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Date: Sat May 6, 2006 7:22pm(PDT) through to input as the stage where fighter jets. It's not the planes that going slowing them down. ---------------------- Robert, I know what you meant, but... Maybe

Dave, here you can find some basic stuff: http://www.west.asu.edu/rlerman/PDF%20Files/Audio%20Schematics2.pdf Bye. Giuliano

Just a crystal with two electrodes. Bends when you apply voltage, generates voltage if you bend it. Looks a lot like a capacitor electrically. I think it was discovered by the french, and really took

I have never done anything with a piezo element. I have seen projects that would measure all kings of things. sounds pressures as well as a few others. is there a very simple introduction to these

Barry Savage wrote: (snip) If those two elements experience essentially the same vibration phase, then the series combination will produce twice the voltage of one. That first if is the big

Ah-ha! That is probably what made that pop into my head the other. You and I were talking about that book - I will have to dive back into it some night this week again! Thanks for the reminder! Chris

Do you have the CMOS Cookbook? Don Lancaster goes into some designs for such stuff in there... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this

OK, guys, Here is a puzzle for you. First let me set up the situation. I belong to a Yahoo Group whose members build guitars out of cigar boxes. Currently they are discussing using ceramic piezo

Thanks! That's a great resource - looking over it right now, Chris wrote: parts. with touch not

Thanks, I will look into them more. I am not sure if they would be good for general use machine controls, but here in my shop things are kept pretty glean - "Cleanliness is next to Godliness in the

There are different types, some with two electrodes between which you make a circuit, some with one electrode that work with body capacity and currents leaked to earth, and some even without

http://www.discovercircuits.com/C/capacitance-sw.htm Giuliano.

Hi guys, I remember seeing these things years back but they have since gone away. It worked like a switch but it appeared to have no moving parts. Rather, there were two electrode sticking up and you

Robert, Speaking of fighter jets. When I was working for GEC Avionics on Head Up displays (HUDs) we scanned the switch inputs at 5Hz. Cheers, Peter Robert Hedan wrote:

My only thought on this is that the "push button" should initiate a signal at least slightly longer than one cycle of your scan. Say you are scanning 10 times per second and one of your controls is a

Chris, I don't have any 'qualified engineering education' to share with you, but I have putzed around with something really close to this issue. As you know, my project involves computer gaming,

Went to Hosstraders (THE hamfest here in New England), found a few things (an HP sine wave generator, old, and a freebie function generator too); but the best find was an AC voltmeter. 1mV to 300V,

In the past I've used 10k and 0.1uF on reset lines (for logic not micros--the PIC's I've used have power up delay that I can turn on for this sort of thing); gives a cheap delay until the PS settles.