Published Resources Details

Journal Article

Author
Builder, Geoffrey
Title
A multi-range push-pull thermionic voltmeter
In
Journal of the Institution of Engineers, Australia
Imprint
vol. 6, no. 11, Nov 1934, pp. 444-445
Description

This paper, No.496, originated in the Sydney Division of The Institution.
The author, Geoffrey Builder PhD FInstP, is Research Physicist, Radio Research Board of the Council for Scientific and Industrial Research of the Commonwealth of Australia.

Abstract

The paper describes a useful and robust laboratory voltmeter, with a symmetrical input circuit. A 5 mA meter is used to obtain ranges of 0-5, 0-15, 0-50, 0-150 and 0-500 volts, the scale being approximately linear. Range change switching does not require any readjustment, and the calibration is independent of reasonable variation of supply voltages, which may be taken from a rectifier pack, with an alternating current for the filament of the 55 or 85 type valve. Damage to the instrument, due to application of a higher voltage than that for which the range is set, is practically impossible since under no conditions is the total current through the 5 mA meter more than about 7mA.

People

EOAS ID: bib/ASBS17770.htm

This Edition: 2026 February - 1926 Centenaries
Kooyang - Gariwerd calendar - Late summer: late January to late March - season of eels
Reference: https://www.bom.gov.au/resources/indigenous-weather-knowledge/indigenous-seasonal-calendars/gariwerd-calendar#bom-anchor-list__item-kooyang-season-of-eels

Publisher: Swinburne University of Technology.

Except where otherwise noted, content on this site is
Licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
What do we mean by this?

The Encyclopedia of Australian Science and Innovation uses the Online Heritage Resource Manager (OHRM), a relational data curation and web publication system developed by the eScholarship Research Centre and its predecessors at the University of Melbourne 1999-2020. The OHRM has been maintained by Gavan McCarthy since 2020.

Cite this page: https://www.eoas.info/bib/ASBS17770.htm

For earlier editions see the Internet Archive at: https://web.archive.org/web/*/www.eoas.info

"... the rengitj, as a visible mark or imprint on the land, is characterised as a place of origin, the repository of all names, as well as a kind of mapped visual expression of the connection between people and places which is to be carried out in the temporal sequence of the journey." Fanca Tamisari (1998) 'Body, Vision and Movement: In the footprints of the ancestors'. Oceania 68(4) p260