Circuit configuration for range switching in tuners
AssigneeSiemens Aktiengesellschaft
InventorHenning Hohmann
Life of this patent
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Abstract
A circuit configuration for range switching in tuners having at least two ranges includes at least two preselector stages each being assigned to a respective tuner range. Each of the preselector stages is connected between a supply potential terminal and a reference potential terminal. Each of the preselector stages has an input terminal, an output terminal and an MOS tetrode with a source terminal. A switchgear has switch outputs to be connected to the reference potential terminal for activating each of the MOS tetrodes. At least one resistor is connected between the source terminal of at least one of the MOS tetrodes and at least one of the switch outputs.
Claims6
A circuit configuration for range switching in tuners having at least two ranges, comprising at least two preselector stages each being assigned to a respective tuner range, each of said preselector stages being connected between a supply potential terminal and a reference potential terminal, and each of said preselector stages having an input terminal, an output terminal and an MOS tetrode with a source terminal;
- a switchgear having switch outputs to be connected to the reference potential terminal for activating each of said MOS tetrodes;
- and at least one resistor connected between the source terminal of at least one of said MOS tetrodes and at least one of said switch outputs.
Dependencies are inferred from the claim text.