How would you classify Litz wire?
Fred Townsend wrote:
Is this right?
Not necessarily. Braid may or may not be hollow. Look at the braid
frequently
used for the battery ground lead on automobiles. Braid is frequently used for
bonding large metals parts such as engine to body on your car.
The ribbon referenced here is a single conductor. Sometimes I make them
from
sheets of copper or brass. They are not normally used where the environment
contains motion or vibration. However they are ideal for making a mobius loop
to non inductively feed the cathode of a high power transmitting tube.
The term ribbon is not distinct and may include braided ribbons.
[email protected] wrote:
It is my understanding that the following terms apply. If not,
please
elaborate/correct.
Braid - bare small gauge wires woven into a general hollow tube
shape,
intended to be used as shielding
Ribbon - flat shape, multiple conductors insulated from each
other, solid
or [7? wires bare fibre wires?] to make each conductor.
Solid Ribbon - flat shape, multiple conductors insulated from
each other,
solid wire conductors.
Is this right?
Robert
Brian:
I include braid in the category of ribbon without
distinction. However
braid is superior to solid ribbon for most applications
because it is
easier to work with. i.e. when connecting braid to a
screw terminal I
spread the braid out and slip the screw between (with
flat or star
washer) strands. It also has lower skin effect at RF
frequencies. Solid
ribbon must be crimped, drilled, or punched for screw
terminals. The
exception is solid ribbon is superior when using mobius
loops.
Silver braid is superior for RF but needs to be
protected from corrosion
to stay effective. I use ordinary tined braid for
pulse generators.
Regards,
Fred Townsend
Brian O'Connell wrote:
For this particular application, how does the
ribbon stuff compares to
braided ground straps?
I am about to build something similar, and
would like to know if someone
has already experimented with this.
thanks,
Brian
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Fred
Townsend
Sent: Wednesday, November 04, 2009 10:36 AM
To: [email protected]
Cc: [email protected];
[email protected]
Subject: Re: [PSES] Discharge capacitors
Derek : I think Orin offers good advice. You
also need to pay attention
to your network geometry. i.e. Inductance is
your enemy. Two 10 uF caps
in parallel are better than one 20 uF. Straight
runs of ribbon wire are
better than coils of round wire.
Regards,
Fred Townsend
DC to Light
[email protected] wrote:
The usual suspects are NWL in North Carolina,
CSI in California, and
General Atomics (formerly Maxwell). They all
know what they are doing
and have low inductance pulse rated caps
capable of multi-kiloamp
discharge peaks.
Orin Laney / Atwood Research
On Wed, 4 Nov 2009 11:04:51 -0500
[email protected] writes:
Good morning folks,
I have been working on improving the quality of
my lightning simulator
and have come to the conclusion that I need
better capacitors.
Can anyone share their opinions on
manufacturers and/or models that are
appropriate.
An offline response may be appropriate.
Sincerely,
Derek Walton
L F Research
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