Power DesignLine Blog
Is wireless recharging's day finally here?
Bill Schweber
7/4/2010 8:57 AM EDT
We have wireless communication everywhere, and will one form of wireless power transmission soon also become common?
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4 comments
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t.alex
The simple question is: do we really need wireless charging? what are the devices that we need to ...
Bill Schweber
6/23/2010 10:49 PM EDT
The low dropout regulator is a valuable tool in the power-supply roster; don’t assume its "drawbacks" should automatically rule it out of your design.
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Duane Benson
There are still plenty of applications that are just fine with a three-terminal LDO. Even plenty ...
Bill Schweber
6/18/2010 10:41 AM EDT
When you are talking about energy and alternatives, it's important to start with solid numbers first and then work down from there
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Engbob
Bill, Are you trying to scare us? The chemical storge and efficiency to do work of Gasoline (and ...
Goodbye, incandescent bulb--or maybe not?
Bill Schweber
6/11/2010 10:55 AM EDT
Before we rush to get rid of incandescent bulbs, we should honestly acknowledge their virtues, as well as the shortcomings of electronic alternatives
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lighthouse
Agreed, CFLs and LEDs have their advantages too - but the "switch all your lights and save lots of ...
RF-based energy harvesting is "back to the future" again, but with a twist
Bill Schweber
6/9/2010 5:29 PM EDT
"Free" energy, captured from the RF around us, is a new idea and also an old one but there is a mirror-image aspect to it, as well
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http://www.lulu.com/spotlight/poconoarmchairreview
Lol! I guess if a cell tower was putting out enough power, you could power some cell phones that ...
My "fans" want to know: what's the thermal impedance of dust?
Bill Schweber
6/4/2010 12:00 PM EDT
A layer of dust on heat-sink fins causes all sorts of headaches and noise
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t.alex
good sharing. i wonder if this is the same reason for my laptop which is getting louder nowadays.
Power-saving processor strategy is a tough call
Bill Schweber
5/29/2010 12:00 PM EDT
The obvious solution may not be the best, but the analysis is also tricky
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green_is_now
Should this not be an important study to do and share? Or do we just let each EE figure it out as ...
Power-saving processor strategy is a tough call
Bill Schweber
5/27/2010 9:04 PM EDT
The obvious solution may not be the best, but the analysis is also tricky
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Clever mechanical design enables energy-saving bulb control
Bill Schweber
5/21/2010 10:19 AM EDT
It takes more than circuitry and software to make a viable photosensitive bulb control
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green_is_now
But does this give a good thermal conduction of the bulb to the base with a "loose" bulb? Does ...
How about hydraulic wind turbines?
Bill Schweber
5/15/2010 12:00 PM EDT
This interesting alternative design offers advantages but also has drawbacks
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green_is_now
Add heat exchangers, turbo expanders, effiecency comes back up. Large size offsets costs. ...