Electronics Forum / Electronics / January 2005

There chips with the mixture of Active HIGH and Active LOW signals. Is
there any pros and cons of each levels? OR it simply choice of
designers / manufacturers?
Thanks in advance.

Why the large memory chips has multiple VDD and GND pins? I hope the
VDD and GND are connected together while connecting it ot powersuppy
(ie., common source of powersupply).
Any help in understanding this?

What is the fundamental behind 'zero Ohm resister termination'? What
value is this 0 Ohm resister is going to add on signal integrity?
Thanks in advance.
Regards,

Is there a reference that tells exactly what the letters/numbers on an IC
mean? How about a reference that tells exactly what a specific IC does?
Thanks,
CJ

I am trying to locate a TLS1233N video pre-amp to repair a computer monitor. Have tried Prime , RSC , Farnell , WES &
Arrow , the TI distributors & have had no luck. I would be grateful if anyone has any clues as to where I might be able
to get hold of 1 of these IC's. I am in the ...

Does anyone know of any glass-bulb type mercury arc (Cooper-Hewitt)
rectifiers still operational in the Melbourne area. I'd like to have a
look at one operating.
John Mackesy

I was wondering if a specifications says that it must have leakage current
less than 0.1mA...and I measured on my meter 108mA (assuming that everything
is calibrated and accurate...)
Does that mean I can pass this measurement? I'm arguing that even though the

just wondering if anyone can tell me :
what is the mA/Hr rating of the common alkaline 9V  battery?
googling has not provided the answer

My memory is playing tricks on me.  I'm sure I read in a VCR manual
that its resolution was 312.5 lines (I'm in UK so 625 lines).  I had
assumed this meant that VCR showed the same field twice in a frame to
save tape.  But I can't find anything to say if they do or don't.  All

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=5157510282&refid=sto
re

I have a device whose power requirements are listed as following:
12.6W, 2.1 A @ 6 VDC
I have a power adapter which has the following written on it:
input: 120VAC 60Hz

I am looking for a means of monitoring/logging the 240v single phase
power quality in my home. I live in an area in Sth East Qld where we
have frequent power disturbances.
Does anyone know of a kit (preferably) or domestic quality (price) test

We are looking for a talented tech or really keen hobbyist for service work
in Melbourne.
Must be interested in musical electronics & have a genuine aptitude for
technical stuff.

Hi folks, sorry if this is not the best group for the topic, but I'm
sure that someone on this N.G. will know the answer.  I have a friend
who has a computer with no sound card as such, (it's on the mother
board) When using yahoo messenger with a hand held microphone, no

A major pain-in-the-a.s in Arizona is lightbulb lifetime, particularly
this time of year, where one day will require heat and the next not.
So the AC voltage regulation sucks... often popping up to 130VRMS.
I was wondering how Constant Voltage Transformers would perform with