Hi there. I need 660 nm red light for plant growth. I don't have any experience with electronics but I have the following setup from my research on the internet:
Thank you. Connecting them parallel and using 12 V power source is a nice idea. Now, I am planning to buy :I bought 4 x 10W LEDs very similar to the above. I mounted them with thermal epoxy on a 150mmx100mmx16mm heatsink. They are 12V units and at 12V they take 1.3A! That is 16W - and they get very hot. Don't be tempted to power them without a heetsink. With all 4 combined I used a 0.22Ω resistor in series with them to reduce the power. Soldering them was the easy part. Images below.
Edit, for the curious, they were for an indoor herb garden which I managed to kill.
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Thank you. Connecting them parallel and using 12 V power source is a nice idea. Now, I am planning to buy :
* Power source: 220V to 12 V adaptor
* 10 pieces of 10 watts 6-7 V 840-1000mA 660 nm LEDs(Will be connected parallel)
* 12v 0.39A fan (Will be connected serial)
How many resistors do I need to drop power? Will it work?
Sorry for my bad electronics.
Notice that he isn't using the same LEDs that you linked to? His aren't ball mount but have a wire connection to power them.
Thank you. I will look for other solderable LEDs.
I have asked the seller he told me that "No. It is not a ball. Usually, the led chip connected by cable." Also, I have looked at the other seller's product, they all have a ball type specification. I am thinking about to buy what do you think about that? Thanks.
this one time i was at a customers home and in his room was a "other"herb .. he was growing in a small Styrofoam cup and using a 60watt regular incandescent bulb about 3ft from the shelf ... the poor plant was soo tall , about that, 3ft, but it only had 4 leaves, and 2 of them were pressed against the bulb starving for light
smarter to just gro your own ... what are the penalties for uk?