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Power over ethernet, an alternative proposal, what do you think?

J

Jan Panteltje

Jan 1, 1970
0
I know about standard IEEE802.3af.

But this morning I had this idea:
Why not use AC.
And then for example 20kHz, and over each twisted pair, so it does not radiate.

In the switch we can have a simple ring core with windings with all the same
number of turns, one winding for each switch output, one for input, these
transformers would be bidirectional, so it makes no difference which input
is the feed as long as there is one.
Windings could be fitted with a fuse.


In the Ethernet appliance a transformer can then transform to any needed voltage.

So setup (and fuse scheme) a bit like a normal house wiring.
Of course there is a max current these little connectors can do, but how about
using say a 20KHz (above audio range) sine wave.

It is very easy to generate too.
 
P

Pooh Bear

Jan 1, 1970
0
Jan said:
I know about standard IEEE802.3af.

But this morning I had this idea:
Why not use AC.
And then for example 20kHz, and over each twisted pair, so it does not
radiate..................

Is there a full moon tonight ?

Graham
 
B

Bob

Jan 1, 1970
0
Pooh Bear said:
Is there a full moon tonight ?

Graham

Edison would say no. Tesla goes both ways. Groucho thinks, "Two people in
the act and I get third billing!"

Bob
 
J

Jan Panteltje

Jan 1, 1970
0
Edison would say no. Tesla goes both ways. Groucho thinks, "Two people in
the act and I get third billing!"

Bob
Exactly Edison failed on that one.
Think also DC isolation.
 
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