Primary radio-frequency standardisation by use of the cathode-ray oscillograph
Book details
- Title
- Primary radio-frequency standardisation by use of the cathode-ray oscillograph
- Publication year listed
- 1923
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Primary radio-frequency standardisation by use of the cathode-ray oscillograph
Year: 1923
A method of high accuracy has been developed far the primary standardisation of radio frequency. Comparison is made between a tuning-fork of accurately known frequency with an electron-tube drive and a generating set of radio-frequency current by the use of two radio-frequency generating sets and Lissajous figures produced in a kathade-ray oscillograph. The apparatus used in this work consisted of a Bureau of Standards type R70B wave-meter which has a variable air condenser, 4 fixed mica condensers and 5 interchangeable inductors, a tuning-fork of 1024.2 cycles per second driven by a 5-watt electron-tube generating set, 2 radio-frequency generating sets each using a 250-watt electron tube, a kathode-ray oscillagraph having a tube of the cold kathode type re
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