Electronics Forum / Electronics / April 2008

Network cards use only 4 wires out of the 8 available in a standard Cat5e
cable for data transfer.
Say I have one local switch with a number of local computers, and two
computers in the shed a long way away, can I use the 4 spare conductors to

Just finished an "update" of my home workbench today. Thought some
people might be interested in a before and after pic:
http://www.alternatezone.com/stuff/WorkshopBeforeAfter.jpg
No prizes for guessing which is which.

I need a local supplier for a Mabuchi FC-280PC/SC 12V DC motor as used
in an automotive door lock actuator.
This is the datasheet:
http://www.mabuchi-motor.co.jp/en_US/cat_files/fc_280pcsc.pdf

I am doing a study into the early use of silicon diodes in radar and
communication equipment during the Second World War.
What I would be interested in is as follows:
-type numbers of the diodes

Does anyone know of a cheap mobile long distance (20+ miles) data
communication service that would work in a large city environment?
I'm looking into communication of prognostic data on vehicles.
Basically a bunch of vehicles would be traveling around within a

my seagate 200gb serial ATA drive had an accident and now requires
data recovery, the platters / motor are fine its just the controller
board that has been damaged .... anyway need to get a working drive
with exact model number part number and firware version in order to

Looking for 0.8mm or thinner uncladded FR4, UK if possible.
Thanks

Hi all...
a transistor "BD435" is giving me 440 in hFE test on the multimeter, when
the tecnical data i've found tell me min=40 max=475...
does this mean the transistor is really in good shape?

Weeding through all the Spam and Junk posts....maybe all the regular
'posters' are gone.
I need a response to my short question.
I am looking for someone that has a 1990 - 1994 Tektronix instrument

Opto Dynamic Surface Tension DSP spectrl dyne control ODSTM-1 at fast
moving plastic or packaging films, foils or other substrates as like
BOPP, LDPE, LLDPE, HDPE, MDPE, PET, PP, PE, PS, PO, EVA, PTFE, etc.
Introduction

   My JVC DV camcorder powers on in rec mode but powers off almost
immediately. It will record normally when connected to the AC adapter. I
have discovered that if I place some insulation tape over the middle
terminal of the battery (it has 3 terminals +, - &  T?) it will work

My several year old Digicrystal PVR started playing up some time ago,
taking ages to turn on and lock the image. It got worse recently and
then the PVR function refused to work at all.
Given all the recent similar reports on the group, I knew what the

Hi,  I'm after a robust 50VDC power supply with floating output, and
wondered whether an 'old' telephone system PSU might do. What sort of
supplies are used to source the 50V system, will they deliver clean DC
without a battery bank? Is there a disposal source of them anywhere? ...

I'm repairing an old Sansui stereo amp.  It has a faulty transistor in
the main power amp section.  It's marked A697, a TO92 package (PNP).
Would the equivalent be a 2SA697?
Is there a website with transistor equivalents on it for future

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