Topic: External power for SD 7xx

[waltmon]

Would the 10-14-88 LI pack be ok for external power with the 744T and the dummy cell dealio?    Where does one find a dumby cell?

[johnw]

I bought my dummy cell off Ebay. It is part of a charger package for sony camcorders. I'm not sure the battery geek would work since it appears to be no less than 10V and the 722 takes 7.2V. It would probably run fine as an external battery using a hirose connection though.

[manitouman]

Got my dummy cell all rigged up so I thought I'd share some pics. Ed from Kind Kables hooked me up with the Ultra Stealth mic cables and matched the dummy cell with the appropriate sheathing to compliment the cables. I like it! 

Still haven't checked to see how long it will power the 702 because of technical difficulties but like most have suggested it would probably power for about 10 hours. I did have it connected to the 702 and was working fine.

[waltmon]

  Any one know who carries Hirose connectors?

[fozzy]

either of these should work

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=HR1582-ND

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=HR1558-ND

Really any of these should work

http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=1441934;keywords=7p-4p%20HR10

[waltmon]

This may be a dumb question...are there male and female Hirose connectors?

[fozzy]

This may be a dumb question...are there male and female Hirose connectors?

yes

7p-4p is 7diameter, 4 pin, plug (cable end)
7p-4s is 7 diameter, 4 pin, jack (722 end)

http://www.hirose.co.jp/cataloge_hp/e11000216.pdf

[mozmoz8]

Looking at the jack of the 722 face on, which pin is 1 and 4?

[H₂O]

Looking at the jack of the 722 face on, which pin is 1 and 4?

They are labeled you just need to look very hard. 

The actual Hirose connector is easier to read.

[F.O.Bean]

John, FWIW, I just made another dummy cell thing. I put a 4-pin on the end of mny dummy cell just like I did the one I gave to tonedeaf The white stripe is POSITIVE and the one w/ writing is NEGATIVE. if using a 4-pin, use the 12v wiring scheme. That would be Pin 4=HOT and Pin 1=NEGATIVE

I'll snap some pics if ANYONE IS INTERESTED

[dactylus]

John, FWIW, I just made another dummy cell thing. I put a 4-pin on the end of mny dummy cell just like I did the one I gave to tonedeaf The white stripe is POSITIVE and the one w/ writing is NEGATIVE. if using a 4-pin, use the 12v wiring scheme. That would be Pin 4=HOT and Pin 1=NEGATIVE

I'll snap some pics if ANYONE IS INTERESTED

Yes, pix please.

 

[F.O.Bean]

John, FWIW, I just made another dummy cell thing. I put a 4-pin on the end of mny dummy cell just like I did the one I gave to tonedeaf The white stripe is POSITIVE and the one w/ writing is NEGATIVE. if using a 4-pin, use the 12v wiring scheme. That would be Pin 4=HOT and Pin 1=NEGATIVE

I'll snap some pics if ANYONE IS INTERESTED

Yes, pix please.

 

D'oh! I still havent found my USB cable for my digi cam

I'll do a thorough search today tho

This one came out SWEEEEEEET! It has a ton of 3:1 heatshrink for strain relief, and even has the 3mm heatshrink on the solder joints I made it at like 3am last nite Im very proud of this one! Right now im running battery runtimes w/ MBHO>MIC IN>Phantom ON>24/48>headphones ON>Writing to JUST the CF Card Id LOVE to get 8 hrs or so Next I need to get a 32GB RiData cf card to go along w/ my 8GB RiData Pro cf card, and here I come festie season

[stevetoney]

John, FWIW, I just made another dummy cell thing. I put a 4-pin on the end of mny dummy cell just like I did the one I gave to tonedeaf The white stripe is POSITIVE and the one w/ writing is NEGATIVE. if using a 4-pin, use the 12v wiring scheme. That would be Pin 4=HOT and Pin 1=NEGATIVE

I'll snap some pics if ANYONE IS INTERESTED

Hey Bean.  I still have that cable...it's awesome. 

My project for today and tomorrow is to rig it up with a dummy M series battery that I'll be able to use with my Sony video camera...with this cable I'll be able to run the camera for DAYS off the RC batteries.  What I'm gonna try to do is put a connector in between the L-series dummy cell that's currently installed so that I can swap between the M-series dummy and the L-series cell.  I have a dead M-series battery that I'm gonna disassemble and use for the M-series dummy cell.  Moke posted some pictures a long time ago (maybe in the remote power forum...or maybe it was even earlier in this thread???) that showed how he has done this in the past.  I'll let you know how it works out.

[bl6216@yahoo.com]

If I was i would put the battery in your bag that dose not go on with you. There don't look in them just the one that go on with you.

[johnw]

John, FWIW, I just made another dummy cell thing. I put a 4-pin on the end of mny dummy cell just like I did the one I gave to tonedeaf The white stripe is POSITIVE and the one w/ writing is NEGATIVE. if using a 4-pin, use the 12v wiring scheme. That would be Pin 4=HOT and Pin 1=NEGATIVE

I'll snap some pics if ANYONE IS INTERESTED

Thanks Bean!