PSU Switch Box

[Crazed_climber]

I bought 100 leds so I am going to build a box with switches and phone connectors for easy connection and to put all the switches in one place. I can just put phone connectors on all my lightings creations and then use wire with a phone connector on each end to connect the lighting to the Psu and switches. I was also thinking I could put a pci slot in the back with maybe 5 phone couplers in it to connect internal lighting (maybe a fan or two aswell) to my external Switch Box. Sorry if this is confusing, I can be an idiot and its 2:30 in the morning. Please post and questions, comments, ideas or improvements you guys can see.

PS: + and - go to the power supply.


http://i4.photobucket.com/albums/y113/Crazed_climber/Switch-Box1.gif

[Malatory]

something that doesn't look like it was though out or could be that I am missing it...

Power usage. you can pull something like 7-10 Amps depending on your setup.

using the ever popular Linear1 LED wizard .. 12V supply 3.3 V for the diode and 20ma for the diode..
http://led.linear1.org/led.wiz
that would be also taking up 83Watts - 120W

[crazybillybob]

Malatory's Idea's right the Amps pulled by 100 Leds. For rough max power (in watts) P=IxE (P is Power in Watts, I is current in Amps, and E is Voltage in volts) ([.020A X 3.3V]X100=6.6W)
Max Rough Current in Amps is Diode draw (0.02A) X number of draws 100 or 0.02Ax100=2A. This can be reduced by using a parallel-series configuration to But it will increase the power consumption (W) (1 to 2 AMPS)

This is a diagram from Malatory's linked website. Total Power Dissipation 12W
Total Current Draw 1Amp.

These numbers are all Ideal in reality the current and voltage draws are different (guess HIGH!) so you want to add a buffer of 10-20% into the power supply(when powering up the circuit you draw more power). So you'll need a 12V 2AMP (24W) Power supply for this, Not counting the "Fans" you wanted to add.


Solution 1: 2 x 50 array uses 100 LEDs exactly
+12V -GND
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
+ -|>|- -|>|- -/\/\/\- + R = 270 ohms
The wizard says: In solution 1:

* each 270 ohm resistor dissipates 108 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 5400 mW
* together, the diodes dissipate 6600 mW
* total power dissipated by the array is 12000 mW
* the array draws current of 1000 mA from the source.



I hope this helps, I'm not trying to confuse you just keep your mods safe for you and your hardware!

Crazybillybob

[Malatory]

Sorry :(

I did the math at 100 not 1000 like I should have.

So its .7-1amp and 8.3 -12W of power that it will draw.

(one reason to give source of information so they can be doubled checked)

[Crazed_climber]

well I forgot to mention it runs off a 300watt test power supply, just for lighting :D. I guess thats an important detail. Secondly I have 100 resistors for the 100 leds dropping the 5v rail to 3.4v. Thirdly I know how to wire leds I have wired tons of them. I put blue glow behind my couch by running about 30 leds in parallel each with its own resistor (because that keeps the resistor always the same value and I can buy them in bulk). I have also made a parallel curcuit under my keyboard tray to light my keyboard at night.