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  • posted bysluggrits on 04/27/2015

    Comes in handy for testing LEDs.


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  • posted byRadek81 on 07/14/2014

    Its working with high efficiency. In case of DC powering you can remove input diodes and the efficiency will increase even a little higher. Not any cons. I have seen the IC in some car/tractor additional light - the quality is guaranteed even for wide temp range. The efficiency is on perfect and... Read more

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  • posted bypmatil on 08/29/2013

    Cheap, has good quality MR16 pins, good silicone wires, small The input cap is useless. With the original cap I got 55 % efficacy with 2 blue leds and 12 V input (1 A output current). The inductor also gets quite hot. The dimming pin should maybe have soldering pad. Changing the cap to either or... Read more

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  • posted bybls123 on 08/09/2013

    Small, lightweight and easy to modify for just about any use. Has very good current regulation that only varies 5-10ma at most over the total operating range. The units single resistor that sets the current level is easy to change. Input has a bridge rectifier so polarity independent and can be a... Read more

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  • posted byFabianKnapp87 on 03/18/2013

    - PT4115 with standard wiring. - So it has capabilities for dimming - small - price is very nice - PT4115 is not useful for use them in parallel at the output. You can solder a wire to the DIM pin of the PT4115 and control it with PWM. It is also possible to reconfigure this wiring for 1,2A (but... Read more

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  • posted byJondo76 on 01/19/2013

    - Can handle many LEDs in series. - Good quality PCB - Efficiency is high, measured 96% (25 V input, 24V LED output) without rectifier. - Uses Rubycon japanese capacitor - Analog or PWM dimmable (if you can solder small things) - Reliable, I have been running them for thousands of hours. - Not as... Read more

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  • posted byoinkwaste on 01/10/2013

    PT4115 is a very versatile chip that can be supplied up to 30V. So considering you change the capacitor to something like 35V-50V, you can drive 7-8 3W leds with this beast. isnt it amazing? also the price you can get it is so cheap, it sometimes doesnt worth to make it yourself. In small the and... Read more

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  • posted byInfratuna on 10/24/2012

    Building quality seems good. Does what promised and little more - it works with my bicycle dynamo which produce 6 V max. One of my GU10 230 V 3W led lamps driver broke down. I change this driver to the lamp and now I use it in my bicycle! It perfect cause it has rectifier and bicycle dynamos AC.... Read more

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  • posted byal1alex on 10/07/2012

    Small, very easy to use driver. Based on well-known PT4115 chip so it will be easy to change output current (up to 1.5A) or add dimming wire Works nice with 2 LEDs starting from 6.1VDC (with 5.55 V output)/ Can accept DC and AC - no problem with wrong polarity. Will be used for bike headlight. on... Read more

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  • posted byphett on 06/04/2011

    It works very well in a wide range of voltage. Can be dimmed with some small modification. Dim-Pin is not made available on the PCB, but its not that difficult to add a wire for dimming. I have only tested dimming with a PWM from an avr. Amazingly, when my small test-LED directly on the pwm-pin a... Read more

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