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#Post#: 2379--------------------------------------------------
Ideas on how to light these Leds
By: barbados Date: April 22, 2014, 7:00 pm
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Hi Guys,
I am really enjoying this forum, it just seems to be a hot bed
for ideas and innovations!
I recently came across these leds (
HTML http://www.goldmine-elec-products.com/prodinfo.asp?number=G19653<br
/>,
HTML http://www.goldmine-elec-products.com/prodinfo.asp?number=G19461<br
/>) and wondered if they could be economically driven by joule
lamp coils?
Looking forward to hearing your thoughts.
Thanks
Andre
#Post#: 2381--------------------------------------------------
Re: Ideas on how to light these Leds
By: lynx wind Date: April 22, 2014, 7:11 pm
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The first one listed just needs 9-12 vdc. You might be able to
pulse the DC and fool the eye into thinking its on all the time.
I'd use the circuit out of a piezo buzzer (remove the buzzer)
and run to the base of a 2N3055 transistor. That will turn the
transistor on and off at a high rate and you might save some
current.
#Post#: 2382--------------------------------------------------
Re: Ideas on how to light these Leds
By: happygolucky Date: April 22, 2014, 7:32 pm
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yes, very popular with
HTML http://forum.arduino.cc/index.php?topic=194720.0
#Post#: 2383--------------------------------------------------
Re: Ideas on how to light these Leds
By: nessprojects Date: April 22, 2014, 7:43 pm
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Firstly Hi barbados and welcome,
Both of these led's must be run at the correct current or you
will simply burn them out.
the 10w led is comprised of 3 rows of 3 colums of 1w led's, now
generally a 1w led can be driven with a max of 350ma hence
multiply this by the 3 gives the 1 Amp specified or near enough.
The smaller one needs a lower current because of the higher
voltage + they are not going to be as bright.
I have a scematic of a circuit to run led's at any given current
rating and will post it as soon as i sort this tempremental
computer out.
#Post#: 2391--------------------------------------------------
Re: Ideas on how to light these Leds
By: barbados Date: April 23, 2014, 2:22 pm
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Hi Guys,
Thanks very much for your contributions, i will take them on
board and make an effort to get something going.
Though not an active contributing member, i make it a point to
always check this forum and review submissions.
There is always something to learn!
Thanks again.
Best
Andre
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