Dave Palmer wrote:
Assuming that what I am actually taking about is dipole gain (I am a bit
of an ignoramus I'm afraid) Can anyone give me a basic approximate formula
for the variation of gain with frequency for frequencies that are up to a
factor of (say) 10 away (above and below) from the
Clause 1.7.2 says safety related markings should be in a language acceptable in
the destination country. Since the markings are in English only, the power
supply
may be installed in the English speaking provinces without any problem. The
Province of Quebec has language laws and regulations. A
Ed's answer is right on as usual. I would add a few particulars. The
effective height of a tuned dipole driving a matched load is its physical
length divided by pi. The source impedance of a tuned dipole is 72 Ohms.
Those two facts will allow you to calculate the power available at the
antenna
-Original Message-
From: k3row [mailto:k3...@eurobell.co.uk]
Sent: Friday, August 02, 2002 2:03 PM
To: emc-p...@majordomo.ieee.org
Subject: Rf flammable atmosphere ignition and Halfwave Dipoles
Can anyone help me?
The overall context of this question is the extraction efficiency of a
The areas Zone 1 and 2 are defined by EN 60079-14
EEx d is type of protection flameproof, defined by EN 50014, and is
suitable in Zone 1.
EEx n includes type of protection nA, nC, and nR, defined by EN 50021 and
are suitable for Zone 2.
Take a look at
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