Question about Nikon D200 DC Power

Discussion in 'Nikon' started by Rod Out back, Jan 26, 2008.

  1. Rod Out back

    Rod Out back Guest


    I've searched through the D200 manual, and then a few searches on the net, but I
    cant find out the answer to a few questions about powering the D200 from an
    external source. I wondered if anyone here might know.

    I am particularly interested in powering he camera from a DC source, as AC power
    to run the Nikon EH-6 AC adapter would be difficult. I do have an MB-200 battery
    grip, but I would prefer power available for longer than this.

    1). What is the voltage the camera expects at the D200 DC-in port? I'm assuming
    around 9v, but I cant seem to find out exactly what it is.

    2). Does anyone make a decent aftermarket Car cigarette lighter DC power
    adapter? I dont think Nikon do (That I could find, anyway).

    3). Does the external power source charge the internal battery(ies) when
    providing power to the camera? I assume not, but I wondered. I have had some
    cameras (My Sony digicam for one) that did charge the on-board battery when
    plugged into external power.

    Any ideas or info greatly appreciated.



    Rod...Out Back

    For a round-up of the pics I have taken the past 24 months,
    take a look at:

    Rod Out back, Jan 26, 2008
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  2. The simplest and cheapest route would be to buy the smallest AC power
    inverter you can find, usually a cigarette lighter sized unit of 100W to
    300W. You can power your AC adapter and charger with little drain on the
    12V source.

    Rita Berkowitz, Jan 26, 2008
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  3. Rod Out back

    Rod Out back Guest

    I'd prefer to not go the inverter route, as it increases the drain on the
    battery for the same output. If I'm simply stepping down from 12v to whatever
    the DC volts the D200 uses, this requires less load from the battery than an
    inverter would. As a result, the method of re-charging the external battery
    doesnt need to be as large.
    I'd also be concerned about how 'clean' the AC power from a beer-can inverter
    is, and I dont have the gear to check this. I would hate to bugger the camera
    or the DC power supply because of flakey power.
    Also, the inverter option means I have 2 pieces of electronics to supply power
    to the camera (Inverter + DC power supply). This adds to possible points of
    failure. If I am looking at a 12V DC adapter(if such a beast exists), it is a
    single unit to do the same thing. Bitter experience has taught me that Murphy's
    laws are usually pretty entrenched when you live a long way from civilisation...

    Surely, someone makes a 12v - Nikon DC-in converter! I cant be the first person
    to want this sort of power option, and I see Nikon even make car DC cables for
    some models of Coolpix cameras.

    Thanks for the ideas, though.


    Rod Out back, Jan 27, 2008
  4. Well, I felt the same way about the mini inverters as you, but it's really
    not a problem. Most of them crappy inverters put out a square wave that is
    semi clean. Plus, the Nikon power supply and battery chargers are switching
    power supplies that can work at 200+VAC and are well regulated and filtered.
    They can handle any garbage you throw at them and still pass a relatively
    clean DC signal.
    No, but most people don't want to pay the ridiculously high price Nikon
    would charge for it. If you know your way around a power supply with a
    soldering iron you could crack open what you have now and you *MIGHT* be
    able to feed a 12VDC line past the DC output of the switching supply and the
    regulators will handle the rest.

    Me, I'm too damn lazy and went with the inverter.
    Just kicking a few option out there for ya.

    Rita Berkowitz, Jan 27, 2008
  5. Rod Out back

    me Guest
    me, Jan 27, 2008
  6. Rod Out back

    proulxcurry Guest
    proulxcurry, Jan 27, 2008
  7. Rod Out back

    Paul Furman Guest

    I didn't get why he backed down on the project? 13.5V .3A can't be got
    out of a 12v supply?

    Anyways I use a larger inverter (4"x7"x1") for charging & various things
    in my camper van. I got a second battery which is I think called a deep
    cycle type, designed to be fully drained & still charge up fine. The
    only problem with the inverter is it has a noisy fan. It has a fuse &
    will shut down if you try to run something too powerful or when the
    battery dies down. Time lapse bulb exposures are really tough on the
    regular camera battery, that will only go about 40 minutes on a charge
    so this would be handy.
    Paul Furman, Jan 27, 2008
  8. It's easy... you just use an inverter.

    Hence buying a commercially available inverter that goes
    to 120 VAC and can power the regular AC power supply is
    a lot easier than designing not only an inverter but
    also an AC power supply. Probably a lot cheaper too.

    We see a lot of comments that the cost of the Nikon
    supply is high because it says "Nikon" on it side, and
    while that may in fact be partially true, it is also
    true that the DC power to the camera has rather steep
    specifications, and the reliability of the Nikon product
    very good. Hence I don't think it makes a lot of sense
    to avoid the Nikon AC supply.
    Good information, and that is indeed the "right" way,
    for the "right" reasons!
    Floyd L. Davidson, Jan 27, 2008
  9. Rita Berkowitz, Jan 27, 2008
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