A Newly Developed Light Modulator for Sound Recording
A new light modulator, recently developed, has very low distortion and greatly improved performance characteristics. It is of the magnetic type and is mechanically and optically interchangeable with the present RCA sound-recording galvanometers. The power required for 100 per cent modulation is 1.25 w. Distortion characteristics, frequency-response curves, and impedance data are shown. The effect of bias current upon the performance characteristics is also given.
- Print ISSN
- 0097-5834
- Published
- 1947-07
- Content type
- Original Research
- DOI
- 10.5594/J12687
Download the PDF
or become a SMPTE member today to access the
article.
Become a SMPTE
member today to access the article.