Portable Recording Equipment

Don Canady

After reviewing briefly the requirements of portable and semi-portable recorders in general, a semi-portable and a portable recorder employing the Zetka-Canady glow lamp are described. The features involved in the design of the types A and Q glow lamps are discussed, with particular reference to the electrical and optical characteristics of the systems.

Print ISSN
Published
1933-12
Content type
Original Research
DOI
10.5594/J12970