GB757527A - Improvements in or relating to amplifying or mixing circuits - Google Patents

Improvements in or relating to amplifying or mixing circuits

Info

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
Application number
GB3294153A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Publication of GB757527A publication Critical patent/GB757527A/en
Expired legal-status Critical Current

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.
GB3294153A 1952-11-27 1953-11-27 Improvements in or relating to amplifying or mixing circuits Expired GB757527A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR1086646A (en) 1955-02-15
DE1105483B (en) 1961-04-27

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