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  • Drok
    Keymaster
    September 5, 2017 at 9:10 am
    Post count: 2971
    in reply to: Heatsink for Dc-Dc Converter #21427

    Hello Dave，
    We are sorry we don’t sell cooling fin.
    We suggest the best way is to install cooling fan. If you need to run it with high power, cooling fin is not suitable.
    Best regards.

    Drok
    Keymaster
    September 5, 2017 at 9:00 am
    Post count: 2971
    in reply to: DROK Digital Multimeter DC 6.5-100V 100A Voltage Amperage Power Energy Meter DC #21423

    Hello Thomas Rautmann,
    Thanks for your message.
    We can’t ensrue the item you mention. Would you please firstly send us the product link?
    With your help, we can reply to you as soon as possible.
    Best regards.

    Drok
    Keymaster
    September 4, 2017 at 9:56 am
    Post count: 2971
    in reply to: info DROK 30A Portable Power Switch #21375

    Hello jhovan martin,
    Thanks for writing.
    The product link is not correct. Would you please send it again?
    Best regards.

    Drok
    Keymaster
    September 4, 2017 at 9:54 am
    Post count: 2971
    in reply to: Heatsink for Dc-Dc Converter #21374

    Hello Dave，
    Thanks for your business.
    Though you have heat sink for it, it’s better the output power is in the range of within 50W.
    If the voltage difference is large， please reduce output power.
    The heat dissipation method we recommend is to install cooling fan. The fan can be powerd by input power supply.
    Best regards.

    Drok
    Keymaster
    September 4, 2017 at 9:34 am
    Post count: 2971
    in reply to: Digital Ammeter & Voltmeter not showing current #21373

    Hello OJF,
    Thanks for writing in.
    We are not sure if the item you bought is the same to the one in Amazon site.
    We don’t want to give you a wrong solution. Assuming they is the same one, it’s regretted the display has been damaged. Did you wire it up correctly? We suggest you can contact ebay seller to ask for more detials.
    Best regards.

    Drok
    Keymaster
    September 1, 2017 at 10:00 am
    Post count: 2971
    in reply to: Speaker Connections #21193

    Hello Frank,
    Thanks for your business.
    We are sorry we can’t find out suitable connector for this speaker. In general, we just connect speaker by soldering. Hope you can understand.
    Or you can try to search it on Amazon. For any more questions, please feel free to contact us.
    Best regards.

    Drok
    Keymaster
    September 1, 2017 at 9:17 am
    Post count: 2971
    in reply to: DROK DC-DC Numerical Control Step Down #21191

    Hello Jon Chambers,
    Thanks for writing in.
    We are sorry we don’t have such test previously, so we don’t have a refined calculation. But once the power is off, the output also turn off at once.
    Best regards.

    Drok
    Keymaster
    August 30, 2017 at 9:42 am
    Post count: 2971
    in reply to: Cooling for 160w buck converter #21095

    Hello john,
    Thanks for your writing in.
    We are sorry there are no way to offer 12V for a fan. We suggest you should add a fan that can hold 6-60V power supply.
    Best regards.

    Drok
    Keymaster
    August 28, 2017 at 9:56 am
    Post count: 2971
    in reply to: current and voltage protection #21049

    Hello Brent,
    Thanks for writing in.
    Yes, these protections can only work when connect a relay.
    For any more questions, please feel free to let us know.
    Best regards.

    Drok
    Keymaster
    August 28, 2017 at 9:41 am
    Post count: 2971
    in reply to: default "on" for output voltage #21048

    Hello Boris,
    Thanks for writing in.
    Are you talking about this item?
    https://www.amazon.com/dp/B01FNVESV2
    We are sorry the output setting can be only off when turn on meter. For any more questions, please feel free to let us know.
    Best regards.

    Drok
    Keymaster
    August 27, 2017 at 9:44 am
    Post count: 2971
    in reply to: Melt Down #21030

    Hello Michael ,
    We are trying to send message to the email you use to log in our forum.
    Best regards.

    Drok
    Keymaster
    August 27, 2017 at 4:10 am
    Post count: 2971
    in reply to: Drok 950 watts booster Fail to power up after 3 intial power on with 51 vdc #21027

    Hello Georgiea,
    Thanks for writing in.
    We can’t ensure exactly the item you mention. Please let us know if it is the following one.
    200150
    And please can you tell us more details about your operation? For example, load. It would be appreciate if you can take a video or some pictures to let us check the problem. You can send it to service@droking.com.
    Best regards.

    Drok
    Keymaster
    August 25, 2017 at 10:01 am
    Post count: 2971
    in reply to: Melt Down #20999

    Hello Michael,
    We have checked our email, but we can’t find out your message. Did you send message to service@droking.com?
    Best regards.

    Drok
    Keymaster
    August 25, 2017 at 7:06 am
    Post count: 2971
    in reply to: Does the 5 digit led voltmeter signal negative voltage ? #20997

    Hello Stefano Di Marco,
    Thanks for your reply.
    When the polarity is reversed, the screen will not show a negative sign.
    Best regards.

    Drok
    Keymaster
    August 24, 2017 at 8:59 am
    Post count: 2971
    in reply to: Does the 5 digit led voltmeter signal negative voltage ? #20977

    Hello Stefano Di Marco,
    Thanks for your interest on our item.
    However, we can’t ensure the item you mention.Would you please tell us the ASIN number or just send us the product link?
    Best regards.

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Viewing 15 posts - 1,621 through 1,635 (of 2,965 total)
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