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constant current Customers Reviews

  • Best Driver I've found

    posted by bls123

    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 fed from either an AC or DC power source. Bridge rectifier diodes are easy to remove for greater efficiency when powering from a DC source. Uses a PT4115 chip. This makes the max input voltage 40VDC (or about 28V AC) so up to 10-11 LEDs in series can be powered (depending on which LEDs are used and the total LED voltage required of course). Input capacitor is only rated for 25V however so must be replaced for higher voltages.
    Less expensive and a lot easier than building a current regulator from scratch. Exactly the same as 13553 and 13557 except for it's one resistor that sets the current level.
    I buy a number of which ever (13553, 13555 or 13557) is least expensive at the time for projects and simply replace the resistor when a different current level is needed.
  • small dc-dc converter

    posted by nuralist

    The device was bought for powering Cree xml diode to limit current. The device have Voltage and Current regulation. My diode takes 3 ampers of current so I had to use little radiator with a thermal grease on the LM microchip, without it temperature was more than 100 C and LM chip protection had tripped. After i've used heat sink everythink became OK)
    informative specification
    good deal
  • Blinking Leds

    posted by emreeris

    Build quality OK, price is reasonable and it has enough power to drive 5mt led stripe.It has ground on input side to have safer installation
    I tried to use this driver to decorate my kitchen. I also ordered a 5 mt daylight led strip. My problem is about the leds. when I connect them to the driver, they started to blink. I was assuming non blinking leds :)Now I don't know what to or what is the problem..
    You may purchase this product if it fits your needs.
  • 6W Led Driver

    posted by gtsteve

    They seem to be good, they have been connected for only one day but they have stopped the flickering that my 4W Leds previously had. They seem to be well made, and the 4 connection wires are poked through the circuit board before soldering on which makes them less prone to snapping off. They were easy to connect.
    Nice soft silicone rubber insulation on the wires makes it a delight to strip with your teeth.
    They work fine and the price is right when you buy 10.
  • Great for driving two 30W LEDS

    posted by rusty1964

    Easy to connect and use.Does not get too warm with generous heatsink fitted.
    This unit, plus two 30W warm white LEDs makes great room lighting, noticeably brighter than equivalent power of compact fluoros, and no two minute wait for the fluoros to reach full brightess. The turn on delay is disconcerting for a few days and then you get used to it and stop having a momentary thought that the lights have failed :-)

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