GB829487A - Improvements in or relating to vacuum tube amplifiers - Google Patents
Improvements in or relating to vacuum tube amplifiersInfo
- Publication number
- GB829487A GB829487A GB7075/56A GB707556A GB829487A GB 829487 A GB829487 A GB 829487A GB 7075/56 A GB7075/56 A GB 7075/56A GB 707556 A GB707556 A GB 707556A GB 829487 A GB829487 A GB 829487A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- slit
- electrode
- focusing electrodes
- grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003321 amplification Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electron Tubes For Measurement (AREA)
- Amplifiers (AREA)
- Measurement Of Radiation (AREA)
Abstract
829,487. Thermionic valves. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R.T. March 6, 1956 [March 8, 1955], No. 7075/56. Class 39(1). A tube used for amplification of low voltages of the order of one microvolt has a set of focusing electrodes between anode and cathode, and at least one further electrode between the focusing electrodes and the anode ; circuit means are provided so that a virtual cathode is set up on the said further electrode, to which is also applied an input signal so that it acts as a control electrode. The focusing electrodes are, shown in Fig. 1 as a series of plate 7-10, each having a small slit 29. The first plate 7 has a variable negative bias with respect to cathode 5, -while plates 8, 9, 10 are positively biased. The formation of the virtual cathode depends on the density and. dimensions of the electron beam, applied voltages, and other tube parameters, and an equation is given relating these quantities. The virtual cathode is arranged to be set up at the gap 35 in the electrode 11 which acts as control grid. This gap may be a narrow slit 22, as shown in Fig. 2, or an elongated slit, Fig. 3 (not shown), or a slit in which a set of very thin wires 32 are arranged, either longitudinally, as in Fig. 4, or transversely (or both). Two further grids are shown ; a positive grid 12 and a suppressor grid 13.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU829487X | 1955-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB829487A true GB829487A (en) | 1960-03-02 |
Family
ID=10980521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7075/56A Expired GB829487A (en) | 1955-03-08 | 1956-03-06 | Improvements in or relating to vacuum tube amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB829487A (en) |
-
1956
- 1956-03-06 GB GB7075/56A patent/GB829487A/en not_active Expired
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