Electronics Forum / Components / July 2004

Is there such a thing as a web based distributor(s) for asian electronic
components?
You know kind of like the Digi key of Japan or the Newark of  Hong Kong?
Places where you can actually use a charge card maybe and tap into some of

I don't know anything about electronics, but I'm willing to learn if this
project is possible: I'd like to build a very compact timer that runs on AC
115v 60hz. It would consist of a simple clock circuit that outputs to some
kind of programmable logic circuit. This circuit would be ...

Anyone know where to find these at a reasonable price? Looking for
DB25/15/9 style punches for sheet metal...spent an hour on Google with
no success so far...sigh...
Thanks,

Hi, I am trying to find a chip that has all of the characteristics of the
74LS221, except that it will operate at 12 Volts rather than the 5 Volts
for the 74LS221. I would appreciate any help.
                         RADIOMAN

I have just begun a project for a device that will be submerged in pool
water. The depth will be a maximum of ten feet. I am trying to find sealed
and booted rocker and toggle switches that will withstand continuous
submersion in pool water with a chlorine content of 2-3 ppm. I am ...

After the demise of Tech America a.k.a. Radio Shack Commercial, what are the
good places in Atlanta to buy electronic components?
I know about RS Electronics and Austin Electronics.  Haven't been to Ack in
a long time but assume it's still there.  What else?

SMD packaged ceramic resonators from ECS are showing up electrically
leaky in from one of the in/out terminals to the central ground
terminal.  This is causing a full inventory re-work and even a field
recall of over 1,000 finished assemblies.  Serious and expensive

How can i do to convert from PAL to B/N VGA

Many decades ago at my then favorite surplus electronics shop I found a
transformer that was about 1"x1"x1" which turned out to be a 1:1 transformer
with about 10 ma max output with a 110V 60Hz AC line input.  I quickly
installed it in my shop-built bench power supply as a "safe" ...

Can i get some links ?
I need a SMPS to make a 240Vac /20V dc converter in a 50W power range
Any hints ?
I noticed that most transformers are custom made, but there must be some

(I was trying to use an ATX supply before, but it seemed more complicated,
so...)
There is a switch on this AT-style power supply that I have now (of course).
I stripped off the ends of one of the hard drive connectors, making sure

and maybe also a stupid question too ...  what is the difference between a
PIC
chip (such as a 16F84) and the "A" version (such as a 16F84A) of that same
chip???

Ok, this is a bit off topic, but not quite as off-topic as "Lisa Simpsons
Breasts"
I'm looking for a article that was in Popular Science, or Popular Mechanics.
This article was about a Florida based company, that I believe was called

For a DIY GPS receiver project i'm looking for a switching regulator
that can produce 3.3V @ 200mA from an input range of 4,5 to 30V.
The National LM3485 seems to be able to do this, but is smd (not DIY
friendly) and needs an external FET.

First advertisement in Allied Catalog for Transistors? - 1953 wowzers!
The advances they have made since then.
http://www.savepic.com/freepicturehosting/is.php?i=216715&img=Allied_1953.gif
BTW if anyone has any of those Raytheon CK716's Laying around, please