GB684803A - Improvements in or relating to thermionic valve amplifier stages of the cathode follower type - Google Patents
Improvements in or relating to thermionic valve amplifier stages of the cathode follower typeInfo
- Publication number
- GB684803A GB684803A GB3058150A GB3058150A GB684803A GB 684803 A GB684803 A GB 684803A GB 3058150 A GB3058150 A GB 3058150A GB 3058150 A GB3058150 A GB 3058150A GB 684803 A GB684803 A GB 684803A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switched
- bias
- control grid
- grid
- cathode
- 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
- 238000009499 grossing Methods 0.000 abstract 1
- 230000001052 transient effect Effects 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
- H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
- H03F3/52—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
684,803. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 13, 1951 [Dec. 14, 1950], No. 30581/50. Class 40 (vi). In a high-power cathode-follower stage V, the control grid is prevented from being accidentally driven positive by providing (1) bias resistance means R1, R2, R3 in the cathode lead to bias the control grid negatively as soon as the bias supply is switched on, (2) high-tension and bias supply smoothing circuits of such timeconstants as to ensure the grid remains negative during the transient periods when the hightension is switched on or, after it is switched off, the grid bias supply is switched off, and (3) a diode D connected between the control grid and earth via delay bias means R6, R7, R8 together with shunt condenser Cl, which provides a conductive path if, during normal operation the control grid of the valve V is driven positive with respect to the cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3058150A GB684803A (en) | 1950-12-14 | 1950-12-14 | Improvements in or relating to thermionic valve amplifier stages of the cathode follower type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3058150A GB684803A (en) | 1950-12-14 | 1950-12-14 | Improvements in or relating to thermionic valve amplifier stages of the cathode follower type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB684803A true GB684803A (en) | 1952-12-24 |
Family
ID=10309885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3058150A Expired GB684803A (en) | 1950-12-14 | 1950-12-14 | Improvements in or relating to thermionic valve amplifier stages of the cathode follower type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB684803A (en) |
-
1950
- 1950-12-14 GB GB3058150A patent/GB684803A/en not_active Expired
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