Electronics Forum / Basics / September 2006

Can you share with me what is the major difference between a logic mos
and I/O mos?
Does IO mos has longer gate length or thicker gate oxide or longer
width...?

Anyone ever replace the LCD display on such a radio (subject)? I would think
it would be easy if one knew the replacement part. C. Crane will do it for
$25 if I send it in. I don't really want to be without the radio for long,
but maybe it's the easiest way.

I just got a 7400-series assortment from Jameco.  Looks like there's a
lot of neat stuff in here (I'm still going through them all, looking
them up and seeing what I've got).  It looks like there are some
redundancies- i.e. sets of gates in non-shottky, some in shottky, etc.

can u help me make a triac turn on and off a 12vdc 2amp circuit?

Hi Folks..
I'm looking for a bit of info on a Field Strength meter  for detecting
EPIRB 406MHz and 121.5MHz signals.
My reason for asking is that I am part of our local coastguard unit

I thought I had seen a 555 circuit with a 50% duty cycle and variable
frequency.
It used two diodes in the charge/discharge circuit.
I can't seem to locate the schematic.

... for a beginner?
And what's the difference, anyway, between the AVR and the ATxxxxxxxx
series of chips?
TIA

I'm working on a project in which I need to calculate some noise
parameters of a signal in order to give an idea how the system noise
changes in the time: in short, the user should measure this parameters
every week, in order to see if the noise has changed.

How do I? I want to use a personal computer to switch 2.5 V Christmas
bulbs on and off, individually. First, let me state: I have a very
crudimentary knowledge of electronics and an in-depth knowledge of
computer programming (of some kinds).

I wanted to amplify a TTL-level 1MHz square wave a bit so that it can
be used as a clock for a CMOS counter running from 9V. According to
LT-Spice the circuit below works fine, but the real world does not
agree (at all). Actually I measured a cut-off frequency of 165kHz and

I'm trying to setup my baby's rocker, which currently uses 4 "D"
batteries.  I'd like to have this work an AC power unit.  I was
thinking about purchasing a 6V power adapter and connecting to the
rocker, does this make sense or does anyone have any suggestions?

I am trying to find if there is an equivalent in electronic (most
probably digital) for some common programming language.
What would be the equivalent of 'if - then' , 'else'  etc...
I am builing a digial circuits with inverters , Nand gates etc.. but

Hi to all !
I need some help with calculation.
I have 12 DC car battery and convertor for 220 AC with 150W output.
Questions:

I am trying to build a simple A/D convertor from a schematic on my
breadboard.
Now, I've built something, but I'm not sure that it's wired
correctly...

Would a multi turn coil, a metre or two in diameter, buried beneath the
surfce of a driveway, with the ends of the coil connected to the input pins
of a operational amplifier serve as a reliable vehicle detector?
R