CodeMaster
Once Code Master, always Code Master
- Joined
- Mar 23, 2010
- Messages
- 44
So I've reached a point in my Milennium Falcon build where I need to start the work on the electronics before I continue with the assembly.
For my lighting I'm looking at the following:
6 white LEDs 3.2 v forward voltage, 20 mA
19 white LEDs 3.4 v forward voltage, 30 mA
18 red LEDs 1.8 v forward voltage, 20mA
4 red LEDs 2.1v forward voltage, 20 mA
EL Sheets for cockpit interior and (hopefully) the Engines (no idea yet of the current draw for these, but can't be too high since they can run off AAA cells)
I'm going to be using 5V voltage regulators to reduce the voltage of the power supply.
I've used the led calculator resource provided by Grendels, and based on the calculations provided by that website, I will have a circuit with a total power disipation of 5,668.2 mW and a current draw of 1090 mA.
I'm going to be looking at a wall wart to drive this setup, and figure I will need a 5-12V supply with an output current of around 1.5A just to allow for "wiggle" room, as I need to determine what the current draw for the EL sheet circuit will be.
Does this sound reasonable for my power supply requirement, or should I be looking at more output current?
My other question has to do with the heat produced. 5.6W of power being dissipated by the resistors and LEDs seems like something I may need to be concerned with for an enclosed circuit within a plastic model, this is in addtion to any heat that will be generated by the EL sheet driver circuit (although that seems negligable on my bench).
Am I off my rocker for thinking I need to be concerned with the heat the lighting will produce?
Thanks in advance
For my lighting I'm looking at the following:
6 white LEDs 3.2 v forward voltage, 20 mA
19 white LEDs 3.4 v forward voltage, 30 mA
18 red LEDs 1.8 v forward voltage, 20mA
4 red LEDs 2.1v forward voltage, 20 mA
EL Sheets for cockpit interior and (hopefully) the Engines (no idea yet of the current draw for these, but can't be too high since they can run off AAA cells)
I'm going to be using 5V voltage regulators to reduce the voltage of the power supply.
I've used the led calculator resource provided by Grendels, and based on the calculations provided by that website, I will have a circuit with a total power disipation of 5,668.2 mW and a current draw of 1090 mA.
I'm going to be looking at a wall wart to drive this setup, and figure I will need a 5-12V supply with an output current of around 1.5A just to allow for "wiggle" room, as I need to determine what the current draw for the EL sheet circuit will be.
Does this sound reasonable for my power supply requirement, or should I be looking at more output current?
My other question has to do with the heat produced. 5.6W of power being dissipated by the resistors and LEDs seems like something I may need to be concerned with for an enclosed circuit within a plastic model, this is in addtion to any heat that will be generated by the EL sheet driver circuit (although that seems negligable on my bench).
Am I off my rocker for thinking I need to be concerned with the heat the lighting will produce?
Thanks in advance