|
Posted by on March 29, 2006, 11:57 am
Please log in for more thread options
People on this group seem to have a lot of experience with stuff like
this, so I though I'd ask...
I'm going to buy a DC-to-AC inverter to run a small blower off a 12
volt battery, along with one or two other small motors occasionally.
It's all light-duty stuff -- no more than a single ~1/8 horsepower
motor at a time (but they will go for up to 8 hours or so).
I really don't know much about these inverters. Is there a particular
brand any one would recommend? Are some are particularly inefficient,
or have other problems I should watch out for?
Thanks,
~Jeff Polaski
|
|
Posted by jerry wass on March 29, 2006, 2:26 pm
Please log in for more thread options
jpolaski@rgs.uci.edu wrote:
> People on this group seem to have a lot of experience with stuff like
> this, so I though I'd ask...
>
> I'm going to buy a DC-to-AC inverter to run a small blower off a 12
> volt battery, along with one or two other small motors occasionally.
> It's all light-duty stuff -- no more than a single ~1/8 horsepower
> motor at a time (but they will go for up to 8 hours or so).
>
> I really don't know much about these inverters. Is there a particular
> brand any one would recommend? Are some are particularly inefficient,
> or have other problems I should watch out for?
>
> Thanks,
>
> ~Jeff PolaskiI
If you're going to run an electric motor, I'd get one 2 to 3 times the
load of the motor.--blower = long slow start, high current draw, and
bad power factor.
>
|
|
Posted by wayne mak on March 29, 2006, 4:15 pm
Please log in for more thread options I have run the blower for my coal stove from a 200 watt inverter for hours
with no issues, sure beat the sound (and gas) of the generator, I just start
the car and let it run for 10 minutes every 4 hours or so. Seems to work
fine, I am warm, the guy next door is cold but not pissed about the niise
next door.
> jpolaski@rgs.uci.edu wrote:
>
>> People on this group seem to have a lot of experience with stuff like
>> this, so I though I'd ask...
>>
>> I'm going to buy a DC-to-AC inverter to run a small blower off a 12
>> volt battery, along with one or two other small motors occasionally.
>> It's all light-duty stuff -- no more than a single ~1/8 horsepower
>> motor at a time (but they will go for up to 8 hours or so).
>>
>> I really don't know much about these inverters. Is there a particular
>> brand any one would recommend? Are some are particularly inefficient,
>> or have other problems I should watch out for?
>>
>> Thanks, ~Jeff PolaskiI
>
> If you're going to run an electric motor, I'd get one 2 to 3 times the
> load of the motor.--blower = long slow start, high current draw, and
> bad power factor.
>>
|
|
Posted by RAM³ on March 29, 2006, 2:55 pm
Please log in for more thread options > People on this group seem to have a lot of experience with stuff like
> this, so I though I'd ask...
>
> I'm going to buy a DC-to-AC inverter to run a small blower off a 12
> volt battery, along with one or two other small motors occasionally.
> It's all light-duty stuff -- no more than a single ~1/8 horsepower
> motor at a time (but they will go for up to 8 hours or so).
>
> I really don't know much about these inverters. Is there a particular
> brand any one would recommend? Are some are particularly inefficient,
> or have other problems I should watch out for?
>
You'll probably need to have more than 1 battery for a prolonged draw.
[Motors tend to use "a bit" more current than expected - especially the
smaller ones.]
You might consider getting 4 6V golf cart batteries and run them in
series-parallel to provide the requisite amount of current.
Don't forget that there will be ~10X the current drawn from the 12V source
as used by the 120V load.
|
|
Posted by RoyJ on March 29, 2006, 6:39 pm
Please log in for more thread options Some of the cheap inverters have a wave form that is a really bad
version of a sine wave. This makes no difference to the average 120 volt
motor (synchronous or brushed) or lights but can play hob with computer
power supples.
Most of the small inverters can take some overload so if you size the
inverter for 50% to 75% of your continuous load, you should have no
problems. This assumes you are talking about a 3.3" form factor
(diameter) motor. If you were trying to start a bigger motor eg 1/3 hp,
you will need much more reserve capacity.
A single 1/8 hp motor will take a theoretical 93 watts, figure 120 watts
minimum for a real world motor. 10 amps out from your motor means 11 to
12 amps input to the inverter from your battery. This will kill a
standard car battery in the 4 to 6 hour range.
jpolaski@rgs.uci.edu wrote:
> People on this group seem to have a lot of experience with stuff like
> this, so I though I'd ask...
>
> I'm going to buy a DC-to-AC inverter to run a small blower off a 12
> volt battery, along with one or two other small motors occasionally.
> It's all light-duty stuff -- no more than a single ~1/8 horsepower
> motor at a time (but they will go for up to 8 hours or so).
>
> I really don't know much about these inverters. Is there a particular
> brand any one would recommend? Are some are particularly inefficient,
> or have other problems I should watch out for?
>
> Thanks,
>
> ~Jeff Polaski
>
|
| Similar Threads | Posted | | New (to me) Forney inverter welder | December 22, 2006, 10:32 am |
| is it possible to use AC motor with inverter in 4Q mode? | May 1, 2006, 6:05 pm |
| Tig Squarewave Inverter Revisted | March 14, 2008, 10:00 pm |
| source for solid state inverter? | January 16, 2007, 9:41 pm |
| OT? armature question (rotary inverter) | July 22, 2007, 1:08 am |
| 110vt Inverter Stick welder wanted | January 30, 2007, 7:33 am |
| Backup inverter Neutral-ground convention? | January 7, 2008, 4:10 pm |
| Re: 240V-> 110V transformer - lighter with inverter techn? | June 26, 2007, 1:56 pm |
| OT: automotive follow-through | February 12, 2008, 10:14 am |
| Automotive question | September 18, 2008, 2:11 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap
> this, so I though I'd ask...
>
> I'm going to buy a DC-to-AC inverter to run a small blower off a 12
> volt battery, along with one or two other small motors occasionally.
> It's all light-duty stuff -- no more than a single ~1/8 horsepower
> motor at a time (but they will go for up to 8 hours or so).
>
> I really don't know much about these inverters. Is there a particular
> brand any one would recommend? Are some are particularly inefficient,
> or have other problems I should watch out for?
>
> Thanks,
>
> ~Jeff PolaskiI