GB565609A - Improvements in or relating to thermionic valve circuits - Google Patents
Improvements in or relating to thermionic valve circuitsInfo
- Publication number
- GB565609A GB565609A GB7710/43A GB771043A GB565609A GB 565609 A GB565609 A GB 565609A GB 7710/43 A GB7710/43 A GB 7710/43A GB 771043 A GB771043 A GB 771043A GB 565609 A GB565609 A GB 565609A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- anode voltage
- linear
- voltage
- characteristic
- 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
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0138—Electrical filters or coupling circuits
- H03H7/0146—Coupling circuits between two tubes, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Thermally Actuated Switches (AREA)
- Thermistors And Varistors (AREA)
Abstract
565,609. Non-contact-making relays. STANDARD TELEPHONES & CABLES, Ltd., CHATTERJEA, P. K., and SCULLY, C. T. May 14, 1943, No. 7710. [Class 40 (iv)] [Also in Group XL] An intervalve coupling network adapted to transmit direct current comprises a linear and a non-linear resistance having a continuous resistance characteristic so arranged that the proportion of the anode voltage variation transferred is greater than the proportion of mean anode voltage transferred. Fig. 1 shows an intervalve coupling consisting of resistance R1, R2 and a non-linear resistance R comprising a negative temperature coefficient thermistor a voltage dependant resistance of the carborundum type. The operating point is preferably arranged to lie on a flat portion of the combined characteristic, Fig. 2 (not shown), and may be so chosen as to have a negative slope causing a voltage amplification. An indirectly heated thermistor may be used and the heating current varied to obtain the desired characteristic. If the mean anode voltage cannot be stepped down sufficiently in one stage, two stages may be used as shown in Fig. 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB256970X | 1943-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB565609A true GB565609A (en) | 1944-11-17 |
Family
ID=10231824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7710/43A Expired GB565609A (en) | 1943-05-14 | 1943-05-14 | Improvements in or relating to thermionic valve circuits |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2383710A (en) |
| BE (1) | BE469233A (en) |
| CH (1) | CH256970A (en) |
| FR (1) | FR928874A (en) |
| GB (1) | GB565609A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2554905A (en) * | 1946-06-01 | 1951-05-29 | Seismograph Service Corp | Seismic signal amplifier |
| GB665821A (en) * | 1947-07-05 | 1952-01-30 | Automatic Telephone & Elect | Improvements in or relating to electronic trigger circuits |
| US2794864A (en) * | 1952-08-01 | 1957-06-04 | Bell Telephone Labor Inc | Nonreciprocal circuits employing negative resistance elements |
| GB751533A (en) * | 1953-04-28 | 1956-06-27 | Philips Electrical Ind Ltd | Improvements in or relating to direct voltage amplifier circuits |
| US2885612A (en) * | 1957-01-02 | 1959-05-05 | Honeywell Regulator Co | Symmetrically operating servosystem with unsymmetrical servoamplifier |
| US3088325A (en) * | 1959-05-25 | 1963-05-07 | Westinghouse Air Brake Co | Snap-acting safety valve device |
-
0
- BE BE469233D patent/BE469233A/xx unknown
-
1943
- 1943-05-14 GB GB7710/43A patent/GB565609A/en not_active Expired
-
1944
- 1944-03-10 US US525815A patent/US2383710A/en not_active Expired - Lifetime
-
1946
- 1946-02-06 CH CH256970D patent/CH256970A/en unknown
- 1946-05-18 FR FR928874D patent/FR928874A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH256970A (en) | 1948-09-15 |
| BE469233A (en) | |
| US2383710A (en) | 1945-08-28 |
| FR928874A (en) | 1947-12-10 |
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