Electronics Forum / Electronics / February 2005

My native language is not English and I sometimes have some problems to
understand answers when using abbreviations.
Let take an example :
"It had an o/c centre led."

I built a bass guitar, and I connected the strings to the back to the
neck truss to form a loop around the pick ups. The idea is to close
the loop so that when the string vibrates, it will generate current
inside the loop that will be picked up by the pick up, and thus

Hi, having trouble find these here in Australia. Anyone know of a good
place? Thanks.
Xygt

A friend's kid brought me this pedal saying "it needs a new pot",
but it looks like a custom part - has Jim Dunlop's name on the
part. They're available, but he can't afford it. Does he have
any options? The body of the pot (sorry, it's not in front of

I need some 1.5VDC Relays (Trigger/Contact voltage).
I've check DSE, radio parts, jaycar and I'm struggling to find relays
that will trigger at this low voltage. I've found 5 and even 3.5VDC but
I need 1.5VDC.

Looking for help to find a replacement for the 4063b IC - I have a year 11
pupil who has built a circuit which requires this IC but so far the only
thing I can determine is that is either very hard to find or is plain
obsolete.

Hello To All,
                   I have a Loewe Profil 3272 (recently acquired) how do I
get the back off it.
                          Thanks  John Ely

I'm trying to teach myself electronics, and it's like hacking my way through
a jungle. Anyhow, what is the difference between a PNP and an NPN transistor
besides the compound configuration?
CJ

Hi to all,
If someone help me out here. The base of a transistors opens at 0.7 volts.
If I am using 5 volts how do I work out the resistance ? Its been a while
since I did ohms law !!

Can anybody tell me where to buy programmable portable calculator,
preferably in BASIC?
Tia
--

We purchased some 2-way radios for our children this Christmas. Since
then, lately, there has been much media attention regarding cell phone
usage being dangerous for children. These scientific studies suggest
that children under 14 years of age shouldn't use cell phones because

I am trying to work out in particular which component is most likely to
cause a reduced voltage at the supply point to its circuit. I suspect
there is something pulling too much current ahead, becuase when I
disconnect the circuit then the supplied voltage returns to normal

Call for Participation
6th IEEE International Symposium on
QUALITY ELECTRONIC DESIGN
March 21-23, 2005

Does anyone have or is familiar with designing/building a receiver for
the Polar Heart Rate Monitor transmitter?
Thanks,
Mark