Electronics Forum / Electrical Engineering / May 2007

Dear friends,
Can anyone tell me except R.Stahl, CEAG and ATX, is there any
manufacturer producing EExde MCB?
There's a project requiring many distribution panels and the general

I'm thinking about implementing some data compression algorithms on an FPGA
(Xilinx Virtex-II) using VHDL. Because speed and FPGA utilization are very
important in this respect, I'd like to get some basic idea about complexity
and achieveable speed before starting.

I have a meter that monitors electrical energy use using a clamp on
sensor.  The result is transmitted wirelessly to a display.  I would
like to log the usage over time but when I measure the voltage across
the clamp meter using a DMM it is zero.  Is this to be expected?  Is

I'm looking at a datasheet for a CD4013BC D-flip flop.
The current for a high output states -0.36mA @ 5volts
Three questions:
Why is a high output called negative current when I would think it's

I'm updating a row of 10 street lights. New fittings are 150W Metal
Halide.
I was wondering... Cut off (when opened it kills the power) fuse
holders have been supplied with the 8m Poles...they sit withn the

An oxyacetylene flame -- due to its high temperature -- can cause
nearby air molecules to ionize. Does this ionization cause electrical
disturbances that can be heard on an AM radio? If my neighbor is using
an oxyacetylene torch will I hear the electric noise on my AM radio?

I have built a flatbed printer from an old Epson Stylus 640 but need to fool
the
printer into thinking there is paper in, when the drive stepper is disabled
I have tried timing relays but can't get it right. Does any clever person

I have a TV projector that is mounted on the ceiling and plugs into a
nearby outlet, also on the ceiling.  Although it's nice that I don't
need to run a power cord along the ceiling to a wall outlet, there is
one drawback: I can't plug in a UPS (uninterruptible power supply).  I

The Car and Deep Cycle Battery FAQ Web pages have been moved.  They
are located at http://www.batteryfaq.org/.  The latest version is 7.0,
dated May 28, 2007.
The FAQ is consumer oriented with answers to questions about lead-acid

Fixed a 26" Gateway LCD TV/monitor (bad solder joint in the SMPS).
But exposing the component side of the power supply requires pulling off 2
heat sinks that are glued to the tops of the 2 transformers. Some of the glue
pulled off of the top of one transformer (about 3/16 inch, ...

Relax - you already knew this. Conductor resistance is a function of
conductor temperature and conductor temperature is a function of amperage
which is a function of restance.... Interesting circular influences there.
Fortunately, as temperature increases so does resistance. ...

An interesting thing happened in the drawing room tonight.. a standard
40W incandescent lamp failed as I switched the room lights on.
What I saw was a bright flash and a red/white hot something leave the
wall lamp and travel some 8 foot to the floor.

Dears
I've got an intense mag-field (f=100kHz, amplitude=200Gs),
but no suitable detectors could be applied to it to make an acuurate
measurement.

One of my favorite things in the world died, my Oster 6710 blender.
It will not power on.  They do not sell it anymore.  I took it apart,
hoping maybe there was a easiler identifiable fuse I could replace,
but to no avail.

Hi all. We were discussing controlling the speed of a dremel ( high
speed low torque drill ),
http://www.instructables.com/id/SRWK8Q72Y7EZBF9BUX/#CCCHJSHF1U9XVKQ
In the example of converting a sewing machine on this page,