- #1
jgordo32
- 15
- 0
Hey, so I have a large array of LEDs. I think I have 168 of them.
I want to power them from my wall in the US (120V AC). The forward bias for each LED is 2.8V. The current rating is 25mA.
I plan to arrange them in chains of about 42 to get 117.6V drop over all the LEDs. That leaves me with 2.4V to drop over a resistor. So to get 25mA I would need a 96 ohm resistor in each chain (2.4V / 96Ohms = 25mA). The diodes should act as rectifiers by themself.
First question, does all of that make sense or am I missing anything?
Second question, will there be any points in my circuit that are super dangerous?
Thanks!
I want to power them from my wall in the US (120V AC). The forward bias for each LED is 2.8V. The current rating is 25mA.
I plan to arrange them in chains of about 42 to get 117.6V drop over all the LEDs. That leaves me with 2.4V to drop over a resistor. So to get 25mA I would need a 96 ohm resistor in each chain (2.4V / 96Ohms = 25mA). The diodes should act as rectifiers by themself.
First question, does all of that make sense or am I missing anything?
Second question, will there be any points in my circuit that are super dangerous?
Thanks!