How do I build this LED panel with these bulbs?
I am trying to build a grow light with 50 – 3 watt Red LED lights and 15 – 3 watt BLUE LED lights. The total power consumed would be 193 watts.
Specs for Blue lights:
DC Forward Voltage (VF): 3.2 Vdc ~ 4.0 Vdc
DC Forward Current (IF): Typ 650mA
Specs for Red lights:
DC Forward Voltage (VF): 2.0 ~ 2.8 Vdc
DC Forward Current (IF): Typ 650mA
I am fine on how to place the lights, but how can I get it to where I have all of the lights wired to my typical wall outlet plug? I don’t want to use resistors because they get hot, and I have no idea how to use a driver. I’m a beginner and would like anyone to tell me or show me how to connect these led diodes and have them plug into the wall.
Your best bet is to buy a switching AC-DC power supply. In the 200 watt range they are dirt cheap and very efficient. I would NOT recommend connecting them directly to 120 VAC.
If you get a 12V supply you can stack 12/2.4 = 5 red LEDs in series to get 12V. You can stack 12/4.0 = 3 blue LEDs in series to get 12V.
So you’d have 10 parallel stacks of 5 red diodes in series and 5 parallel stacks of 3 blue diodes in series all connected to you 12V supply.
That is a total of 15 parallel stacks * 650ma/stack = 9.75A
For a 12V system this would consume 117W.
Not sure where you got your 3W rating for those parts from.
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