Electronics Forum / Basics / May 2007

Sorry for all the posts but this will be the last one and then if I have any
more questions I'll wait and group them together.
I'm curious, again, as to if there is any way to make a diode's knee
smoother. I know that one can use an opamp to make an active diode but I'm

http://www.geofex.com/Article_Folders/TStech/tsxtech.htm
I'm curious to why in the above analysis and circuit that the input state is
an emitter-follower instead of directly going into the non-inverting input
of the op amp?

Hey, all, I have about 4 of my 5 acres fenced to contain my dogs (I
have to keep them fenced since someone, I don't know for sure who,
around here shoots dogs).  I have fenced most of my 5 acres so they're
not just in some little pen but they kept digging out.  To deter that

The real problem is change. Islamic terrorists are afraid of change.
They use religion as a propaganda too just like we tried to use those
colored terror alerts. It is all about who has the better machine to
propagate change. The problem is that their system is too static, the

I came across this link recently - an archive of ELEKTOR content from
1995-2006 (undoubtably ILLEGALLY lifted of CD-ROMS) and wondered if
there are any collectors of the really old issues out there, or indeed
owners of the 300 series of Elektor circuit books.

Please excuse the beginner questions; this is my first attempt at
etching a PCB.
I bought some 2oz dbl sided boards, and will be etching them using
Sodium Persulphate. I've done the traces using press-n-peal blue. I do

I try to build a power supply. Therefore I would like to simulate my
circuit with the student version of Pspice. I find some models of
voltage regulaters on the internet. Now I ask, if it possible to use
these models with the limited version of PSpice. Has anyone of you put

So, I'm sitting and reading the 74LS-databook just for the sake of getting
a wider view of what's available out there, which in turn hopefully learns
me more about electronics.
I got stuck on 74LS245, an octal bus transceiver.

I'm trying to order wire for a stripboard project of mine but I'm not sure
what kind of wire I should order (size, SWG, insulation etc).
Any suggestions?
Thanks!

Electronics product Dealers here in Europe we have all kinds of
Telecommunication product such as Mobile Phones,Laptop,Ipod,PDA,
Nintendo wii,Plasma TV,Xbox, Psp and Ps2 and mp3 which are under
electronics.

I am looking to use a basic stamp controlled (with a ULN2003 chip)
stepper motor in a small (pocket sized), battery powered prototype. it
doesnt need much torque at all. the problem is i dont know much at all
about stepper motors...specifically which one to use.

I need testers to test this new independent stream...
http://www.nikmook.com/cgi-bin/listen.pls
conection kindly apriciated
Mat

Electronics product Dealers here in Europe we have all kinds of
Telecommunication product such as Mobile Phones,Laptop,Ipod,PDA,
Nintendo wii,Plasma TV,Xbox, Psp and Ps2 and mp3 which are under
electronics.

I have a 5 V DC signal from a trigger that I need to delay for 50 ms
before it reaches a synchronizer.  Is there an easy, simple means of
achieving this?

The ideal diode equation seems to predict that for a given current
there will be a fixed ratio between temperature and voltage.  I took
some measurements and worked out the equation for several diodes, and
also plotted the values on graph paper.  For all of the diodes I