Letter | Published:

Galvanometer Relays

Nature volume 135, page 187 (02 February 1935) | Download Citation

Subjects

Abstract

THE use of the rectifier photo-cell to amplify galvanometer deflections is now well known; but I have never seen any explicit mention of the fact that, with the customary set-up1, the deflections of the second galvanometer are not in general proportional to those of the first. The discrepancy arises because the area of the photo-cell illuminated changes as the deflection of the primary galvanometer changes.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1.

    , J. Sci. Instr., 8, 262; 1931. NATURE, 133, 685; 1934. , NATURE, 133, 872; 1934. J. Sci. Instr., 11, 302; 1934.

Download references

Author information

Affiliations

  1. Adam Hilger, Ltd., 98 Kings Road, London, N.W.1.

    • D. H. FOLLETT

Authors

  1. Search for D. H. FOLLETT in:

About this article

Publication history

Published

DOI

https://doi.org/10.1038/135187a0

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.