Breaking News
Comments
Newest First | Oldest First | Threaded View
green_is_now
User Rank
CEO
re: MIT power management spin-off raises funds
green_is_now   1/18/2013 6:42:44 PM
NO RATINGS
yes cradle to grave. agree misleading, as if they could effect the lossws in a power plant. The world is so used to BSin and being BS'd that nobody thinks a seond thought about it... Except engineers.

green_is_now
User Rank
CEO
re: MIT power management spin-off raises funds
green_is_now   1/18/2013 4:48:13 PM
NO RATINGS
0.5(ower plant efficiency aprox)*0.8*0.8*0.8 ~=0.2 must include the fuel to elctricity converion loss also.

Simon7382
User Rank
Manager
re: MIT power management spin-off raises funds
Simon7382   1/18/2013 7:33:38 AM
NO RATINGS
Well, this depends on how broadly they meant it. For example if you include incandescent lighting where most of the energy used is wasted as heat instead of the targeted light, or if you include the energy efficiency of all automobiles, etc., then it might be theoretically OK. But, of course, it has nothing whatsoever to do with the topic at hand, i.e. DC/DC power conversion and its efficiency. Hence, for sure it is marketing hubris.

chanj0
User Rank
CEO
re: MIT power management spin-off raises funds
chanj0   1/14/2013 11:26:49 PM
NO RATINGS
Switch mode power supply is known to be high efficiency. As far as I understand DC-DC convertor has efficiency as high as 98%. I guess the 80% means more than power conversion at home and for the devices. It might cover everything end-to-end including through the grid and step down conversion to either 220VAC or 110VAC. 80% still sounds high to me. Love to hear expert from electric company.

krisi
User Rank
CEO
re: MIT power management spin-off raises funds
krisi   1/14/2013 6:27:14 PM
NO RATINGS
"A staggering 80 percent of energy generated worldwide is lost as heat due to power-conversion losses"??? This can't be true



Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Feast Your Orbs on My Jiggly Exercise Machine
Max Maxfield
52 comments
Last weekend, I was chatting with my mother on the phone. She's all excited that I'm coming over to visit for a week in November. "I'll be seeing you in only seven weeks," she trilled ...

Glen Chenier

Missing Datasheet Details Can Cause Problems
Glen Chenier
3 comments
It is often said that "the devil is in the details." All too often those details are hidden deep within a datasheet, where you can easily overlook them. When a datasheet reference circuit ...

David Blaza

RadioShack: The End Is Nigh!
David Blaza
123 comments
I'm feeling a little nostalgic today as I read about what looks like the imminent demise of RadioShack, at least as we currently know it. An old ubiquitous cartoon image popped into my ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
47 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...