Accession No

4962

Brief Description

6 galvanometer shunts, 2/2 20th C

Origin

Maker

Class

electrical

Earliest Date

1970

Latest Date

1997

Inscription Date

Material

metal (white metal, copper); plastic

Dimensions

length 90mm; height 40mm; width 15mm

Special Collection

Provenance

Donated on 30 July 1997.

Inscription

Description Notes

6 shunts for use with a galvanometer, probably Phillip Harris Crompton model. A shunt extends the limits within which a galvanometer may be used. Allows the comparison of the relative strengths of two different currents.

Fixes to the galvanometer by two metal prongs. They are screwed into a plastic housing which contains different metal strips/wires which offer varying resistance and amperes.

4962.1 0.15 Amperes. Resistance 0.5555 OHMS. Scale reading x 0.01
4962.2 1.5 Amperes. Resistance 0.05051 OHMS. Scale reading x 0.1
4962.3 1.5 Amperes. Resistance 0.0505 OHMS. Scale reading x 0.1
4962.4 3 Amperes. Resistance 0.02512 OHMS. Scale reading x 0.2
4962.5 6 Amperes. Resistance 0.0125 OHMS. Scale reading x 0.4
4962.6 15 Amperes. Resistance 0.005005 OHMS. Scale reading x 1

Condition Good; complete

References

Events