* Posts by John F. Eldredge

4 posts • joined 13 Nov 2008

Wirelessly-powered phones on sale within four years, says Nokia

John F. Eldredge
Go

no tuned circuit required

If all you are going to do is convert RF energy to DC power, you don't need a tuner; indeed, using one would be counter-productive. All you need is an antenna of some sort, a rectifier, and possibly a capacitor to smooth out the current flow.

The biggest drawback to this idea is that it would only trickle-charge the phone when it was turned off. In my case, I leave the phone turned on nearly all of the time, including when charging, so that I will receive any incoming calls instead of having them roll over to voice mail.

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Scientists: Tasers work, but we don't know how

John F. Eldredge
Dead Vulture

the current path is important

The path that the current takes to flow from one electrode to the other is probably a major factor. If the current passes through the heart, it is easy to trip the heart into fibrillation.

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One-eyed man creates prosthetic 'surveillance' eye

John F. Eldredge
Black Helicopters

real-life Steve Austin

During this last year, I had cataract surgery and my sister had a knee replaced. I joked that we were now the low-budget versions of Steve Austin and Jaime Summers, since my eyes didn't have zoom-lens capability and she didn't gain the ability to run 60 miles per hour.

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Attorneys for Palin email hacker: 'Don't call him hacker'

John F. Eldredge
Alert

cracker, not hacker

A hacker is a person who is enthusiastic about and expert with technology. The person who broke into Governor Palin's email account was a mere cracker, not a hacker. I have worked as a programmer/analyst for over 20 years, and am a proud member of two hacker organizations. I have never cracked into anyone's phone or computer system.

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