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Re: Does Power Line Carrier work during power outages?

Subject: Re: Does Power Line Carrier work during power outages?
From: Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 23 Mar 2005 22:02:33 GMT
Newsgroups: sci.electronics.design, comp.arch.embedded, alt.home.automation
References: <1111604008.691529.214780@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>

Hello Chris,

> Does PLC still work when there is no AC power on the line - i.e. during
> a power outage?

If designed right, it can. However, keep in mind that PLC gear has to
drive the power line pretty hard. This means that any backup batteries
might exhaust quickly.

One reason for the hard (low-Z) drive is that the powerline contains a
lot of capacitive loads. Many power strips have caps, most electronics
do, I have even seen a vacuum that did.

Regards, Joerg

http://www.analogconsultants.com

References:
- Does Power Line Carrier work during power outages?
  - From: chris

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