T&L Publications

That makes sense, however the clock I'm looking at is one of these electronic-driven mechanicals with a pulsed coil driving a round magnet driving some gears driving......the clock hands. Maybe it's me, but to have that coil fired 31 million times a year, from a AA, with accuracy is an engineering m...

http://www.worldaeroplast.co.th/Universal.htm
Any help, Chava?

Anybody know how these cheapo clocks can run on a AA battery, and keep good time for a year? The component list is: 1 IC, 1 39 pfd disc cap, 1 tuning cap, and one crystal-like resonator. And the coil to pulse a disc magnet. Is the IC functionally the same as a 555 timer, but somehow runs on 1.5 volts?

Chava, we need more info alright!
We don't yet know if it is RF or IR!
Hell, it may be ultrasonic!

Call me lazy, but a small float switch to open a solenoid valve with a flow restrictor seems easier. Could be battery operated, solar powered.

I look at it as a new tool, semiconductor technology, turned loose on the imagination of designers. Suddenly they could design dozens then millions of devices in a single small package.
Like introducing a wood saw to the home building industry way back when.
Why so many? Because they can.

Sorry, just have to......
http://wireless.ecademy.com/node.php?id=17430

Analogous to mapmakers that purposely put erroneous info on their maps. If Joe Blow decides to become a "mapmaker" by copying and selling those maps, he is jailed for infringement due to the "errors" that the real mapmaker added. I fabricated semis before, and the way we "ge...

And to take a peek at some chip designers artwork:
http://micro.magnet.fsu.edu/creatures/index.html

tj may have meant Maxim.
www.maxim-ic.com

Externet, there are electrolytic desalinization processes, but is a very expensive way to get the salt out. Reverse osmosis, de-ionization, molecular sieves are all effective to a degree, but also expensive. We find a cheap way to do it, and well, rich isn't the word for it! $$$$$$$$$$!

Yes Michael, it will dial up to 4 telephone numbers until it makes a human connection.
Check out: http://www.x10.com/security/x10_ds7000.htm

Do you simply want to count these metal pieces, and if so, what sort of rate would they be going through the detector? One/hr, one/millisecond etc.?

Just another fairly effective way of eliminating reverse engineering of their circuits as well as making repairs difficult. They build just fine, because the mfg knows whats where, but lo, the user/repair tech is left in the dark.

Bern, if you're going to detect particles down to grains of sand-size, and up to 1/4", I think ultrasonics would be a better option. Depends also on flow rate, and the actual contents of the liquid. Any more details?