Electronics Forum / Electronics / December 2004

I am a student studying analog circuits and I am having hard time
understanding loading effect in feedback.
Some books say when we cut the loop, we need to load
the output of the opamp with feedback network beta and the opamp input

Not sure if this is the right forum, but anyway...
Just scratching around, I found a story by someone called T Henry Moray.
Apparently he invented a machine that collected electricity from the ZPE
field.

I have the above unit minus a power supply or any form of documentation. IF
anyone was able to provide some information (well any information) I would
be eternally grateful.
Cheers,

Has anyone got any tips or suggestions on the best way to cut a blank single
sided PCB to size. I require a blank 300mm by 150mm as a 300mm by 300mm PCB
is too large so I'll have to cut it in half.
Charles L

Does anyone have any ideas as to how to safely power a satellite dish
LNB downconverter so I can plug it into a scanning radio receiver
without toasting either ?
I've an old foxtel dish and LNB that i'd like to experiment with rather

Oscilloscope TRIO (Kenwood), 15Mhz?, lots of features, made in Japan,
mint condition - $100 ono
please reply directly: garecruit@alphalink.com.au

I know there are a lot of variables but could someone point me to ball park
figures for various lighting technologies?
For example manufacturers (optimistically?) claim an 11W flourescent lamp
produces about the same amount of light as a 60W incandescent.

all,
can anyone tell me what are the following ic's with nec part numbers:
d4049ubc
d4081bc

I have a year 2000 toshiba 6 disc dvd player, it can't play my burned
cd-r, I presume it will be same with burned dvd, is there a brand/model
of dvd-r virgin disc that I can use for burn copy who can be played by
older dvd players like mine ?

I have a Matrox Millenium video card without the Input/Output cable.
I require a 26-Pin Male connector that I can solder my wires to or a
connector already wired with a cable that has 26 pins wired.
For details on this connector, visit http://home.cogeco.ca/~amph/xlio.htm

I cant seem to find information anywhere on coil wrapping techniques.
If I wanted to build an motor or solar cell, what's the most efficient way
to make
copper coils?

Greetings group.
I am looking for a couple of JRC4558D op-amp chips.
I have found JRC4558C in Speedy Spares catalog.
Does anyone know the difference between C and D?

I have a software for recognising individual voices. Can you suggest
some very "INNOVATIVE" hardware applications using this tool.

My Pannasonic TC29V26A has shows a snowy picture about 2 min after
switch on.
Pic comes up perfect when I turn it on, but then begins to show snow -
snow seems to fade in - sound stays OK - at times this goes to

Search schema inside and brochage of this I.C. Lambda ? (pdf file ?) for
Power Supply
Thank you
Merci beaucoup