About Magazine Podcasts Events
Museum Hours:Wednesday–Saturday, 10AM–5PM

Digital Collections

Photographs

Helipot Hermetic Sealed Regulators Models 835 and 836

  • 1950 – 1969

Rights

Unknown Rightsholder

Download selected image

PDFSmall JPG1200 x 949px — 181 KBFull-sized JPG1547 x 1223px — 271 KBOriginal fileTIFF — 1547 x 1223px — 5.5 MB
View
Unknown
Rightsholder
PDF
Download PDF

Voltage regulators maintain a constant voltage level in electrical devices.

Property Value
Photographer
Format
Genre
Extent
  • 5 in. W x 4 in. L
Inscription
  • (verso) "ARMSTRONG & HESS 2020 E. Howell Ave. Anaheim, Calif. 92806 2498 1"
  • (front) "Armstrong/Hess 2489-1 Model 835,836"
Subject
Rights In Copyright - Rights-holder(s) Unlocatable or Unidentifiable
Credit line
  • Courtesy of Science History Institute

Institutional location

Department
Collection
Series arrangement
  • Series X. Photographic Materials
  • Sub-series 3. Photo Albums
Physical container
  • Box 85

View in library catalog

Related Items

Cite as

Armstrong & Hess. “Helipot Hermetic Sealed Regulators Models 835 and 836,” 1950–1969. Beckman Historical Collection, Box 85. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/g732d929f.

  Export citation (RIS) ?

This citation is automatically generated and may contain errors.

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.