Question about Pentax Cameras

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What polarity is the pentax L30's dc jack? - Pentax Cameras

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  • craquer69 Oct 10, 2008

    the DC jack on the side of the camera is polarity dependant i am replacing the power supply/battery charger i need to know the correct polarity. ie centre pin positive or negative

  • craquer69 Oct 11, 2008

    inner positive outer negative

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3 Answers

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Internal pin is for + volts and external is for - volts

Posted on Oct 10, 2008

  • Shahid Electronics
    Shahid Electronics Oct 10, 2008

    Center pin is positive and outer ring is negative.



  • Shahid Electronics
    Shahid Electronics Oct 10, 2008

    hope you received solution email.

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Hi, Normally all chargers have correct polarity. Neways,
Check this picture of the power plug.
http://www.coding4fun.net/images/ComputerControlledRCCarwithCamera_525E/CIMG01904.jpg

The outer metal surface is negative and the inner (hole) is positive. So, now you know which part (in your camera socket) is positive and negative.

:)

Posted on Oct 10, 2008

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Please mention some more details about the problem.to make it clear and explainable.
reply.

Posted on Oct 10, 2008

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  • mastermind10 Oct 10, 2008

    The interchangeable
    DC plugs included are for center plus and polarity
    protection. Any setting of the output voltage
    selector switch is protected against unintentional
    change of voltage. A power on LED and 2 rubber
    grips for easy handling rounds off the high
    specification of a neat, compact and easy to carry
    power supply for worldwide use. Output voltage in
    6 fixed steps 2.4v, 3v, 4.2v, 5v, 6v, 6.5v, 7v,
    8.4V to match the voltage specifically needed for
    most digital cameras. 5 inter changeable centre
    plus and polarity protected DC plugs included.
    (Plug dimensions 1.7 x 4.75 / 1.7 x 4 / 1.4 x 3.5
    / 0.75 x 2.4 / 5.5 x 2.1 all right angled plugs).

  • mastermind10 Oct 10, 2008


    Congratulations on your purchase of the Sima SUP-2 Universal Power Adapter. It

    can power digital cameras and other portable electronic devices requiring 3.3 / 4.2 / 5.0

    / 6.5 / 8.4 or 9.5V DC power. The SUP-2 can also provide power for other devices. It is

    fully regulated using high efficiency switching technology and features overload and

    short circuit protection. The SUP-2 comes with seven connectors to fit different digital

    cameras and other electronic devices. Additional connectors are available from Sima.

    This package Includes:

    1 AC adapter 7 Center pin positive connectors

    1 12V car lighter cord 1 SUP-2 This Manual

    Operation

    1. Set the output voltage switch, as illustrated in Fig. 1, to

    the desired output for your device. Choose from the

    following settings: 3.3 / 4.2 / 5.0 / 6.5 / 8.4 or 9.5 V.

    The SUP-2 comes with seven standard connectors. The

    connectors allow you to match the size and polarity of

    your device’s DC input jack. If your device requires other

    types of connectors, contact Sima customer service at

    800-345-7462.

    The connectors supplied with the SUP-2 are all set in a

    center pin positive alignment ( Fig. A) If your device

    requires a center pin negative power source (Fig. B)

    do not use this adapter.
    To determine the required

    current and correct polarity for your device, refer to the

    manufacturer’s instruction manual or specifications

    2. Select the appropriate connector and attach it to the output socket at the end of the

    output cord. The connectors are numbered as follows: 1, 2, 4, 5, 13, 14 & 17. To

    identify the correct connector for your camera, see the list of digital cameras on the

    reverse side of this sheet. If unsure, use the connector that fits the power jack of

    your camera. The three-pin connectors are designed to fit into

    the socket in only one position. Align the pins as shown at

    right in Fig. 2. Do not force.

    3. Insert the connector into the power jack on your portable device.

    4. Plug either the AC adapter or the car cigarette lighter cord

    into the SUP-2’s input power jack located at the top of the

    unit. Note: Do not plug the AC adapter or car cord

    directly into anything except the SUP-2.
    Next, plug the

    AC adapter (or car cord) into a standard AC wall outlet (or

    car lighter). The red power light on the SUP-2 should turn

    on. You can now operate your device.

    IMPORTANT:
    Your portable device must be rated between 3 - 10V DC and no more

    than 2100 mA of current to use the SUP-2. If the exact voltage for your device is not

    listed below and is less than 10V, you can try setting the voltage switch to the

    nearest voltage – use the lower setting first. If the device does not operate, disconnect

    the connector from the device, reset the voltage switch to the next higher setting

    and re-connect. Do not continue trying higher settings as they may result in

    damage to your device or the adapter.

    The SUP-2’s current (mA) must be equal to or greater than the current your portable

    device requires. Remember 1A = 1000mA, 0.5A = 500mA. Use the following chart

    to determine the output current from the SUP-2:

    Output Max. Output Max.

    Voltage Current Voltage Current

    3.3V = 2.1A 6.5V = 1.7A

    4.2V = 2.0A 8.4V = 1.6A

    5.0V = 1.9 A 9.5V = 1.5A

    Resetting the Adapter

    CAUTION
    : If the power light turns off, check the power source. If on, the output current may be

    beyond the AC adapter’s specifications and the overload protection has been activated.

    To reset the adapter:

    1. Disconnect the AC adapter from the AC outlet and the device you are powering. Wait 10 seconds.

    2. Plug the AC adapter into the AC outlet again. If the indicator remains off, there may be a problem

  • mastermind10 Oct 10, 2008

    please check out this link for more better help as this includes the diagrams of the sides which negative and which positive and how to take care of your deviice to avoid further problems

    http://www.simaproducts.com/support/file...



    just click the above link and the page will display on your screen.



    thanks.

    for any thing else feel free to comment.

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