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Yes.. you are right. But you have to take in account that the traffic is huge. So if it is a packet network, the demands of switching will be very very high. So you will be talking about giga or tera routers. And you have to take in account that you are probably carrying part of the traffic of...
Hard to say. It is an optical network. Good answers would by both. It carries circuit switch and packet switch type of traffic. As far I know, a submarine cable packs many fiber optics. Over each fiber are carrying optical communications. Each fiber carries many optical signals multiplexed in...
I agree with dfullmer, best choice is to use a shunt. A dc current of 1000 amps is not a big deal for a shunt and you can achieve good precision and linearity.
Regards
Gil
An Ultrasonic welding system can produce the body effects that you describe. An it is easy to check, use a microphone or a cristal resonator connected to one oscilloscope or millivoltmeter. To produce the body effects that you describe, the level of power involved must be important.
By the way...
It seems that a detonation due to the interaction of vapor of petroleum and cellular phones is a rare event.
But it is not an intrinsically safe situation. If an amount of detonable gas is located close to a device with enough energy stored then a rare event could happen.
May be that the...
Hi Klug,
Very interesting posting.
You have successfully triggered my curiosity: How can a bunch of empty tubes could be so good in capturing dim sounds??.
I downloaded a translated version of the page in Russian (thanks Babel Fish). I also have found an article written in English that...
Re: GPS and this crazy IDEA!
Hi eltonjohn,
interesting service… but as far I know, present GPS network it is not enough to guarantee the required coverage. For instance there is no coverage inside in almost all indoors sites with the present generations of GPS satellites. So it is necessary...
Re: Fuel sensor
Mesuaring level using Ultrasound waves could be a bit difficult in a bike tank. Two reasons come to my mind:
a) Waves on the surface of gasoline produced by the movement of the bike inside the tank could produce inaccuracies, and filtering it could result very difficult.
b)...
Interesting topic. Please remember that lamps could have VERY large current when burn out. It can be something like 20 or more times the normal current of the lamp and last at least half hemicycle. It is produced by the ionization of the gas inside the lamp when the lamp filament is cut by any...
Hi Z80,
Polarity reversal is one of the methods used to tell to a coin box, PABX or a private meter that the phone call has started (B part answered the call) or that it should increment a private meter in one pulse. This service is not available for regular users. Depending on the telephone...
Re: Speed measurement
Hi,
Have you considered using a GPS receiver? It works pretty well measuring speed. However, this approach has some drawbacks: GSPs would have some troubles in urban canyons, under a thick forest or inside buildings.
Please find a very good explanation about resonance frequency in loaded and unloaded piezoelectric stacks on these links.
ultrasonics transducers1
ultrasonics transducers2
A usual strategy is to find the frequency of series resonance (please see the papers). Samples of output voltage and...
Hi
I am looking for a paper about how to calculate Spare Parts for a network.
Basically I have seen one equation from ericsson and another base on a work of Blanchard, but there were not demostrations. The equation from blanchard seems to be based on a Poisson process.
Thanks in advance
gil
Hi all,
I am working on a large point to multipoint network. And I'm trying to calculate system availability... What I need are real figures about failure intensity on installation part, like connectors, antennas, cables, etc. Any idea where can I find it?
Another question: any typical figures...
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