File:Rotary Dial, Dialing Back with LEDs.ogv
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Rotary_Dial,_Dialing_Back_with_LEDs.ogv (file size: 21.24 MB, MIME type: application/ogg)
Summary
| Description |
English: A rotary dial, used for pulse dialing seen from the back while dialing. Two LEDs have been attached, to show the two switches the dial operates. One (red LED) is normally open (NO), and is closed when the rotor is drawn back and remains closed until the rotor fully returns. The other (green LED) is normally closed (NC), and is opened briefly to produce pulses. The number of pulses matches the number dialed (a single digit, 0-9).
This dial was purchased in 2011 at the MIT flea market, in Cambridge, MA, USA. |
| Date | |
| Source | Own work |
| Author | Mark Fickett |
Also available on YouTube: https://www.youtube.com/watch?v=hB7UckFfscw .
360p version:
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 21:42, 5 November 2011 | (21.24 MB) | imagescommonswiki>Naib |
File usage
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- File:Rotary Dial, Dialing Back with LEDs.ogv from Wikimedia Commons
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