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 **broken link removed**
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.
**broken link removed**
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
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.
**broken link removed**
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