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Drok

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  • Drok
    Keymaster
    August 5, 2016 at 3:45 am
    Post count: 2971
    in reply to: 8-40V 100W step-down for audio : adding capacitor ? #6831

    Hello Phile,
    Thank you for your sharing.
    If you have any questions, please feel free to contact us.
    Have a nice day!
    Best regards

    Drok
    Keymaster
    August 5, 2016 at 3:40 am
    Post count: 2971
    in reply to: DC Voltage Regulator Index #6830

    Hello Jeremy,
    Thank you for writing in.
    Since there are many products are with similar product titles, it is hard for us to ensure the product you have bought.
    Could you please tell us your order ID or the link of the product?
    With your help, we can find a solution more quickly.
    Looking forward to hearing from you.
    Best regards

    Drok
    Keymaster
    August 5, 2016 at 3:32 am
    Post count: 2971
    in reply to: Potentiometer on 2.5-30V 0.40 voltmeter ??? #6828

    Hello Rob,
    Thank you for writing in.
    Is this product you have purchased?
    DROK® 0.40” DC2.5-30V LED Waterproof Digital Voltmeter 12V/24V Voltage Meter Gauge Panel Battery Volt Monitor Tester with 2 Wires and Bright Red Digital Display for Solar Panel Lithium ion battery 18650 Monitoring
    If yes, this product does not have a potentiometer.
    This product is well calibrated before shipping to Amazon warehouse.
    Beg your understanding.
    Best regards

    Drok
    Keymaster
    August 5, 2016 at 3:14 am
    Post count: 2971
    in reply to: Which product is in the image? #6826

    Hello Steve,
    Thank you for writing in.
    So sorry we cannot find out the product in the image.
    It is hard for us to ensure the product just by an image.
    Could you please tell us more information of the product?
    With your help, we can find a solution more quickly.
    Beg your understanding.
    Best regards

    Drok
    Keymaster
    August 4, 2016 at 1:57 am
    Post count: 2971
    in reply to: instructions for LTC1871 3.5V-30VZ DC converter #6809

    Hello Carlos,
    You’re welcome.
    If you have any questions, please feel free to contact us.
    Have a nice day!
    Best regards

    Drok
    Keymaster
    August 4, 2016 at 1:52 am
    Post count: 2971
    in reply to: 8-40V 100W step-down for audio : adding capacitor ? #6808

    Hi Phile，
    Thank you for writing in.
    Yes, your idea can work.
    You can add a capacitor close to the OUT pins, no need to add capacitors to both IN & OUT pins.
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    August 3, 2016 at 2:30 am
    Post count: 2971
    in reply to: USB Multimeter Comparison #6794

    Hello Mike B,
    Thank you for writing in and so sorry for the inconvenience caused on you.
    Could you please tell us more details of your operation, such as the input voltage/current, the wiring, the load, the working environment?
    If you can, we sincerely hope that you can send us some imgages to let us check the problem details
    You can send this info to us by email(service at droking dot com).
    With your help, we can find a solution more quickly.
    Looking forward to hearing from you.
    Best regards

    Drok
    Keymaster
    August 3, 2016 at 2:17 am
    Post count: 2971
    in reply to: Drok step up module charger with solar panel decrease in charge on iphone 4 #6793

    Hello pb,
    Thank you for your message.
    We will check it and find a solution for you as soon as possible.
    Have a nice day!
    Best regards

    Drok
    Keymaster
    August 3, 2016 at 2:12 am
    Post count: 2971
    in reply to: instructions for LTC1871 3.5V-30VZ DC converter #6792

    Hello Carlos,
    Thank you for writing in.
    Since many products are with similar product titles, it is hard for us to ensure the product you have bought.
    Could you please tell us your order ID or the link of the product?
    With your help, we can find a solution more quickly.
    Looking forward to hearing from you.
    Best regards

    Drok
    Keymaster
    August 3, 2016 at 1:59 am
    Post count: 2971
    in reply to: DROK LM2596 #6790

    Hello Richard ,
    Thank you for writing in.
    Since most of product with similar titles, it is hard for us to ensure the product you have bought.
    Could you please tell us your order ID or the link of the product?
    It is better that you can tell us more details of your operation, such as the input voltage/current, the wiring, the load, the working environment.
    If you can, we sincerely hope that you can send us some images of your wiring to let us check the problem details.
    You can send this info by email (service at droking dot com)
    With your help, we can find a solution more quickly.
    Looking forward to hearing from you.
    Best regards

    Drok
    Keymaster
    August 1, 2016 at 8:31 am
    Post count: 2971
    in reply to: 090637_EU data sheet #6760

    Hello Alan,
    Thank you for writing in.
    Here the PDF file is the datasheet of the product, please check it.
    DATASHEET_090637
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    July 29, 2016 at 4:05 am
    Post count: 2971
    in reply to: Grounding 120w power supply converter #6745

    Hello Rod Cotter,
    Could you please tell us what is the power supply for your 6V system with positive ground?
    Generally, the power supply from a car is DC 12V.
    It is better that you can send us some images of your wiring to let us check the details.
    You can send us the images by email(service at droking dot com).
    With your help, we can find a solution more quickly.
    Best regards

    Drok
    Keymaster
    July 28, 2016 at 2:11 am
    Post count: 2971
    in reply to: Instructions needed #6703

    Hello jeff bragg,
    Thank you for writing in.
    So sorry for the inconvenience caused on you.
    Since many products are with similar module number, it is hard for us to ensure the product you have bought.
    Could you please tell us your order ID or the link of the product?
    With your help, we can find a solution more quickly.
    Looking forward to hearing from you.
    Best regards

    Drok
    Keymaster
    July 28, 2016 at 2:06 am
    Post count: 2971
    in reply to: Drok step up module charger with solar panel decrease in charge on iphone 4 #6702

    Hello pb,
    Thank you for writing in.
    Could you please send us some images of your wiring?
    You can send the images by email (service at droking dot com).
    With your help, we can find a solution more quickly.
    Best reagrds

    Drok
    Keymaster
    July 27, 2016 at 2:48 am
    Post count: 2971
    in reply to: Dc to dc converter, 481225L #6658

    Hello Jared，
    Thank you for writing in.
    Since so many products are with similar module numbers, it is hard for us to ensure the product you are referring to.
    Could you please tell us your order ID or the link of the product?
    With your help, we can find a solution more quickly.
    Best regards

  • Author
    Posts
Viewing 15 posts - 2,416 through 2,430 (of 2,965 total)
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