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- Jan 14, 2011
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Hey everyone - I am just throwing this thread together to see if there would be enough interest for me to start modifying and current-setting these amazing little boards.
The boards I am talking about are these:
3.6V~9V 800mA Regulated IC Circuit Board for Cree and SSC LEDs (4-pack) - Free Shipping - DealExtreme
I have been playing with these boards for a while now and they are great for driving out isolated-case diodes.
The idea is that I would replace the SS14 diode on it with an SS34 diode (capable of handling 3A), and I would change out the current-setting resistor on it with one or two other resistors for the buyer's choice. Further, I would change out the positive and negative lead wires that come stock to be silicon, Mohrenberg wire
I have come up with a scheme of resistors that could yield these currents:
115mA <-- PHR
230mA <-- 6x/Pointer-power 445
378mA <-- conservative 12x/smaller 445
500mA <-- 12x/445
1.13A <-- roughly 1W 445
1.5A <-- higher powered 445
1.85A <-- Near upper limit of 445 current handling abilities
I figure that those currents will cater to a lot of different settings for a lot of different diodes that come now or in the future.
Since everything would be so damn cheap, I figured that I would end up charging about $3 or $3.50 or so + shipping. That way, the drivers come in a couple of days instead of from China, taking multiple weeks.
Does that sound reasonable to anyone?
These little drivers even come with a built in filter cap on the output (have tested it myself) and they are extraordinarily stable, and rather efficient - somewhere around 85% efficiency, last time I did the math.
Anyway, if anyone has any more questions or thinks this is a stupid idea, now is the time to say so!
EDIT: So after doing some price checks, I would have to charge $4.25 + shipping for each one of these drivers. Still a steal, though!
The boards I am talking about are these:
3.6V~9V 800mA Regulated IC Circuit Board for Cree and SSC LEDs (4-pack) - Free Shipping - DealExtreme
I have been playing with these boards for a while now and they are great for driving out isolated-case diodes.
The idea is that I would replace the SS14 diode on it with an SS34 diode (capable of handling 3A), and I would change out the current-setting resistor on it with one or two other resistors for the buyer's choice. Further, I would change out the positive and negative lead wires that come stock to be silicon, Mohrenberg wire
I have come up with a scheme of resistors that could yield these currents:
115mA <-- PHR
230mA <-- 6x/Pointer-power 445
378mA <-- conservative 12x/smaller 445
500mA <-- 12x/445
1.13A <-- roughly 1W 445
1.5A <-- higher powered 445
1.85A <-- Near upper limit of 445 current handling abilities
I figure that those currents will cater to a lot of different settings for a lot of different diodes that come now or in the future.
Since everything would be so damn cheap, I figured that I would end up charging about $3 or $3.50 or so + shipping. That way, the drivers come in a couple of days instead of from China, taking multiple weeks.
Does that sound reasonable to anyone?
These little drivers even come with a built in filter cap on the output (have tested it myself) and they are extraordinarily stable, and rather efficient - somewhere around 85% efficiency, last time I did the math.
Anyway, if anyone has any more questions or thinks this is a stupid idea, now is the time to say so!
EDIT: So after doing some price checks, I would have to charge $4.25 + shipping for each one of these drivers. Still a steal, though!
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