Hi Don,
On the *istDS, the camera itself is labeled as to what polarity the power
connector has. The center pin is clearly marked as being positive. The
voltage of 6.5 Vdc is also clearly marked on the camera. (Only the amperage
specification is missing from the camera body.)
Please, let everyone know how well the lead-acid gel cell works with your
camera. I've been thinking of making a similar battery pack for my *istDS,
for those occasions where I might need extended shooting capacity on remote
locations. Sealed gel cells are cheap, and their charge should last far
longer than NiMH AA cells, provided you select one with a suitable amp-hour
rating.
take care,
Glen
At 08:08 AM 10/27/2005, Rob Studdert wrote:
On 27 Oct 2005 at 15:02, Don Williams wrote:
> Hi Cory,
>
> While we're still on the power supply
> matter can you tell me which is positive
> (+) on the AC mains adapter plug? The
> outside or the pin. I'm making up a lead
> with spades on one end and a concentric
> plug on the other to use a 6V 8AH lead
> acid gel accumulator when the camera is
> on the microscope, or when cleaning the
> sensor. I'm guessing it's the pin -- but
> I have a small flash here that has
> things the other way round.
Not Cory but this is the inforamtion that I posted earlier this year:
D-AC10
Input: 100-240v - 50/60Hz 800mA
Output: 6.5VDC 3000mA
From what I have determined the power connector on the *ist D is an EIAJ DC
plug with 4.75mmOD and 1.7mm ID configured for positive on the centre pin.
Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
UTC(GMT) +10 Hours
[EMAIL PROTECTED]
http://members.ozemail.com.au/~distudio/publications/
Pentax user since 1986, PDMLer since 1998
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