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led driver circuit

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led driver circuit Customers Reviews

  • Good driver for the modernization of the flashlight

    posted by Bezpieka

    Well done soldering.Good stabilization of the current at the specified range of supply voltage.Seamlessly cooperation with LED CREE XM-L2 U3
    Little short cable for flashlights witch variable focal length. When soldering thicker wires is needed soldering iron with temperature stabilization. There are likely to damage the driver.About 40 minutes of operation at full power on a single low-quality battery 18650
    Nice to use product for hobbyists that you can change parameter of your old flashlight.
  • 3*7135 chips

    posted by espimones

    7135 chipsRegulatedMemoryReal output advertised
    This regulator drive out fairly steadily 1.4 amps. in max. mode.Exactly: 1.35 in high mode, 0.4 in middle, 0.6 in low (fluctuating in sos and fast strobe modes).I have put it, working together with a 16 mm alu base Cree R5 led in my Trustfire TR-801, and it bright now 25%-30% more than the original Cree Q5 led, giving a really flood light!According Cree data sheets, Cree R5 can hold up 1,5 mA, so this regulated circuit is perfect to this led. Other drivers that can only drive up 1000 Ma, will give 25% less light tan this.
    I recommend it
  • Powerful driver

    posted by plasmalights

    Powerful driver,Good selection of modes.
    I have installed this in to a custom built torch.The torch setup has a xml-U2 led driven by this driver and fed from an ultrafire red 2600mah 18650.All test results taken in high mode.Testing the output from the 18650 gives 4.00V and 4.00A giving a total battery draw of 16WTesting at the led gives 3.10V and 3.50A giving a led consumption of 10.85WCalculating these figures in to efficiency shows that 32% of the power is lost within the driver.This driver, but with selectable mode blocks (3mode 5mode 8mode etc) would be greatMust be fed from a good cell, when fed from a 14500 the max current is 2A not 4A.
    This XML-U2 build is really bright,I can live with the lack of mode memory and the extra disco modes.GOOD DRIVER!
  • nice 2100mA led driver

    posted by yrnkrn

    Cheap price and works well. Can easily drive five, six, seven, eight XM-L in series with 2300mA current. It can drive nine XM-L as well, but the current is lower at 2100mA which indicates this is just a bit too much.
    As usual, output wires are too thin for this current.
    Nice driver, buy it.
  • Works with up to 6 XML's

    posted by valdasbiel

    Driver board is suited to work with 4,5,6 XML's connected in series with output on high about 1~1.2A. It has three modes on cycle press and hidden flash. You can set any of three modes choosing from 10 levels of brightness. It has low voltage warning turning red status on.
    For better use with 3 or 4 XML's I have modified sense resistor with 0.04 Ohm value. Output current on high increased up to 1.5A.
    For the price it has one of the best user interfaces in comparison with similar drivers

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