RE: Maximum distance for SCART

[Andrew Richards]

Nick

CAT5 (per core) is generally quoted at around 100 ohm/km, which equates to
a
100mV drop per metre per amp.

In another post, Keith said his KAT5 units will work at 9v, and I believe
they consume 300mA. If my maths is right this suggests a theoretical
distance of 100m before you've dropped more than 3v. Personally, I'd use
all 4 pairs.

Best regards

Andrew




-----Original Message-----
From: Nick Towers [mailto:<a
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Sent: 11 December 2001 15:17
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Subject: RE: [KAT5] Maximum distance for SCART


Hi Keith,

I like the idea of this remote power scheme - much neater than wall warts.
Can you let me know though what are the considerations using Cat5 for
power - eg what is resistance per metre and is resistance of per
plug/socket
connection significant? any inductance/capacitance considerations? Max
current? Max impedance/ internal resistance of source power supply? Do you
use a twisted or split pair or double up pairs so more current can be
handled? Question does not just relate to KAT5, but an indication of what
KAT5 could cope with in terms of max length of CAT5 etc would be useful.
Thanks

Nick