DX » Community » Reviews » 2.7V~6V 3W Cree Circuit Board for Flashlights (15mm*2.7mm)
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  • posted bypjohno on 01/04/2014

    A Small Convenient Single mode linear driver for all leds, 700milliamp constant current output does not get hot as long as the input voltage is close to the forward voltage of the leds Wires are a bit thin mechanically wise but good electrically for 700ma being a linear driver excess voltage is dissipated as heat which is to be expected, keep input ... Read more

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  • posted byBoaaa on 07/18/2013

    Inexpensive, definitely outweighs any effort for DIY. Once you know what the real operating parameters are you have a very nice circuit. Mine came without the capacitor. Not a biggie for me (I soldered my own 1uF) but might be for people who want a drop-in kit and have long wires from the circuit to the LED. Specifications are not really what one would ... Read more

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  • posted byevgenic on 05/09/2013

    The driver is made on three linear current stabilizers AM?7135. It is difficult to find a driver for LED 3W or more (for example,Cree Q5) I put in my flashlight Sipik68 (for a Li-battery 14500). During the whole battery charge gives direct current. Accordingly, flashlight shines with the same brightness. It is desirable that the driver (and consequently ... Read more

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  • posted byFlav_3 on 01/14/2013

    This will be a review for the 700mA board since that is what dx sent out. It is essentially the same product but with one chip difference. Quiet, constant and easy to solder to. Will run an array of emitters. Does not get too hot. I got the ones with only two chips and also waited two moths for arrival. DX did the right thing and fixed the problem though.... Read more

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  • posted bylukasandrysik on 10/20/2012

    Very cheap, very simple It is basic configuration for those AMC 7135 integrated current regulators - basically there is nothing else on the board - just two! (in my case only two of them) AMC 7135 regulators and small capacitor. Nothing else These two 7135 result in 700mA current Nothing, works fine, no necessary modes Due to linear regulation it will ... Read more

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  • posted byUzziPA on 05/12/2011

    Very inexpensive, Extremely efficient, well regulated at 1050 mA, very usable voltage range, easy soldering, very god quality. none, so far other than my own negligence. I got one a year ago for an XRE project, and swapped out the LED for a new XML. Shortly after the swap the driver stopped working right, it now drives very dimly, maybe 10% power. I ... Read more

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  • posted byp3ngwin1 on 04/30/2011

    small, efficient for my needs, cheap and well enough made. very happy. can't think of any, maybe leads on both ends of the driver? so i don't have to solder them onto the brass(?) plates and risk frying the driver. bought some cheap Ebay "5 watt" flashlights with generic "star LED" that have the full 3xAAA batteries going to the LED. this can total ... Read more

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  • posted byepsilon519 on 12/18/2010

    Has three AMC7135's. Simple easy way to regulate current to an LED. I like the fact the voltage starts at 2.7V. Nice when you are trying to drive a Red LED with out a voltage regulator too. Doesn't get too warm. Saves the LED. Allows batteries to last longer. Only measured 580ma from it. Leads are thin and break off easily. only a 15 mm base. Ordered ... Read more

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  • posted bydon-juan on 11/16/2010

    Good circit board for modifying romisen rc g2. Fits without any grindingand it is easy to solder. just add q5 led and a 14500 battery and you have a real power flashlight. The only con i can think of is that the wire is a bit on the thin side but if you are careful it should not be much of a problem. I have only modified rc g2s and have had noproblems ... Read more

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  • posted byAedazan on 05/18/2010

    very small and works. It can be shaped with a grinder to fit into almost anything (may need a little resoldering). It doesnt heat up with extended use at all which means that it wont need to be mounted to a heatsink (as if anyone would anyway). The outer gold ring layer is too small for my liking but its still reasonably sized. the leads could be thicker ... Read more

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