GB757527A - Improvements in or relating to amplifying or mixing circuits - Google Patents
Improvements in or relating to amplifying or mixing circuitsInfo
- Publication number
- GB757527A GB757527A GB3294153A GB3294153A GB757527A GB 757527 A GB757527 A GB 757527A GB 3294153 A GB3294153 A GB 3294153A GB 3294153 A GB3294153 A GB 3294153A GB 757527 A GB757527 A GB 757527A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- valve
- frequency
- reject
- nov
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/42—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers
- H03F3/44—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers with tubes only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
-
- 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
-
- 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
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1716—Comprising foot-point elements
- H03H7/1725—Element to ground being common to different shunt paths, i.e. Y-structure
-
- 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
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1766—Parallel LC in series path
-
- 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
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1775—Parallel LC in shunt or branch path
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
Abstract
757,527. Valve circuits. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE.]. Nov. 27, 1953 [Nov. 27, 1952], No. 32941/53. Class 40 (6). In a " cascode " circuit a filter is connected between the anode of the first valve and the cathode of the second, the characteristic impedance of the filter being substantially equal to the input impedance of the second valve. As shown, the filter 7 is designed to pass a television signal and reject the accompanying sound signal. Alternatively, it may prevent the local oscillator output or an intermediate frequency from being fed back into the aerial or prevent a received signal at a frequency near the intermediate frequency passing to succeeding stages of the circuit. Additional similar stages of amplification with different rejection bands may be added in cascade or the first valve may be arranged as a self-oscillating frequency changer (Fig. 3, not shown), in which case the filter may reject the local oscillator frequency.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET7050A DE1105483B (en) | 1952-11-27 | 1952-11-27 | Circuit for the additive mixing of electromagnetic oscillations |
Publications (1)
Publication Number | Publication Date |
---|---|
GB757527A true GB757527A (en) | 1956-09-19 |
Family
ID=7545476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3294153A Expired GB757527A (en) | 1952-11-27 | 1953-11-27 | Improvements in or relating to amplifying or mixing circuits |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1105483B (en) |
FR (1) | FR1086646A (en) |
GB (1) | GB757527A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1040623B (en) * | 1956-02-23 | 1958-10-09 | Siemens Ag | Broadband antenna amplifier |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1896065A (en) * | 1929-06-29 | 1933-02-07 | Bell Telephone Labor Inc | Selective circuit for superheterodyne radioreceivers |
DE721800C (en) * | 1936-03-18 | 1942-06-19 | Telefunken Gmbh | Overlay receiver with trap circuit for an interfering frequency that corresponds to the intermediate frequency |
FR853988A (en) * | 1938-11-30 | 1940-04-02 | Loewe Radio Company Ltd | Improvements to electrical or radio systems incorporating band filters, in particular short-wave radio systems |
BE477660A (en) * | 1943-12-28 | |||
US2571045A (en) * | 1945-08-08 | 1951-10-09 | Alan B Macnee | Amplifier coupling circuit |
DE964688C (en) * | 1952-11-03 | 1957-05-29 | Telefunken Gmbh | Circuit for additive mixing for ultra-short waves |
-
1952
- 1952-11-27 DE DET7050A patent/DE1105483B/en active Pending
-
1953
- 1953-11-06 FR FR1086646D patent/FR1086646A/en not_active Expired
- 1953-11-27 GB GB3294153A patent/GB757527A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1105483B (en) | 1961-04-27 |
FR1086646A (en) | 1955-02-15 |
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