File:Variometer.jpg
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Variometer.jpg (360 × 476 pixels, file size: 20 KB, MIME type: image/jpeg)
Summary
A variometer, an adjustable air core <a href="https://en.wikipedia.org/wiki/inductor" class="extiw" title="en:inductor">inductor</a> used in radio equipment, from a 1920 book on radio. It was widely used in radio receivers during the 1910s and 20s. Today it is mostly used in transmitter <a href="https://en.wikipedia.org/wiki/antenna_tuner" class="extiw" title="en:antenna tuner">antenna tuners</a> and matching sections for low frequency antennas, to match the transmission line to the antenna.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:50, 6 January 2017 | | 360 × 476 (20 KB) | 127.0.0.1 (talk) | A variometer, an adjustable air core <a href="https://en.wikipedia.org/wiki/inductor" class="extiw" title="en:inductor">inductor</a> used in radio equipment, from a 1920 book on radio. It was widely used in radio receivers during the 1910s and 20s. Today it is mostly used in transmitter <a href="https://en.wikipedia.org/wiki/antenna_tuner" class="extiw" title="en:antenna tuner">antenna tuners</a> and matching sections for low frequency antennas, to match the transmission line to the antenna. |
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