DocumentCode
1077821
Title
A low-noise transistor microphone amplifier
Author
Mcwhorter, M.M. ; Warner, G.S.
Author_Institution
Vidar Corporation, Mountain View, CA, USA
Volume
14
Issue
1
fYear
1966
fDate
3/1/1966 12:00:00 AM
Firstpage
27
Lastpage
31
Abstract
A microphone amplifier is described which possesses good noise characteristics at all gain settings and the capability of handling large input signals without appreciable distortion at low gain settings. A single potentiometer is used as the gain control to 1) vary the negative feedback to provide high overload capability at low gain, and 2) attenuate the output to provide a minimum gain of zero. The circuit is developed from a two-transistor building block.
Keywords
Acoustic noise; Circuits; Feedback; Low-noise amplifiers; Microphones; Noise level; Noise reduction; Performance gain; Potentiometers; Signal to noise ratio;
fLanguage
English
Journal_Title
Audio and Electroacoustics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9278
Type
jour
DOI
10.1109/TAU.1966.1161839
Filename
1161839
Link To Document