Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
resistion
User Rank
CEO
SAR rating?
resistion   8/4/2014 10:35:59 PM
NO RATINGS
I share tb100's safety concern. What would be the effective SAR rating for this charger?

tb100
User Rank
CEO
focusing RF power
tb100   8/4/2014 9:24:42 PM
NO RATINGS
I'm a little leary of transmitting focused RF power. On the other hand you could put your burrito on top of your phone so it would receive some of that focused power to heat it up.

On a more serious note, I've always wondered if a tiny, very-low-power device could harvest power from all the RF being broadcast all over the place these days: WiFi at 2.4GHz, 5GHz, all the various cell frequencies, even the old UHF,VHF radio and television.

Certainly it is possible to build a tank circuit to capture some of this power. I'm just wondering if it is enough to do anything with. Maybe you could have a sensor that just collects miscellaneous RF power for a few hours, then it could broadcast its data for a few microseconds.

rick merritt
User Rank
Author
Limited but cool
rick merritt   8/4/2014 6:40:21 PM
NO RATINGS
Who else is targeting this RF approach?

<<   <   Page 2 / 2


EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Oh, No! My Antique Analog Meter Has Twitched Its Last
Max Maxfield
20 comments
Well, life is certainly full of ups and downs, isn't it? When it comes to the antique analog meters I'm using in a number of my hobby projects, things appeared to be going swimmingly well, ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
20 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
15 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
46 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 ...

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)