[Prev][Next][Index][Thread]
Re: wireless transmitter (fwd)
-
To: tesla@pupman.com
-
Subject: Re: wireless transmitter (fwd)
-
From: Tesla List <mod1@pupman.com>
-
Date: Fri, 19 Dec 1997 07:17:30 -0700 (MST)
-
Approved: mod1@pupman.com
---------- Forwarded message ----------
Date: Thu, 18 Dec 1997 22:12:49 -0800
From: Jim Lux <jimlux@earthlink.net>
To: Tesla List <tesla@pupman.com>
Subject: Re: wireless transmitter (fwd)
> I am very interested in building a small wireless power transmitter.
Why not use microwave transmission of power. Easy to control the "beam",
relatively easy to construct an array of "rectennas" (dipoles with a bridge
rectifier). Lots of references to check out such as early works on
Satellite Power Systems (array of solar cells, beaming power back down to
earth, etc.) There was a microwave powered helicopter built about 20-30
years ago.
Start with a microwave oven magnetron as a power source, about a half
kilowatt at 2450 MHz (or 12 cm wave length). Build a suitable horn as a
transmitting antenna with narrow beam width. the rest is an exercise for
the reader.