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Dave thank you! I actually intended to hook it up this way, but somewhere between yesterday and today I got myself turned around. I even drew it up this way in my schmatic. double DOH! So 470 both sides, makes sense to me!
Prolly the only size sips I didn't order.
I want to get a better idea of how these LED circuits will work.
So let's take a look at how the DOH! circuit will perform ...
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It's more significant since you will be using 3 sets of 2-LEDs.
cncmachineguy, The only problem with this circuit arrangement is there will always be current flowing in the circuit even if the LED's are supposedly off...
Dave Purola,
N8NTA
OK big thanks to Darrel for the sim :)
As for the constant current draw, In this app its no big deal. I will have a 5V 20A supply so I don't think it will be an issue. As long as no ones hot, they can draw all they want. Now I realize this would never be good in a battery app, so I will keep this in mind.
Overall thanks to all who helped out on this thread.
cncmachineguy , Hey, We all have to think GREEN nowdays......
Dave Purola,
N8NTA
I agree :)Quote:
Originally Posted by Dave
If you make a product and it sells let say 1M unit, then; since you are drawing 20mA for nothing, it will cost & consume 20,000A for nothing.
But, the question then would be this : Would I care that much if I could manage to sell 1Million units of anything ?
Green?
If we go with DT's first sim and add the four extra diodes to save the 20ma while the part is running. I wonder what the extra "green" cost of manufacturing, shipping and all the rest for the diodes and the possible extra board space for the part all adds up to.
I would guess, just a guess, the energy would be more than 20 ma at 5 volts. And what would it cost to do the study to find out?
First of all, one or the other LED will be on when power is applied, so current WILL be drawn when the switch is on. And as the system could draw up to 20 Amps plus when you throw in the hot wire, whats a few mA between friends?
Second, the Green LED should be lit most of the time, so it will be green! :)
Thrd, If I were making 1M units, I would change lots of things so as not to need to multiplex the I/O for LEDs, but as I am prolly only gonna make a few, I choose the easy way out. This will be more green because I won't have to spend as much puter time getting things sorted out so I can turn the lights off sooner and go to bed.
BTW, 3 100W light bulbs left on for 365 days would be ~21,900A. I don't think the local utility will notice
No I haven't put this to bed yet. Ok darrel, or anybody else, hows the sim like this scenerio? Use any values you like for R's. No need for the really cool clicky thing. I;m good with text answers.
Attachment 4952
My SIM..
5 volts with 470 Rs. Much of the brightness will depend on the angle of the LED, physical and radiating.
http://www.youtube.com/watch?v=gEfOU09A4eg
I like the sim dave! Thank you! I will finish my order now
Hi, everyone;Quote:
Originally Posted by Darrel Taylor
Can somebody teach me how to do this flash animations, from Proteus?
I have the Proteus 7.7 SP2.
Thanks in advance
Well, Proteus doesn't export Flash.
But it does export images in several different formats.
For the animation above, I had to export one image for each possible state.
I used 4 different resistor combinations, and 3 switch states per combination, so it took 12 images for the whole thing.
The images were imported to Aligator Flash Designer from Selteco, where you can add the transition effects and define the sequence according to what people click on. Add some "Circles and Arrows with a paragraph on the back of each one" and you have a Flash Simulation.
The one above took about 8 hours or so.
Thank you DT for your explanation!! I will try to do it like you said.