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  • Drok
    Keymaster
    November 8, 2017 at 4:06 am
    Post count: 2971
    in reply to: 12 V Battery/Power Supply for DROK DC 0-120 V, 0-30 A, W/Relay #24463

    Hi Kirk,
    Are all of 3 items in the same circuit?
    Best regards.

    Drok
    Keymaster
    November 7, 2017 at 6:36 am
    Post count: 2971
    in reply to: Boost converter CV is not working when input is 12V #24441

    Hello Mustafa,
    Thanks for writing in.
    Would you please let us know details about your operation parameters?
    What is the corresponding input current and output current when you input 12V，24V and 38V respectively?
    Best regards.

    Drok
    Keymaster
    November 7, 2017 at 4:07 am
    Post count: 2971
    in reply to: constant current buck PWM not working right? #24439

    Hello Mustafa,
    Thanks for writing in.
    Would you please let us know if your input power is closed to the output power you want to set?
    When you input 12V，24V and 38V respectively, What is the corresponding input current and output current？
    Best regards.

    Drok
    Keymaster
    November 6, 2017 at 7:28 am
    Post count: 2971
    in reply to: Project box suggestio for DC Numerical Control Power Supply Voltage Regulator #24411

    Hi Paul Esslemont,
    Thanks for your writing in.
    The overall dimension for this item is 110*99*46mm. You can try to put it into box.But you need to make sure it has fully heat dissipation.
    Best regards.

    Drok
    Keymaster
    November 6, 2017 at 7:09 am
    Post count: 2971
    in reply to: Schematic for Buck Converter #24410

    Hello John,
    Thanks for writing in.
    We are sorry our technicians doesn’t allow to show schematic. Would you please tell us more detials about the problem? We will try our best to find solution for you.
    Best regards.

    Drok
    Keymaster
    November 6, 2017 at 6:52 am
    Post count: 2971
    in reply to: DC-DC Adjustable 3A Buck Voltage Converter #24409

    Hello Jeremy Yeak，
    Thanks for writing in.
    It’s regretted to hear that. To check what wrong is, would you please tell us more details about your operation? For example, what do you use it for? How did you set it before?
    It would be appreciate if you can take a short video to show us the problem.
    You can upload it on YouTube and then share us the link.
    With more information, we can find out problem more quickly.
    Best regards.

    Drok
    Keymaster
    November 6, 2017 at 6:42 am
    Post count: 2971
    in reply to: Smoked DC4-30V/5A Panel meter #24408

    Hi Urban HELLNER,
    Thanks for your reply.
    We have received your pictures, but it is not about the wiring.
    It’s hard for us to find out what problem is. Would you please kindly let us know more details about your wiring?
    And you mention you don’t use yellow wire, there should be something wrong.
    Best regards.

    Drok
    Keymaster
    November 5, 2017 at 6:35 am
    Post count: 2971
    in reply to: 12 V Battery/Power Supply for DROK DC 0-120 V, 0-30 A, W/Relay #24389

    Hello Kirk，
    Thanks for your reply.
    This item has a 12V relay, so it needs an external DC12V power supply. We are sorry we can’t ensure how long will a 12V battery last on this item. It is up to your operation. Regarding to your second question, would you please let us know what kind of 3 modules you mention? Do you mean you want to use one common power supply?
    Best regards.

    Drok
    Keymaster
    November 5, 2017 at 4:10 am
    Post count: 2971
    in reply to: Smoked DC4-30V/5A Panel meter #24386

    Hello Urban HELLNER，
    We are sorry to heat that. Firstly, would you please send us ASIN number or product link so that we can confirm the item you bought?
    And to check what wrong is, is it convenient for you to take some pictures to let us check the wiring? And what is your operation parameters? For example, input voltage/current.
    If you don’t know how upload pictures here, please try to send them to service@droking.com.
    We will try our best to help with you.
    Best regards.

    Drok
    Keymaster
    November 5, 2017 at 4:05 am
    Post count: 2971
    in reply to: Discontinued LCD step-down module? #24384

    Hello J Higgins,
    Thanks for writing in.
    It’s hard to find out the item with these description.
    If you bought it on Amazon, please can you offer your order ID so that we can confirm the item?
    Wait for your reply.
    Best regards.

    Drok
    Keymaster
    November 5, 2017 at 3:51 am
    Post count: 2971
    in reply to: DROK DC 12V Digital Timer Relay Board, Automotive 1500W Relay Module #24382

    Hello JOHN,
    Thanks for writing in.
    We are sorry we can’t reply to you on time. It’s glad you can figure out finally.
    For any more questions, please let us know.
    Best regards.

    Drok
    Keymaster
    November 5, 2017 at 3:45 am
    Post count: 2971
    in reply to: Wiring for DROK DC 0-120V 0-100A Digital Multimeter #24381

    Hello Jon,
    We are sorry there is no way to change this setting.
    Hope you can understand.
    Best regards.

    Drok
    Keymaster
    November 3, 2017 at 10:07 am
    Post count: 2971
    in reply to: Wiring for DROK DC 0-120V 0-100A Digital Multimeter #24234

    Hello Henning Kasper，
    Thanks for writing in.
    Do you mean this item? https://www.amazon.com/dp/B017BCXQO6
    Would you please take some pictures to show your wiring? If you don’t know how to attached pictures here, please try to send it to service@droking.com.
    We will try our best to solve problem for you.
    Best regards.

    Drok
    Keymaster
    November 3, 2017 at 9:19 am
    Post count: 2971
    in reply to: 12 V Battery/Power Supply for DROK DC 0-120 V, 0-30 A, W/Relay #24230

    Hello Kirk,
    Thanks for writing in.
    We are sorry we can’t ensure the item. Would you please send us the ASIN number or product link?
    We will reply to you once we confirm it.
    Best regards.

    Drok
    Keymaster
    November 3, 2017 at 9:15 am
    Post count: 2971
    in reply to: D85-2042A Digital Meter #24229

    Hello Nancy Nelson，
    Thanks for writing in.
    Do you mean this item? 200308
    We are sorry it doesn’t have calibration setting.
    Best regards.

  • Author
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Viewing 15 posts - 1,516 through 1,530 (of 2,965 total)
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