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Class Information
Number: 330/282
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including gain control means > Having feedback means acting as variable impedance
Description: Subject matter including a feedback means acting as a variable impedance to control the gain of the amplifier.


Sub-classes under this class:

Class Number Class Name Patents
330/283 Having emitter degeneration 94


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
3938047 Control circuit for use with amplifier Feb. 10, 1976

1 2 3 4 5 6 7


 
 
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