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Digital Collections

Scientific apparatus and instruments, Electronics

Variable Capacitor

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BY 4.0

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Tall rectangular wooden base with black plastic instrument panel; instrument panel is attached to base via four metal screws, two on each side; two small black plastic knobs that adjust up and down as they are turned are on the top of instrument panel, one on each side; large black plastic dial with knob in center of panel; dial has a white meter on it ranging from 0-100.

Capacitors function as storage devices for the holding of excess electricity at high voltage.

Property Value
Manufacturer
Place of manufacture
Format
Genre
Medium
Extent
  • 7 in. H x 6 in. W x 6 in. D
Inscription
  • (Bottom right of panel) "NOM. MAX. VALUE / 0005MF"
  • (Center top of panel) "LEEDS & NORTHRUP CO. / PHILADELPHIA / 128125 / MADE IN U.S.A."
Subject
Rights Creative Commons Attribution 4.0 International License
Credit line
  • Courtesy of Science History Institute

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Cite as

Science History Institute. Variable Capacitor. Photograph, 2016. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/5425k977r.

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.