Tube amplifier assembly having a power tube and a capacitor assembly

Patent metadata

Field	Value
Publication number	US-9912308-B2
Application number	US-201615242933-A
Country	US
Kind code	B2
Filing date	Aug 22, 2016
Priority date	Dec 18, 2014
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

Tube amplifier assembly including a power tube that is configured to be coupled to a grounding deck and positioned within an opening of the grounding deck. The tube amplifier assembly also includes a tube adapter that is configured to be coupled to the grounding deck. The tube adapter has a capacitive plate that extends parallel to the grounding deck and an adapter wall that is coupled to the capacitive plate. The tube adapter has an adapter opening that is aligned with the deck opening to form a tube passage. The tube adapter includes flexible conductive elements that are electrically coupled to the capacitive plate and surround the tube passage. The flexible conductive elements engage the power tube in the tube passage and electrically couple the power tube to the capacitive plate. The grounding deck and the capacitive plate form a capacitor assembly.

First claim

What is claimed is:

1. A capacitor assembly comprising:
a capacitive plate configured to extend parallel to and be coupled to a grounding deck of a tube amplifier assembly, the capacitive plate having a plate opening that extends transverse to a central axis;
an adapter wall mechanically coupled to the capacitive plate, the adapter wall having an inner surface that surrounds the central axis and defines a tube opening, the plate opening and tube opening combining to form a tube passage that is sized and shaped to receive a power tube of the tube amplifier assembly; and
flexible conductive elements distributed along the inner surface of the adapter wall, wherein the flexible conductive elements are configured to engage the power tube in the tube passage and electrically couple the power tube to the capacitive plate.

2. The capacitor assembly of claim 1 , wherein the capacitive plate has an outer diameter and the adapter wall has an outer diameter, the outer diameter of the capacitive plate being greater than the outer diameter of the adapter wall.

3. The capacitor assembly of claim 1 , wherein the capacitive plate has a plurality of openings that are symmetrically distributed about the central axis.

4. The capacitor assembly of claim 1 , further comprising an interposed plate that is configured to be positioned between and electrically separated from the grounding deck and the capacitive plate, the interposed plate including a plate opening that forms a portion of the tube passage that receives the power tube.

5. The capacitor assembly of claim 4 , wherein the interposed plate decreases an amount of capacitance provided by the capacitor assembly.

6. The capacitor assembly of claim 4 , wherein the capacitive plate includes securing holes and the interposed plate includes securing holes, the securing holes of the capacitive plate and the interposed plate configured to align and receive hardware for mechanically coupling the capacitive plate and the interposed plate to the grounding deck.

7. The capacitor assembly of claim 4 , further comprising a communication line coupled to the interposed plate, the communication line configured to transmit signals detected by the interposed plate during operation of the tube amplifier assembly.

8. The capacitor assembly of claim 7 , wherein the signals are generated by an input cavity resonator of the tube amplifier assembly.

9. The capacitor assembly of claim 7 , wherein the capacitive plate and the interposed plate form a capacitive voltage divider.

10. The capacitor assembly of claim 9 , wherein the capacitive voltage divider is essentially devoid of resonant behavior caused by parasitic inductance.

11. The capacitor assembly of claim 4 , further comprising an insulative spacer that is configured to separate the capacitive plate and the interposed plate by a predetermined distance.

12. The capacitor assembly of claim 4 , wherein the interposer plate and the capacitive plate are configured to be stacked with respect to the grounding deck, the interposer plate being electrically separated from the grounding deck by an insulative material and electrically separated from the capacitive plate by an insulative material.

13. The capacitor assembly of claim 4 , further comprising an insulation layer that is stacked adjacent to the interposed plate, the interposed plate and the insulation layer having respective securing holes that align with each other, wherein the securing hole of the interposed plate has a larger diameter than a diameter of the securing hole of the insulation layer.

14. The capacitor assembly of claim 1 , further comprising a conductive coupling sheet that is wrapped about the central axis and the adapter wall.

15. The capacitor assembly of claim 1 , wherein the adapter wall is formed from a non-conductive material.

16. The capacitor assembly of claim 1 , wherein the adapter wall and the capacitor plate are molded from a common material such that the adapter wall and the capacitor plate are portions of a single unitary structure.

17. The capacitor assembly of claim 1 , wherein the flexible conductive elements directly engage the capacitive plate.

18. The capacitor assembly of claim 1 , wherein the power tube of the tube amplifier assembly and the capacitor assembly are configured to be co-axial with respect to the central axis, the capacitor assembly configured to be symmetrical about the central axis and the power tube.

19. The capacitor assembly of claim 1 , further comprising the power tube, the power tube having flexible leads.

20. The capacitor assembly of claim 1 , wherein the power tube is a triode having a grounded grid configuration.

Assignees

• Gen Electric

Inventors

• Baecklund Andreas

Classifications

• H01J23/12 Primary

  Vessels; Containers · CPC title

• H01G4/002

  Details · CPC title

• H05H2007/025

  Radiofrequency systems · CPC title

• H03F2200/267

  A capacitor based passive circuit, e.g. filter, being used in an amplifying circuit · CPC title

• H03F3/22 Primary

  with tubes only (H03F3/24 takes precedence) · CPC title