GB772953A - A method of and a circuit for stabilising a valve amplifier by compensating for variations in the cathode emission - Google Patents
A method of and a circuit for stabilising a valve amplifier by compensating for variations in the cathode emissionInfo
- Publication number
- GB772953A GB772953A GB24107/53A GB2410753A GB772953A GB 772953 A GB772953 A GB 772953A GB 24107/53 A GB24107/53 A GB 24107/53A GB 2410753 A GB2410753 A GB 2410753A GB 772953 A GB772953 A GB 772953A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- circuit
- cathode
- variations
- anode
- 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
- 230000003019 stabilising effect Effects 0.000 title 1
- 230000032683 aging Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification 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)
- Resistance Heating (AREA)
Abstract
772,953. Valve amplifying circuits. TESLA NARODNI PODNIK. Sept. 1, 1953 [Sept. 5, 1952], No. 24107/53. Class 40(6) A valve amplifier in which the anode current of the valve is independent of changes in cathode emission (e.g. due to variations in heater voltage or to ageing of the valve) comprises a valve having more than one grid electrode, the control grid being other than the one nearest the cathode, and a resistor, inserted in the cathode circuit of the valve and having a resistance chosen in accordance with a formula given in the Specification to achieve the desired result. Fig. 1 shows the circuit in its simplest form. By a correct choice of the cathode resistor 5, the anode current ia may be made independent of the heater voltage ef. In a modification, Fig. 2, showing the circuit used as a direct-coupled amplifier compensation for variations of the anode-supply voltage is also provided, one side of the input circuit being connected to a selected point 24 on the potentiometer chain connected across the anode-supply source. Figs. 3, 4, 5, 6 and 12 (not shown) show arrangements using pentode valves, the arrangement of Figs. 5 and 6 (including resistors for effecting self-biasing of the first grid. Figs. 7 to 11 (not shown) show similar arrangements using heptode valves.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS320954X | 1952-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB772953A true GB772953A (en) | 1957-04-17 |
Family
ID=5452198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24107/53A Expired GB772953A (en) | 1952-09-05 | 1953-09-01 | A method of and a circuit for stabilising a valve amplifier by compensating for variations in the cathode emission |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH320954A (en) |
| GB (1) | GB772953A (en) |
-
1953
- 1953-08-28 CH CH320954D patent/CH320954A/en unknown
- 1953-09-01 GB GB24107/53A patent/GB772953A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH320954A (en) | 1957-04-15 |
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