Capacitive Keytronic Keyboard

[microsoft windows]

l found this old Keytronic keyboard in the garbage at work.It's model E03417XTAT. lt's got double-shot keys and interesting key switches that register a key stroke before l fully depress them, leading me to think that they're capacitive switches. Does anybody here know about capacitive keyboards from Key Tronic?

[kps]

Keytronic did a lot of foam-and-foil. But don't nearly all kinds of key switch register before fully depressed?

[microsoft windows]

You should find better things to do with your life than say dumb things on forums.

[microsoft windows]

Keytronic did a lot of foam-and-foil. But don't nearly all kinds of key switch register before fully depressed?

These key switches bottom out quite hard, but l only need to press them down a tiny bit in order to register a key stroke. Sometimes, if l even rest my hand lightly on the Enter key, it'll sometimes record a key stroke.

 lt's an interesting keyboard. l'm not sure if l've ever seen anything like it. Each key's also got a separate rubber dome that sits between the keycap and the switch to provide some tactile feedback. lf l take the rubber dome out, the weight of the key cap causes the key switch to just fall down to the bottom, and the key sticks.

Maybe l'll take apart a switch on it some time to get to the bottom of this.

[microsoft windows]

Here's some photos of the keyboard.



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[kps]

Maybe l'll take apart a switch on it some time to get to the bottom of this.

Ah, well, since you've stumped The Number One Keyboard Expert On The Planet™ — and since I have a keyboard with the same switches — I'll save you the trouble. It is a capacitive foam-and-foil.

[megnin]

I found this topic and thought I'd add some pics of a Key Tronic I got a few years ago and the original DAS Keyboard.  They appear to be identical and both have what I assume are capacitive foam-and-foil switches.  The keys on both are also "ergo weighted" from 35 grams to 80 grams.
http://www.computermart.com/e03600qlps2.htm
Force levels used on KeyTronicEMS keyboards with Ergo Technology.
Ref:  http://www.freeopenbook.com/upgrading-repairing-pc/ch18lev1sec2.html
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[Findecanor]

They appear to be identical and both have what I assume are capacitive foam-and-foil switches.
[...]
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No, that is a rubber dome. Good rubber dome, though. For years, I used nothing but Key Tronic rubber domes -- nothing else compared.

Here's some photos of the keyboard.



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Except for the national layout, that looks precisely like a KeyTronic that I have, which I have taken apart and confirmed having capacitative foam-and-foil switches. Mine had a quite mushy landing, though.

One silly thing that you can do is to take it apart, plug it in and type with your finger tips right on the circuit board. :-)