GB763850A - Improvements relating to electronic frequency selective circuit arrangements - Google Patents

Improvements relating to electronic frequency selective circuit arrangements

Info

Publication number
GB763850A
GB763850A GB1023954A GB1023954A GB763850A GB 763850 A GB763850 A GB 763850A GB 1023954 A GB1023954 A GB 1023954A GB 1023954 A GB1023954 A GB 1023954A GB 763850 A GB763850 A GB 763850A
Authority
GB
United Kingdom
Prior art keywords
networks
band
feed
frequencies
response
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
GB1023954A
Inventor
Maurice Price
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1023954A priority Critical patent/GB763850A/en
Publication of GB763850A publication Critical patent/GB763850A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1295—Parallel-T filters

Landscapes

  • Amplifiers (AREA)

Abstract

763,850. Discharge tube selective amplifying circuits. BRITISH THOMSONHOUSTON CO., Ltd. April 20, 1955 [April 7, 1954], No. 10239/54. Class 40(6) In an amplifier having a feed-back circuit including a pair of resistor-capacitor networks, the networks are tuned to the same frequency and arranged in cascade to give a band-pass or band-stop effect. A band-pass amplifier is obtained, Fig. 4, by employing two networks F1, F2 arranged in the feed-back loop round a discharge tube V1. Each network has an amplitude response and phase response as shown in Figs. 2 and 3. At frequencies near f the two circuits give a small positive output so that peaks occur at frequencies f1, f2, Fig. 5, while at frequencies further removed from f the feed-back is negative. In a practical embodiment, Fig. 7, the filter networks F1, F2 are isolated by cathode followers V2, V3 the networks being shunted by capacitor C7 and resistor R10 to flatten the response (Fig. 8, not shown). A band-stop effect may be obtained (Fig. 10, not shown) by employing a Wien bridge.
GB1023954A 1954-04-07 1954-04-07 Improvements relating to electronic frequency selective circuit arrangements Expired GB763850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1023954A GB763850A (en) 1954-04-07 1954-04-07 Improvements relating to electronic frequency selective circuit arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1023954A GB763850A (en) 1954-04-07 1954-04-07 Improvements relating to electronic frequency selective circuit arrangements

Publications (1)

Publication Number Publication Date
GB763850A true GB763850A (en) 1956-12-19

Family

ID=9964192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1023954A Expired GB763850A (en) 1954-04-07 1954-04-07 Improvements relating to electronic frequency selective circuit arrangements

Country Status (1)

Country Link
GB (1) GB763850A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436668A (en) * 1967-01-26 1969-04-01 Aerojet General Co Broad band amplifiers using distributed rc network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436668A (en) * 1967-01-26 1969-04-01 Aerojet General Co Broad band amplifiers using distributed rc network

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