What is This???

[wheelman]

http://img47.photobucket.com/albums/v144/devnull/techj/IMG_4952.jpg

urrr....ummm....what is it? ??? ???

[Chris]

I think that it's one of those things that are placed on cables like power cables and it's supposed to provide a shielding from interference.

OK, having displayed my ignorance will someone tell is what it REALLY does? ;D

[wheelman]

I think that it's one of those things that are placed on cables like power cables and it's supposed to provide a shielding from interference.

OK, having displayed my ignorance will someone tell is what it REALLY does? ;D


;D ;D ahahah...thats sounds like how I was explaining it and then i got fed up...

At my work place they're on Network Cables and Power Cables.

Anyone know the right name for it??

[GodKid]

Just a stab.. In-Line Conditioners

[deakie]

looks like a pair of suppressors.
they actually kill sudden spikes in the electric supply as caused from machinery turning on or off or lightning activity.

as it stands, the material forming the inner core would be some ferrous type material and the effect would be by inductance. As a magnetic field relies on a rate of change in current, the spike on the line is dampened by the ferrous material absorbing the magnetic field, hence reducing the spike.
Please correct me if im wrong.....

[wheelman]

looks like a pair of suppressors.
they actually kill sudden spikes in the electric supply as caused from machinery turning on or off or lightning activity.

as it stands, the material forming the inner core would be some ferrous type material and the effect would be by inductance. As a magnetic field relies on a rate of change in current, the spike on the line is dampened by the ferrous material absorbing the magnetic field, hence reducing the spike.
Please correct me if im wrong.....



Thats kinda teh problem, we don't know if you're wrong, you could tell us or atleast me that it came form outer space and I'd belive you...well maybe not but you get what I'm saying.

[Nastrodamus]

Inline suppressor......I think ;D

[tech_guru]

Was checking for a console cable in our srtore room and found a couple of these same strange looking gizmos... ??? ???

Inline Supressors you say huh???

[matronyx]

I think it's a type of Impulse (Surge) Suppressor.
They are supposed to protect equipment connected to your network from surges caused by lightning.

Or it could well be something that devnull hacked together to show just how much we know...
::)

[Arch_Angel]

It looks like a broken pencil/pen holder. Correct me if I'm wrong!

[GodKid]

yups.. i think they're in-line power conditioners... like deakie said.. they ensure that what reaches your machine is mostly clean power (no spikes) rather than dirty power...

It's a cheap way of reducing the damamge caused by dirty power and an alternative to a UPS... or a set line conditioner.

I've found smaller versions on laptop power cables as well...

[deakie]

ok....looking at it, it appears the innards is made of iron.....if so then what explains the 2 outlets at the side?
chris alluded to the fact that they would bind around a cable, which also seems logical to me.

now if indeedy, it is metal in the middle, then its most likely its iron or some kinda ferrite material. when used in this way, it is for filtering, but magnetic fields, not voltage ones. a voltage spike would cause a rush or spike of current too which in turn causes a spike in the mag field. the ferrous material then absorbs this mag field and prevents it from going anywhere quick, hence you get a kind of resistance to the spike itself. normally used for emi shielding on equipment sensitive to that kinda thing.

the suppressor that nastro mentions, works on a similar basis but uses coils where the mag field induced in the coil refuses to change quickly beyond its intended frequency range as determined by the coils value. this can however, ramp the voltage, so choice must be good.

beautiful thing about this device. its how your car ignition coil works. by sending in a rush of current on a primary coil, the voltage at the terminals on the secondary coil, rises so much, that it breaks the insulation of air between the electrodes on the spark plug and you get cureent flow which ignites the petrol. :P

there is also the capacitor type variety which instead of being in series with the line, like a coil, is in parallel across the circuit. this provides a rapid path for a changing voltage to go to ground. this too relies on the the value of the frequency and cap. the smaller the caps value, the higher the frequencies that will be shoved to ground.

all these tricks rely solely on a changing current field. they have no effect whatsover on dc currents.
hence my reasoning.
gillion can correct any mistakes i have made in the explanation.

im gonna find the correct name for ya and give you a reference site....k

[OE]

I appears to be a "clip on" ferrite EMI supressor. "Attaching a ferrite to a cable or looping a cable through a ferrite can help reduce unwanted high-frequency interference".


Regards,

OE

[deakie]

ok, here ya go...they go by the names of cable ferrites....

here are a couple of sites that sells them and you can see how many different styles there are..... :D

http://www.ce-mag.com/archive/02/11/may.html

http://www.ferrishield.com/

hope this helps you to explain it to those wanting to know dev....

[wheelman]

Thanks everyone and Thanks Deakie.

[deakie]

pleasure dude..... ;D

[Chris]

Looks like OE and Deakie came up with the proper name. At least we can now stop calling it "that-thinga-ma-jig" ;D