DocumentCode
908574
Title
Level Adjustment of Audio Signals by Means of a Solid-State Electronic Attenuator
Author
Beck, R.
Author_Institution
McCurdy Radio Industries, Ltd.
Issue
1
fYear
1966
fDate
6/1/1966 12:00:00 AM
Firstpage
30
Lastpage
37
Abstract
A solid-state centralized system of level adjustments of audio signals is described. The problem considered was how to adjust and vary the level of audio signals with the same precision achieved with present mechanical step-attenuators. The method finally decided upon was that of using the variable-impedance characteristic of a forward-biased diode. The diode impedance decreases proportionately to the forward direct current flowing through it.
Keywords
Attenuation; Attenuators; Diodes; FETs; Impedance; Pulse modulation; Radio broadcasting; Radio frequency; Relays; Solid state circuits;
fLanguage
English
Journal_Title
Broadcasting, IEEE Transactions on
Publisher
ieee
ISSN
0018-9316
Type
jour
DOI
10.1109/TBC.1966.265863
Filename
4043562
Link To Document