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  • Drok
    Keymaster
    January 6, 2016 at 9:48 am
    Post count: 2971
    in reply to: Hand Crank Generator #2830

    Dear Steve,
    Thanks for your information.
    We do have one item may work for you well. Now it is out of stock.
    You can search drok 200176 on Amazon and you can also leave a email, we will let you know when it is restocked.
    Hope this will help you.
    Best regards

    Drok
    Keymaster
    January 6, 2016 at 2:58 am
    Post count: 2971
    in reply to: Manual for Power Module P/N 100197 #2829

    Dear Ryan,
    Here is a User Manual.
    User Manual
    Hope this will help you.
    More questions, please feel free to write back.
    Best regards

    Drok
    Keymaster
    January 4, 2016 at 9:31 am
    Post count: 2971
    in reply to: Regulator for Renault Traffic LED installation #2824

    Dear Richard,
    Thanks for your inquiry.
    We are sorry for our late reply as our technical team are day off on the New Year’ Day holiday.
    The voltage of car battery will change. It will be possible among 10.5-14V, sometimes higher or lower than 12V, then a boost converter is needed when lower than 12V, and need buck converter when higher than 12V. So you need a automatically boost buck converter.
    please view the item B00SM3UALQ or B00JKFNEQ8 on Amazon, hope these will help you.
    If you need constant current voltage regulator , please view the item： B00C9TKHC6 （ 090409）
    More questions, please feel free to write back to us.
    Best regards

    Drok
    Keymaster
    January 4, 2016 at 3:52 am
    Post count: 2971
    in reply to: Product missing from Amazon USB Adjustable Current Load #2820

    Hi,Alan
    This item is sold by DROK and fulfillment by Amazon.
    Now, it is out of stock, so you can’t see it on Amazon until it restored.
    It will be in stock sooner.
    Sorry for any inconvenience may cause on you.
    Hope this will help you.
    Best reagrds

    Drok
    Keymaster
    December 31, 2015 at 6:23 am
    Post count: 2971
    in reply to: Drok digital on/off delay relay module with LED display #2810

    Dear friend,
    We have send it by Email, please check.
    More questions, please feel free to contact us.
    Happy new year.
    Best regards

    Drok
    Keymaster
    December 30, 2015 at 8:13 am
    Post count: 2971
    in reply to: DROK version #2808

    Dear Garth,
    Glad to hear from you.
    180020 has USB 2.0, 180043 has USB 3.0, They are USB detector,
    180055 is a USB protector with USB 3.0.
    they both has OLED display.
    More differences, you can refer to Amazon detail page.
    Hope this will help you.
    Have a nice day.
    Best regards

    Drok
    Keymaster
    December 30, 2015 at 7:44 am
    Post count: 2971
    in reply to: MC100 USB Card #2807

    Dear William,
    Thanks for your information.
    Please click here
    documents
    Hope this will help you.
    Any question, you can reply the Amazon message.
    Happy New Year
    Best regards

    Drok
    Keymaster
    December 26, 2015 at 6:31 am
    Post count: 2971
    in reply to: Voltage dimming of LED lights #2773

    Dear friend
    If you want a handle potentiometer as the video show.
    See the picture, you can replace the potentiometer as follow.
    Picture1
    Picture2
    Hope this can help you.
    If you want connect to extra handle potentiometer, we are sorry to let you know we didn’t try this yet. We will try in the future.
    Appreciate your kind understand.
    Merry Christmas to you.
    Best regards

    Drok
    Keymaster
    December 26, 2015 at 2:44 am
    Post count: 2971
    in reply to: 5 wire, Volt/Amp Gauge installed on 12 negative ground Car #2769

    Dear friend,
    Thanks for your message and Merry Christmas to you.
    100043 can only be installed between the negative side of power supply and the negative of load.
    We are sorry for any inconvenience may cause on you.
    Hope this will help you.
    Have a great day.
    Best regards

    Drok
    Keymaster
    December 25, 2015 at 9:02 am
    Post count: 2971
    in reply to: DROK mini bluetooth amp – turn off greeting music #2765

    Dear friend,
    Thanks for your message and Merry Christmas to you.
    We are sorry to tell you that the greeting voice can not be turned off.
    We feel sorry for any inconvenience may cause on you.
    Have a great day.
    Best regards

    Drok
    Keymaster
    December 25, 2015 at 9:02 am
    Post count: 2971
    in reply to: DROK mini bluetooth amp – turn off greeting music #2764

    Dear friend,
    Thanks for your message and Merry Christmas to you.
    We are sorry to tell you that the greeting voice can not be turned off.
    We feel sorry for any inconvenience may cause on you.
    Have a great day.
    Best regards

    Drok
    Keymaster
    December 25, 2015 at 8:04 am
    Post count: 2971
    in reply to: Drok motor controller #2763

    Dear Josh,
    The maximum voltage input on these controllers is DC60V.
    Hope this will help you.
    Merry Christmas
    Best regards

    Drok
    Keymaster
    December 23, 2015 at 2:58 am
    Post count: 2971
    in reply to: Drok 15A Buck Ripple #2747

    Dear friend,
    Thank you for your continued patience with us.
    After testing, we found that the ripple is 400mV when it is no load, and it is 600mV when full load.
    Hope this will help you.
    Have a nice day.
    Best regards

    Drok
    Keymaster
    December 22, 2015 at 9:33 am
    Post count: 2971
    in reply to: Drok 15A Buck Ripple #2745

    Dear friend,
    Thanks for your message.
    Could you please tell us what input voltage output voltage is when it is no load, full load, and 80-100W load.
    We need to know this parameters so that we can get the ripple.
    Hope you can understand.
    Have a nice day.
    Best regards

    Drok
    Keymaster
    December 22, 2015 at 3:32 am
    Post count: 2971
    in reply to: pwm dimming of voltage regulator #2742

    Hi, sorry, we don’t have a voltage regulator that will accept 0-10v dc analog control input. As your description, please note that the wiring order is 20v to 30v boost converter — PWM dimmer—-100W LED.
    If you just need to step up voltage, the 150W DC Boost Converter is okay.

    If you want to drive LED, then you need a constant current boost voltage regulator and the LTC1781 converter is a good choose.

    Then if you still have any other questions, don’t hesitate to write to us.

    Thanks!

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