Recent content by smilem

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    What PSU do I need for this LED bulb?

    I measured voltage is 175.5V current is 31mA Led Bulb rating 5.5W Make: LivarnoLux How can it be that each led needs 10.9V and 3mA current? All LEDS are wired in single group. What PSU I need to get to make this no flicker hack? I see allow china PSU are made like 300mA 600mA etc. Voltages...
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    What PSU do I need for this LED bulb?

    Hello, I gave found a very decent LED bulb, CRI95. It's cheap 3Eur. The problem is PSU is cheap and it flickers. Here are photos.
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    Looking for RGB, RGBW Led with 200 Lumens each color ! for photography

    Helo, I'm looking for LED's to make me RGB back light. I'm unsure about the white LED, but that's just more for convenience, I can swap the whole assembly for white LED. The problem I'm facing is I need star like base plate for at least 3 RGB leds each ~200 Lumens (like typical white 3WLed)...
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    Good lab power supply, not china crap yet not overpriced?

    Hello, is there such thing as Good lab power supply, not china crap yet not overpriced? I see the gwinstek has one PSP-405: Voltage 0~40V Current 0~5A PROTECTION OVL/OCL/OPL/OTP...
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    How to drive SHARP - GW5DGC40M04 Megazenigate 25W LED?

    Hi, I would like to know how ca I drive the 25W LED? I would like to drive via 230V AC as it will replace 100W halogen bulb. Datasheet: http://www.farnell.com/datasheets/1303301.pdf Application note: http://www.farnell.com/datasheets/1303303.pdf Description LED, MEGAZENI, 25W, NAT WHT...
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    ZXSC300 0.8v-4.5V 700mA 3W LED Driver - help with componets

    Well decided to use sxcs300 so it it doesn't work may you suggest something better but not very expensive? The beam output from lead is better because it is bigger than luxeon star leds. I also would like to repeat my question about C1 and C2 what type / size should I use?
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    ZXSC300 0.8v-4.5V 700mA 3W LED Driver - help with componets

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    ZXSC300 0.8v-4.5V 700mA 3W LED Driver - help with componets

    Oh and I forgot to ask, I read somewhere that when working with pulsating voltage like this ZCX310 driver IC it's hard to measure current correctly. Is this true? I have access to good quality multimeter U1242A. Will it work OK on measuring current and voltage for this circuit?
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    ZXSC300 0.8v-4.5V 700mA 3W LED Driver - help with componets

    Thanks for the circuit diagram. What if I hack my battery holder to make 1 battery be parallel not in series? That should give me 3V top voltage. But the 1 battery that will be connected parallel will give more juice anyway. Then I can use ZXCS300 like in this datasheet...
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    ZXSC300 0.8v-4.5V 700mA 3W LED Driver - help with componets

    I have a china made led torch with AMC7135 chip in it. The thing is 1W Luxeon LED 350mA. Work very nice, even with very low power batteries. I recently build joule thief circuit. And I have a spare seoul 1W Led, I was shocked to find out that the AMC7135 was better than joule thief on the same...
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    ZXSC300 0.8v-4.5V 700mA 3W LED Driver - help with componets

    Well I can't find the AX2002 IC on Farnell, mouser, lemona catalogs so if it's only available in china then so be it. The ZXCS300 310 can be used as Step down converter. I also found schematic for 3W LED http://www.diodes.com/_files/design_note_pdfs/zetex/dn73.pdf However it's for 3.8V to...
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    ZXSC300 0.8v-4.5V 700mA 3W LED Driver - help with componets

    Hi, My LED is 3W 700mA max AVAGO TECHNOLOGIES|ASMT-JW32-NVV01|LED, 3W, COOL-WHITE, MINIMUM 100LM | Farnell LT Power source is 1.5V batteries x3 = 4.5Volts. I would like to use ZXSC300 because it works up to 0.8V and I don't want to waste any power from my batteries Here is datasheet for...
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