Improvements relating to feedback amplifiers

Improvements relating to feedback amplifiers

1,009,981. Automatic volume control. ELECTRIC & MUSICAL INDUSTRIES Ltd. June 12, 1962 [June 10, 1961], No. 21047/61. Heading H4R. Automatic gain control is applied only at certain frequencies in an amplifier 1, by controlling the degree of feed-back over a frequency selective negative feed-back...

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Bibliographische Detailangaben
1. Verfasser: LAM YAT WAH
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
CONTROL OF AMPLIFICATION
ELECTRICITY
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Zusammenfassung:1,009,981. Automatic volume control. ELECTRIC & MUSICAL INDUSTRIES Ltd. June 12, 1962 [June 10, 1961], No. 21047/61. Heading H4R. Automatic gain control is applied only at certain frequencies in an amplifier 1, by controlling the degree of feed-back over a frequency selective negative feed-back path 2, 3. The degree of feedback is controlled in accordance with the level of the frequency components it is desired to control, selected by network 5, which is similar to the network 2 in the feedback path. Alternatively, the feed-back control signal may be derived from between network 2 and amplifier 3.