Electronics Forum / Electrical Engineering / July 2003

I have a problem of understanding concerning the power a motor should
deliver. In europe, normally the powere is measured in kW, while at
the US-Net, it is given in HP. As example, a supplier speaks of 200kW
at european 460V/50Hz-Net and of 250 HP at the US-Net with 480V/60Hz.

I have been given the following problem for a college assignment. I
was hoping that someone with more knowledge than I could help me out;
Operational amplifier (op-amps), which have negative feedback applied,
can have their overall gain fixed using a simple resistor network in

A client of mine recently moved from one office building to another
in the same general area.
Unlike their previous location, there have been a number of
electrical "events" in the new building, and I'm beginning to

I'm a female EE that's been laid off for almost a year now.  I've been
getting calls left and right from temporary contractors about jobs
that never develop (never hear back from them, job put on hold, job
cancelled, client hired someone internal, etc.).  I usually get as far

Hy Group
I Am searching for a second-hand Thyristor  4Quadrant DC power supply for Dc
motor 440 Volts 250Kw 610Amps
Primairy power is 400 Volts three phase 50Hz

 My home is 20 years old. Do circuit breakers ever need to be replaced with
age? Steven

http://home.comcast.net/~bernhard36/honda-ad.html
wow.
Dave

Can someone clarify this for me please...
1.Cable for electric shower should be 10mm size
2.Cable should be connected directly to the mains fuse box.
I am not doing electrics just routing the cable before I get qualifyed person

I'm thinking about buying a laptop PC that includes a Firewire port. I'm
wondering how useful a laptop with a Firewire port would be in the present
and future world of controls engineering. (This PC also has 2 USB 2.0 ports
for external serial communications.) I guess that these ...

A few months ago i had some water that leaked into the elctrical box. I
managed to dry it an it would turn back on again. Now i can't get the
switch that controls the bathroom lights to stay on . It keeps tripping
off. Any ideas on how i can get this to stay on..

I am an electrician in Ireland, and came across a problem a few days
ago.
I was investigating why a motor of a washing machine in a commercial
laundry would not spin correctly and found the cables going from the

Does anybody know what the IEC (which number of standart?) color
standards are for 3 phase mains (for Europe, for US, for UK)?
For information, in Russia use -
L1-yellow

I am going to try my hand at some switching supplies that are fairly high
power.  Can anyone recommend a simple reference to calculate inductors?
Thanks in advance
Craig

My dad put a 220 line in my storage room because of a vent problem where
it was before
it was working for two weeks then it quit so I don't know if it's my
dryer or the line

I'd like to be able to run outside-premises networking cable (OSP Cat5e
4-pair) into a building. An empty 1-1/4 inch plastic conduit already runs
from the entry point to the wiring closet, however it is about 80 feet long.
Since this exceeds the 50-foot maximum for running the OSP ...