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Class Information
Number: 331/72
Name: Oscillators > Electron-coupled type
Description: Subject matter wherein the active element of the oscillator includes a cathode, two or more grids and an output electrode (e.g., conventional tetrode or pentode) and wherein the cathode and at least two grids are connected in circuit to form a triode oscillator, one of the grids acting as an anode electrode, and wherein the output electrode is coupled to the oscillator solely through the electron stream, so that the output circuit is substantially isolated from the oscillator circuit. In effect, the resulting circuit comprises an oscillator and power amplifier combined in one tube.

Sub-classes under this class:

Class Number Class Name Patents
331/73 Piezoelectric crystal resonator 16

Patents under this class:

Patent Number Title Of Patent Date Issued

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