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Author Topic: Unknown Switch: Olivetti Numpad  (Read 1247 times)

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Offline Tarkoon

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  • Posts: 94
Unknown Switch: Olivetti Numpad
« on: Wed, 11 April 2012, 13:17:59 »
Hi, today I got a Numpad from Olivetti and found that it uses a mechanical switch, that I never saw before...
Could you help me find out more about it?

Here are the photos:

[ Attachment Invalid Or Does Not Exist ] 48107[/ATTACH] [ Attachment Invalid Or Does Not Exist ] 48098[/ATTACH] [ Attachment Invalid Or Does Not Exist ] 48102[/ATTACH]
[ Attachment Invalid Or Does Not Exist ] 48109[/ATTACH] [ Attachment Invalid Or Does Not Exist ] 48099[/ATTACH] [ Attachment Invalid Or Does Not Exist ] 48103[/ATTACH]
[ Attachment Invalid Or Does Not Exist ] 48105[/ATTACH] [ Attachment Invalid Or Does Not Exist ] 48097[/ATTACH]
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Offline Quarzac

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Unknown Switch: Olivetti Numpad
« Reply #1 on: Wed, 11 April 2012, 15:16:15 »
I think most Olivetti things are rubber dome, though I cannot say this with 100 percent certainty.
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Offline Ascaii

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  • Location: Berlin, Germany
Unknown Switch: Olivetti Numpad
« Reply #2 on: Wed, 11 April 2012, 15:27:54 »
That clearly is a Mitsumi switch. I have found these switches in a Chicony board (teal green), as well as in a pair of Quantel Video editing consoles (pink and lemon stem). All three boards are with Haata in the US, if you want more info on the switch, get in touch with him.

The switches I found actually used an ALPS stem, but yours seem to be made for a rectangular stem.
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Offline Tarkoon

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Unknown Switch: Olivetti Numpad
« Reply #3 on: Wed, 11 April 2012, 16:12:18 »
The color of the stems is a bit off on these photos. It's more yellow than white in reality.
I also found a Mitsumi label now on the PCB, so the company seems to be correct.
And of course this is a mechanical switch and no rubber dome!
The feeling is a little bit like MX clears - tactile without click.
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