Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old February 25th 07, 04:39 PM posted to rec.radio.amateur.moderated
external usenet poster
 
First recorded activity by RadioBanter: Jul 2011
Posts: 182
Default Human-powered portable power generation

On Feb 25, 1:05 am, Steve Bonine wrote:
On the other hand, you occasionally see these flashlights or radios that
are powered by a crank that winds a spring and as the spring unwinds it
generates enough power to create light or run the radio. So the
technology has improved since the vintage model that we used for FD.
Maybe it's now efficient enough (and small/light enough) to be usable.


There's a big difference between powering a receiver and powering a
transmitter. I have a Sony that receives for many hours on a single
AAA battery. But 100 watts output from a transmitter cannot be
reduced below 100 watts of supplied power. Given that efficiency may
be around 50%, 200 watts of human generated energy is a heck of a
lot of calories. Need to lose some weight?
--
73, Cecil, w5dxp.com

  #2   Report Post  
Old February 25th 07, 06:25 PM posted to rec.radio.amateur.moderated
You You is offline
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 147
Default Human-powered portable power generation

In article .com,
"W5DXP" wrote:

On Feb 25, 1:05 am, Steve Bonine wrote:
On the other hand, you occasionally see these flashlights or radios that
are powered by a crank that winds a spring and as the spring unwinds it
generates enough power to create light or run the radio. So the
technology has improved since the vintage model that we used for FD.
Maybe it's now efficient enough (and small/light enough) to be usable.


There's a big difference between powering a receiver and powering a
transmitter. I have a Sony that receives for many hours on a single
AAA battery. But 100 watts output from a transmitter cannot be
reduced below 100 watts of supplied power. Given that efficiency may
be around 50%, 200 watts of human generated energy is a heck of a
lot of calories. Need to lose some weight?
--
73, Cecil, w5dxp.com


It is well documented that a very "FIT" human male can output in
the 100 Watt range on a well designed peddle powered Generator.
Most of the WWII handcranked gensets powered radios in the 20
- 40 watt range. Australia' Peddle Powered HF Sets were also
in the 40 watt range.

Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Human-powered portable power generation BNB Sound Moderated 7 March 7th 07 04:31 AM
Human-powered portable power generation Jon Kåre Hellan Moderated 0 February 27th 07 10:47 AM
Human-powered portable power generation Wayne Lundberg Moderated 0 February 26th 07 01:42 AM
B&K battery powered portable dual trace Oscilloscope - $100 Joe Boatanchors 0 October 4th 05 04:19 AM
Portable powered speaker Ron Hardin Shortwave 4 August 27th 04 09:50 PM


All times are GMT +1. The time now is 06:26 PM.

Powered by vBulletin® Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.
Copyright 2004-2023 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017