dx concurrent wiring- Mtbr.com
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  1. #1
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    dx concurrent wiring

    hi all
    just bought some 800mah constant current drives from dx 4 $8.00 as im no sparky which solder pad is + or - g1 or g have a picture all so how many leds can be run off them i think they are the same as scar uses.
    cheers thwang

  2. #2
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    Reputation: Jim Z in VT's Avatar
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    Turn it over the center is (+), the outer ring is (-)

    JZ
    It's not about speed, it's about lack of control.

  3. #3
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    thanks jz
    so which are the battery +/- and the led +/-?
    thwang

  4. #4
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    The battery hooks up to the back... the inner circle is positive for the battery, the outer is negative...

    The wires that came soldered on the board go to the led.

    (Remember, these drivers probably put out closer to 1000 ma, not the 800 as advertised)

  5. #5
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    the attached wires are the LED leads (red + black -)

    the pads on the back are the battery terminals

    depends on your battery and the LED Vf but you can run one or 2 leds in series with these.

    search for other threads about these 3256 drivers....some of the newer ones are reported to be running much higher than 800mA. I have some of the older ones; they put out ~900mA running off a 4 x AA battery pack (4.8v nominal)
    It's not about speed, it's about lack of control.

  6. #6
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    I have just got 4 of them, all are just above 1000ma

  7. #7
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    To reduce current you can do the resistor shaving on one of the .47 ohm resistors or you can replace one with a 1.3 ohm resistor to get close to the 700ma desired.

    The max voltage on these boards should be a lot higher than the 9 volts of the older Zetex 300/310 versions. They appear to use the AX2002 chip and it is good for 23 volts max. Not sure of the ratings of the other components on the board.

  8. #8
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    thanks gents
    thwang

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