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Class Information
Number: 330/190
Name: Amplifiers > Input networks > Transformer coupled > With transformer structure
Description: Subject matter involving the structure of the transformer in the input coupling circuit.

Patents under this class:

Patent Number Title Of Patent Date Issued
8044540 Systems and methods for a SPDT switch or SPMT switch with transformer Oct. 25, 2011
7982544 Method and system for amplifying a signal using a transformer matched transistor Jul. 19, 2011
7898340 Method and system for amplifying a signal using a transformer matched transistor Mar. 1, 2011
7348845 System and method for employing variable magnetic flux bias in an amplifier Mar. 25, 2008
6424227 Monolithic balanced RF power amplifier Jul. 23, 2002
4968949 Ohmically isolating input circuit Nov. 6, 1990
4779058 Ohmically isolated input circuit Oct. 18, 1988
4497004 Picture reproducing apparatus in a helical scanning video tape recorder Jan. 29, 1985
4490844 Low frequency transformer Dec. 25, 1984

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