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UMMR
Joined: 23 Aug 2007
Posts: 381
Location: Udine, ITALY
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 Posted: Thu Feb 25, 2010 10:30 am Post subject: Electromechanic memory |
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Hi,
this is a Siemens Pulse Repeater (circa 1960). In fact, it's an electro-mechanic memory for decimal numbers, used for years here in Italy in many semi-electronic telephone switching systems. Numbers are stored by setting the position ("up" or "down") of the metallic "slices" forming the disk (see the detail). By example, if You want to store a decimal 5, You have to set "up" five "slices". After each slice is set, the disk advances 1 position. The 2nd detail (right bottom) shows the step-by-step motion mechanism. This device is operated at 60 VDC. Years ago here in Italy, when the electro-mechanic telephone switches (owned by Telecom Italia, formerly SIP) have been replaced with more modern electronic systems, tons (literally!) of components like this one were scrapped for the joy of precious metals recyclers (the contacts are plated with a high-grade Silver/Palladium alloy).
I hope you'll find this object interesting.
Paolo |
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donutty
Joined: 16 Feb 2008
Posts: 1122
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| Posted: Thu Feb 25, 2010 11:13 am Post subject: |
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| Nice. It's like a Strowger switch, isn't it? |
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Thu Feb 25, 2010 11:54 am Post subject: |
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| Very nice. |
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thomsonicus
Joined: 11 Dec 2007
Posts: 226
Location: Poland
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| Posted: Thu Feb 25, 2010 11:54 am Post subject: |
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My thought exactly 
Interesting stuff. I like telecomunication devices as they hide lots of stuff that I have literary no idea of.
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