File:Zellweger ZE 22-3 Ripple receiver relay 1050 Hz.JPG
Size of this preview: 450 × 600 pixels. Other resolutions: 180 × 240 pixels | 360 × 480 pixels | 576 × 768 pixels | 1,200 × 1,600 pixels.
Original file (1,200 × 1,600 pixels, file size: 547 KB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary
edit
| Description | |
| Date | |
| Source | Own work |
| Author | RODALCO |
Remotely operated ON OFF switch for the control of hot water, heating, metering and streetlights. Frequency is 1050 Hz superimposed upon the 50 Hz mains frequency. This device was used to control a 3 kW hot water system in Auckland, New Zealand
Licensing
edit
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 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.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:44, 12 April 2012 | | 1,200 × 1,600 (547 KB) | RODALCO (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
