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  • Drok
    Keymaster
    May 29, 2018 at 8:16 am
    Post count: 2971
    in reply to: Buck converter not down-regulating #29806

    Hello Adam，
    Please kindly confirm if it is this item. 200310
    Could you please tell us more details about operation? When you press up or down button, can you change the voltage value? Or does it just show 48V no mater how did you press button?  Did you lock the button by mistake?
    It will be more helpful if you can take a short video or some images. Then we can check problem more carefully. You can share us YouTube video or send it directly to our service email(service@droking.com)
    Best regards.

    Drok
    Keymaster
    May 29, 2018 at 3:18 am
    Post count: 2971
    in reply to: DROK 0.28" High Accuracy Voltage Ammeter #29805

    Hello  Jim Knierien,

    Are you talking about the above item? 300006

    As the picture shows, is that the white plastic you mean?

     

    Drok
    Keymaster
    May 28, 2018 at 3:56 am
    Post count: 2971
    in reply to: Digital timer. #29801

    Hello James Morrell,

    Thanks for writing in.

    We have many kinds of timers. Would you please let us know which one it is? The instruciton should have  a sku number. Please kindly send us that number.

    Best regards.

    Drok
    Keymaster
    May 27, 2018 at 9:21 am
    Post count: 2971
    in reply to: Using voltmeter/ammeter LED panel as voltmeter only #29799

    Hello Kris,

    We don’t have this kind of meter . All of shunts must be connected in the negative side.

    Best regards.

    Drok
    Keymaster
    May 25, 2018 at 9:37 am
    Post count: 2971
    in reply to: Using voltmeter/ammeter LED panel as voltmeter only #29796

    Hello Kris,
    This meter has common-ground design that the ground of measuring terminal is interlinked with the ground of power supply.
    So A+ can be only connected between the negative poles of load and power supply. Otherwise the meter will burnt out.
    Best regards.

    Drok
    Keymaster
    May 25, 2018 at 9:17 am
    Post count: 2971
    in reply to: Drok 10-100v Programmable Battery Meter #29795

    Dear Gilbert Hernandez,
    According to the information you offer,the ASIN number of item should be B07759SLYP.
    Here is the instruction B07759SLYP instruction
    Any more questions, please let us know.
    Best regards.

    Drok
    Keymaster
    May 22, 2018 at 9:21 am
    Post count: 2971
    in reply to: 122405 Data Sheet #29791

    Hello Justin Puent,
    As this item is semi-finished module, we are sorry our factory doesn’t have paper instruction for it.
    Here is a simple instruction we make for you. 090183
    Best regards.

    Drok
    Keymaster
    May 21, 2018 at 7:39 am
    Post count: 2971
    in reply to: Using voltmeter/ammeter LED panel as voltmeter only #29786

    Hello Kris,
    Thanks for writing in.
    If the meter is just used as voltmeter, you can hook it up like that.
    But for measuring current, no matter how large the current is, the 50A meter must be connected wtih shunt, otherwise, the meter will burn out.
    Best regards.

    • This reply was modified 7 years, 10 months ago by  Drok.
    Drok
    Keymaster
    May 13, 2018 at 10:05 am
    Post count: 2971
    in reply to: 12v timer #29739

    Hello chris ，
    Thanks for writing.
    It is hard to confirm the item you mean. Would you please kindly send us the product link for confirmation?
    Best regards.

    Drok
    Keymaster
    May 13, 2018 at 10:02 am
    Post count: 2971
    in reply to: Buck converter 0 amps output #29738

    Hello,
    But you told us the on-board fuse has blown before. Did you replace it?
    Best regards.

    Drok
    Keymaster
    May 13, 2018 at 6:55 am
    Post count: 2971
    in reply to: Where is the switch on the switching power supply? #29737

    Dear Mark Ditzler,
    As the following picture showed, the switch is on the circuit board. You can use screwdriver to toggle switch without open the case
    2001712002
    Best regards.

    Drok
    Keymaster
    May 11, 2018 at 10:09 am
    Post count: 2971
    in reply to: Where is the switch on the switching power supply? #29731

    Hello Mark Ditzler,
    Thanks for writing in.
    Would you please firstly let us know which switching poewr supply you mean?
    Please kindly send us the product link or ASIN number for confirmation?
    Best regards.

    Drok
    Keymaster
    May 10, 2018 at 4:12 am
    Post count: 2971
    in reply to: YB4835VA 50A DC volt/amp meter panel – shunt required? #29724

    Hello Kris,
    Please kindly notice this item has 20A specification. https://www.amazon.com/DROK-Multimeter-Three-Digit-Voltmeter-Three-wire/dp/B01M7R7JPJ/?th=1
    So if you buy one with over 20A range,shunt is necessary.
    Best regards.

    • This reply was modified 7 years, 10 months ago by  Drok.
    Drok
    Keymaster
    May 9, 2018 at 10:09 am
    Post count: 2971
    in reply to: YB4835VA 50A DC volt/amp meter panel – shunt required? #29714

    Dear Kris,
    Thanks for your reply.
    Actually YB4835VA is not a reference part number，so we can’t confirm item with it.
    About the meter you bought, no matter how large the current is, it must be connected with shunt.
    Best regards.

    Drok
    Keymaster
    May 9, 2018 at 10:02 am
    Post count: 2971
    in reply to: Buck converter 0 amps output #29713

    Dear Paul，
    We are sorry so far we don;t have overseas maintenance station， it is not workable to send back for repair.
    In general, burning fuse is caused by large current(over 17A), is the power suppy the same as before?
    If you can, would you please kindly tell us more details through email?
    Best regards.

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