Recent content by jgordo32

Thanks for all of the help guys. I will definitely be returning to these forums many times in the future. http://www.youtube.com/watch?v=7UkuMnFmx6A" is the result. I'm really pleased with how it turned out, so thanks again everyone!

For example, would http://products.cui.com/adtemplate_child.asp?brand=v-infinity&p=85690&c=768138&catky=764537&subcatky1=356029&subcatky2=" work? It only has 1A output, think that would be good enough? I theoretically only need .7A

@mdjensen22 Oh nice, thanks. Is it just me or does that say it weighs 14kg? Are they all going to be that big and heavy? I was thinking I could get one of those wall converters that you use for like a cell phone or something. Something like...

@mdjensen22 Oh true, That's weird, the website where I bought them listed different specs from the datasheet. I think I'll trust datasheet. Can anyone link me to a 24V (chains of 6) or 12V (chains of 3) AC to DC converter I could use? Thanks!

@mdjensen22 No 25mA is not their maximum. Here's their http://www.hebeiltd.com.cn/led.datasheet/330LB7C.pdf" I'm thinking about doing microcontroller animations later in my project. Although not with the intention of saving power =P However, I just want to get the thing safe and working...

@vk6kro Could you explain why not having an input wire connected to the output matters? For example, if I want to take it back for not being fully isolated, how will I know? Unfortunately, a google search for "fully isolated" did not return any helpful results, so I still don't really know...

Hey, so I'm currently trying to decide on a career path between Computer Engineering and Computer Science. I just finished a summer internship in CS and thought it was pretty cool. Next summer I'd like to get an internship in Computer Engineering. Problem is... I have no idea how to get hired in...

as the output was totally isolated from the primary. I don't know what that means, could you explain? Also, could you point me to a good converter? I've never purchased one of those before. Thanks.

@vk6kro Is there any advantage to using a transformer and leaving it in AC just to rectify as opposed to just using a converter to something like 40V DC? Also, are the 2 diode drops from the bridge rectifier you want me to put in? Also also, since I'll have my last string with only 8 LEDs...

Thanks jambaugh, that much I could handle on my own =P Is it reasonable for me to build a converter from 120V AC --> ~9V DC?

If I could achieve one thing today, it would be to convince you that ANY risk of electric shock is totally unacceptable. 160 volts DC from a 50 uF capacitor could kill you. If it killed somone else, you could get a lawsuit that would ruin you for years to come. You might end up in hospital...

@vk6kro So, you're proposing that I hook up my AC power supply to a bridge rectifier as show on wikipedia's article http://en.wikipedia.org/wiki/Diode_bridge" . Then I connect a 50 uF smoothing capacitor across my two inputs. That will result in a relatively smooth 160V DC input you claim? Can...

Thanks for the response mike! First point: I see what you mean about 160V being too much. But I'm questioning your solution (no offense, haha). If I put in a bigger resistor, sure it will handle the peak better. But what about the valley? Won't it draw the current well below the 25mA rating...

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...