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Using Arduino => General Electronics => Topic started by: jonisonvespa on Oct 26, 2019, 03:47 pm

Title: what wattage is this cobb?
Post by: jonisonvespa on Oct 26, 2019, 03:47 pm
hi,

wonder if someone could help me please does an anybody know the wattage of this cobb?

https://drive.google.com/open?id=1AKhmLevPS-gTwtGafIDGb7vsrMw_TFI6

thank you


(https://forum.arduino.cc/index.php?action=dlattach;topic=642945.0;attach=330021;image)
 (https://forum.arduino.cc/index.php?action=dlattach;topic=642945.0;attach=330021;image)
Title: Re: what wattage is this cobb?
Post by: SteveMann on Oct 26, 2019, 04:05 pm
Both links are 404
Title: Re: what wattage is this cobb?
Post by: jonisonvespa on Oct 26, 2019, 04:27 pm
opps
Title: Re: what wattage is this cobb?
Post by: Grumpy_Mike on Oct 26, 2019, 09:58 pm
You can't tell just by looking at it, you need the data sheet or ask the people you bought it from.
Title: Re: what wattage is this cobb?
Post by: Wawa on Oct 26, 2019, 10:58 pm
I see three rows of ten 1-watt LEDs, so 30watt.
Vf should be about 33volt with a current of 900mA.
Leo..
Title: Re: what wattage is this cobb?
Post by: jonisonvespa on Oct 26, 2019, 11:47 pm
thank you
Title: Re: what wattage is this cobb?
Post by: MarkT on Oct 27, 2019, 01:44 am
Its pretty common for 1W dies to be used in these LED arrays, but there's no guarantee.  If there's no datasheet available, caveat emptor.