he did
> not need or use the inverter, so he disconnected it. He dont use a VCR,
> and the analog TV is worthless without a converter box for on the air
> tv. Anyhow, after spending lots of money on alternator repairs, he
> changed it to a standard 60 or 65A Chevy alt with built in regulator.
> (That took a little modification of the brackets).
Often, all you have to do is replace the diode trio ("bridge") inside
the alternator. Usually a handful of dollars and 10 minutes of
your time (given that you have to plan on removing and reinstalling
*an* alternator, regardless).
> He has not had any problems since. Aside from a few extra (dome) lights
> in the rear, it's just a basic vehicle now, without the inverter and
> tv/vcr. So he dont need all that extra amperage.
Back to sci.electronics.design | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll 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
csiph-web