Lens Diaries Go Now
Glamour, Beauty, Nude, Models, Photographers

*    |  Register  


 
Go Back   Garage Glamour™ > Garage Glamour™ Main Forums > Tech Talk Forum
 

Tech Talk Forum Photography & Technical Related Only!

Reply
 
LinkBack Thread Tools Display Modes
Power Inverter question....
Old 05-15-2007, 05:40 PM   #1 (permalink)
Free Member

 
Kejacobson's Avatar
 
Join Date: Aug 2006
Member GG#: 54142
Location: Holiday Island
Posts: 82
Comments: 0

Kejacobson is offline IP: 70.178.181.63
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

Hey all...hopefully you can help me. I own several AB lights and am looking to use them outdors without a 2000 ft extension cord. I know AB sells the vagabond systems ($400) so that you can. My question is...on Ebay I have seen power inverters ($60) that plug into a car's cigarette lighter and convert to household power. Is this something that I could use to power my AB's. Obviously, I would still need to have my truck somewhat close to the shoot...but that is easier than moving my house. Any thoughts would be greatly appreciated.

Thanks,

KJ
  View Public Profile Send a private message to Kejacobson Visit Kejacobson's homepage! Find More Posts by Kejacobson
 
Re: Power Inverter question....
Old 05-15-2007, 06:09 PM   #2 (permalink)
Lifetime Photographer

 
RobArtLyn's Avatar
 
Join Date: Oct 2006
Member GG#: 55042
Location: Alexandria
Posts: 415
Comments: 0
My Mood:

RobArtLyn is offline IP: 138.88.157.80
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

You need a pure sine wave inverter to use with your strobes. Most (if not all) cheap inverters do not produce a pure sine wave and will damage your strobes in short order. The inverter that AB includes in their Vagabond system is made by Samlex. You could buy one of theirs separately or another brand and connect it to your truck if you want.
  View Public Profile Send a private message to RobArtLyn Find More Posts by RobArtLyn
 
Re: Power Inverter question....
Old 05-15-2007, 06:13 PM   #3 (permalink)
Lifetime Photographer

 
n5wd's Avatar
 
Join Date: Nov 2003
Member GG#: 37369
Location: Fort Worth, Texas
Posts: 637
Comments: 0

n5wd is offline IP: 68.113.221.108
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

Quote:
Originally Posted by Kejacobson View Post
...on Ebay I have seen power inverters ($60) that plug into a car's cigarette lighter and convert to household power. Is this something that I could use to power my AB's.

Yes, but... You have to be very careful when shopping for inverters because there are two kinds, and the ABs (as will most electronics) don't tolerate one kind very well.

A power inverter converts direct current into alternating current... usually converting 13.8v (nominal) into 110v AC. The AC component is normally a pure sine wave, if you look at the voltage coming out of your wall socket. But, inverters often approximate the smooth transitions of the AC cycle by stepping through the various voltages. This can cause problems with electronics because that method develops extra signals called harmonics.

A light bulb could care less whether you're feeding it pure sine wave AC or stepped voltages.. but your strobes are different - they want to see pure sine wave.

So, as long as you're careful to purchase inverters which produce pure sine wave AC, then the inverter is a good choice for portable power. The pure sine wave inverters will probably cost you a bit more than the cheap imports, but they'll be worth it to you if you're feeding the voltage into electronics, as opposed to light bulbs and/or power tools, etc.


That help?
__________________
Wayne
RWD Photography
  View Public Profile Send a private message to n5wd Visit n5wd's homepage! Find More Posts by n5wd
 
Re: Power Inverter question....
Old 05-15-2007, 07:18 PM   #4 (permalink)
Free Member

 
Kejacobson's Avatar
 
Join Date: Aug 2006
Member GG#: 54142
Location: Holiday Island
Posts: 82
Comments: 0

Kejacobson is offline IP: 70.178.181.63
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

Thank you very much for the replies. I did not know that and am glad to be told what to do. Follow up question...I found some of the samlex pure sinewave inverters on ebay (about doulbe the price). What I am curious about now..is there a certain wattage I would need? I have 2 ab 400's and 1 ab800.

Thanks,

KJ
  View Public Profile Send a private message to Kejacobson Visit Kejacobson's homepage! Find More Posts by Kejacobson
 
Re: Power Inverter question....
Old 05-15-2007, 08:23 PM   #5 (permalink)
Free Member
 
Join Date: Mar 2007
Member GG#: 57919
Location: LA
Posts: 581
Comments: 1

kgphoto is offline IP: 69.235.181.155
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

They need to produce enough amps to power the strobes. They can trickle charge the capacitors, but you will wait a long time between charges. What are the amp requirements of the Alien Bee's?

100 watts equals 1 amp as a rule of thumb, not an accurate number.
  View Public Profile Send a private message to kgphoto Find More Posts by kgphoto
 
Re: Power Inverter question....
Old 05-15-2007, 08:38 PM   #6 (permalink)
Lifetime Photographer

 
RobArtLyn's Avatar
 
Join Date: Oct 2006
Member GG#: 55042
Location: Alexandria
Posts: 415
Comments: 0
My Mood:

RobArtLyn is offline IP: 138.88.157.80
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

The unit that comes with the Vagabond is 150W, so that is your minimum and can handle your three lights. Don't expect really fast recycle times if you need full power shots. Interestingly, AB offers a second 150W unit, connected to the same battery, instead of a 300W unit as an upgrade to improve recycling times when using multiple flash units.
  View Public Profile Send a private message to RobArtLyn Find More Posts by RobArtLyn
 
Re: Power Inverter question....
Old 05-15-2007, 08:39 PM   #7 (permalink)
Free Member

 
Kejacobson's Avatar
 
Join Date: Aug 2006
Member GG#: 54142
Location: Holiday Island
Posts: 82
Comments: 0

Kejacobson is offline IP: 70.178.181.63
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

Here is the link to the one I am curious about. It looks very similar to the AB's one..but of couse different model numbers and such.


http://www.samlexamerica.com/product...roductsID=7013
  View Public Profile Send a private message to Kejacobson Visit Kejacobson's homepage! Find More Posts by Kejacobson
 
Make your own Vagabond
Old 05-15-2007, 08:49 PM   #8 (permalink)
Lifetime Photographer

 
RobArtLyn's Avatar
 
Join Date: Oct 2006
Member GG#: 55042
Location: Alexandria
Posts: 415
Comments: 0
My Mood:

RobArtLyn is offline IP: 138.88.157.80
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

If you don't want to be tied to your truck, you can make the equivalent of an AB Vagabond with greater capacity for less money. There has been a long, on again, off again thread on the specifics on dpreview since last year:

http://forums.dpreview.com/forums/re...ssage=21173329

You just need a 12V lead acid battery of whatever capacity you feel is appropriate for your needs, an inverter and something to put it all in.
  View Public Profile Send a private message to RobArtLyn Find More Posts by RobArtLyn
 
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Answer a Photo Question then leave a Photo Question? rolandogomez Main Community Forum 35 12-02-2007 07:00 PM
Answer to question on sensor size vs crop factor Brad Tech Talk Forum 17 01-02-2006 10:40 PM
Vagabond with other lights? SamBeasley Tech Talk Forum 7 08-29-2005 04:14 PM
is it possible? markomiscevic Tech Talk Forum 14 06-08-2005 09:02 PM
Power Inverter.... photoTexas Tech Talk Forum 10 10-14-2004 01:26 PM

Sponsors


New To Site? Need Help? Photographer & Model Links
All times are GMT -5. The time now is 06:31 AM.

© 1999-2017 Garage Glamour™




Search Engine Friendly URLs by vBSEO 3.2.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94