Basically my project is this; I'm building a DIY subwoofer for in my room, and I would like to have yellow LEDs wired underneath the enclosure, that pulse with the music. Like the example found
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First of all, if someone could look at my schematic and see if it will work, that would be very much appreciated. I'll list my references for my design bellow.
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LED Specs:
Useable Voltage is 2V
Power Dissipation =20mA 48 mW
Forward Current = 25 mA
Forward Voltage =20mA — 2.0 V (typ.) 2.4 V (max)
Reverse Voltage =10μA 5 V
Resistors:
180 Ohm 1/8 Watt 5% Carbon Film Resistors
Power Supply:
12Vdc regulated output
1.25 Amps
15 Watt
Universal AC Input 90-264Vac
No minimum load requirement
I used the following to come up with my schematic design:
This schematic
**broken link removed** (From the link above)
AND
View attachment 61829 (From
ledcal.com )
My only other questions would be:
1) Where to connect the the line for the audio?
2) Where to ground it?
This is the **broken link removed** I am using to power the sub, if that helps in answering my hopefully simple questions. Hopefully I remembered everything needed to assess my situation.
I just realized if I change the value for "voltage drop across LED", from 2.2 to 2.0 in the ledcalc, I'll need a 220 ohm resistor instead of 180 for my LEDs. The specs for the LEDs say 2.0 typ and 2.4 V max... Does that mean it could still work? Or are these two different things? (voltage drop and forward voltage that is)
Thanks, Tim