Jump to content


Photo

Powering the Arri 2C with a power supply


  • Please log in to reply
6 replies to this topic

#1 Jonathan Bel

Jonathan Bel
  • Basic Members
  • PipPip
  • 32 posts
  • Director

Posted 20 September 2011 - 04:54 AM

Yes it's me again with my Arri 2C.

So I just looked into a 0-30v variable 5 amp DC power supply. My motor is a 16-24v CRA-6A Xtal cine products crystal, 2 amp.

Anyway, what it boils down to here is finding a way to connect the XLR cable to the power supply. It's a 3 pin.

Here are some pictures. Any bright minds?

Attached Images

  • ~NC3MX-BAG.jpg
  • $(KGrHqIOKosE33NmFvoWBOHz)hGQQ!~~_12.jpg

  • 0

#2 Chris Millar

Chris Millar
  • Basic Members
  • PipPipPipPip
  • 1642 posts
  • Other

Posted 20 September 2011 - 05:27 AM

What part of the process are you weary of ?

Do you know the pin out of that male XLR ?

You know those desktop supplies are real heavy huh ? Also not the most rugged of equipment...
  • 0

#3 John Sprung

John Sprung
  • Sustaining Members
  • 4635 posts
  • Other

Posted 20 September 2011 - 01:44 PM

Three pin XLR is non-standard for power, and somewhat dangerous, because three pin is used for microphones. 12 Volts DC is more than enough to fry a dynamic mike. The standard is 4 pin XLR, with negative on 1 and positive on 4. 2 and 3 were used in the old days for 60 Hz sync pulse and bloop. As for powering a II-C, an ordinary car battery charger from AutoZone or Kragen or the like should be plenty good enough, and dirt cheap.




-- J.S.
  • 0

#4 Chris Millar

Chris Millar
  • Basic Members
  • PipPipPipPip
  • 1642 posts
  • Other

Posted 20 September 2011 - 02:42 PM

hmmm,

Wont a car charger be about 13.6 Volts ? - that cinema products motor needs apparently needs 16-24 Volts ...


  • 0

#5 Jonathan Bel

Jonathan Bel
  • Basic Members
  • PipPip
  • 32 posts
  • Director

Posted 20 September 2011 - 03:49 PM

The 3 pin XlR I have has a variable speed controller box linked in the middle and then it plugs into my motor. The XLR usually plugs into my 18vdc battery belt. Is there any pigtail adapter I can get for this?

If I get a connector like this, wire the positive/negative and link to power supply? will that work?




hmmm,

Wont a car charger be about 13.6 Volts ? - that cinema products motor needs apparently needs 16-24 Volts ...

Attached Images

  • NC3FX-B.jpg
  • PowerDCProbe_350.png

  • 0

#6 John Sprung

John Sprung
  • Sustaining Members
  • 4635 posts
  • Other

Posted 20 September 2011 - 04:31 PM

hmmm,

Wont a car charger be about 13.6 Volts ? - that cinema products motor needs apparently needs 16-24 Volts ...


The one I have measured something like 16 - 18 volts.




-- J.S.
  • 0

#7 Chris Millar

Chris Millar
  • Basic Members
  • PipPipPipPip
  • 1642 posts
  • Other

Posted 20 September 2011 - 04:54 PM

The 3 pin XlR I have has a variable speed controller box linked in the middle and then it plugs into my motor. The XLR usually plugs into my 18vdc battery belt. Is there any pigtail adapter I can get for this?

If I get a connector like this, wire the positive/negative and link to power supply? will that work?


Hmmm,

Don't take this the wrong way - I'd hope youd give the same advice to me - but if this stuff isn't simple to you then best you get it done by someone who knows...

If the unit doesn't have reverse input protection you could fry it... Super worst case scenario is a fire :o
  • 0


Visual Products

Glidecam

Tai Audio

Wooden Camera

Media Blackout - Custom Cables and AKS

Opal

Technodolly

CineLab

Aerial Filmworks

Broadcast Solutions Inc

The Slider

Gamma Ray Digital Inc

Rig Wheels Passport

FJS International, LLC

Ritter Battery

Abel Cine

Paralinx LLC

Metropolis Post

rebotnix Technologies

Willys Widgets

CineTape

Broadcast Solutions Inc

Tai Audio

Gamma Ray Digital Inc

Technodolly

Abel Cine

Ritter Battery

Metropolis Post

Media Blackout - Custom Cables and AKS

The Slider

Opal

Willys Widgets

CineTape

Paralinx LLC

Wooden Camera

Rig Wheels Passport

Glidecam

rebotnix Technologies

Aerial Filmworks

FJS International, LLC

CineLab

Visual Products