cncmachineguy , Hey, We all have to think GREEN nowdays......
Dave Purola,
N8NTA
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cncmachineguy , Hey, We all have to think GREEN nowdays......
Dave Purola,
N8NTA
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I agreeOriginally 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 ?
"If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte
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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?
Dave
Always wear safety glasses while programming.
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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
Last edited by cncmachineguy; - 12th November 2010 at 18:12.
-Bert
The glass is not half full or half empty, Its twice as big as needed for the job!
http://foamcasualty.com/ - Warbird R/C scratch building with foam!
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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.
-Bert
The glass is not half full or half empty, Its twice as big as needed for the job!
http://foamcasualty.com/ - Warbird R/C scratch building with foam!
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My SIM..
5 volts with 470 Rs. Much of the brightness will depend on the angle of the LED, physical and radiating.
Dave
Always wear safety glasses while programming.
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I like the sim dave! Thank you! I will finish my order now
-Bert
The glass is not half full or half empty, Its twice as big as needed for the job!
http://foamcasualty.com/ - Warbird R/C scratch building with foam!
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