JPS55105409A - Band-pass amplifier circuit - Google Patents

Band-pass amplifier circuit

Info

Publication number
JPS55105409A
JPS55105409A JP1369279A JP1369279A JPS55105409A JP S55105409 A JPS55105409 A JP S55105409A JP 1369279 A JP1369279 A JP 1369279A JP 1369279 A JP1369279 A JP 1369279A JP S55105409 A JPS55105409 A JP S55105409A
Authority
JP
Japan
Prior art keywords
transformer
capacitor
input
amplifier circuit
circuit
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.)
Pending
Application number
JP1369279A
Other languages
Japanese (ja)
Inventor
Yukio Matsuoka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1369279A priority Critical patent/JPS55105409A/en
Publication of JPS55105409A publication Critical patent/JPS55105409A/en
Pending 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
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/191—Tuned amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To obtain a band-pass amplifier circuit featuring the high selection characteristics just by using the 1-step coupling circuit and connecting the capacitor between the input and output sides of the mutual induction type transformer. CONSTITUTION:Both amplifier circuit 17 and transformer 11 for extraction of the carrier chrominance signal are provided between input terminals (a)/(b) and output terminals (c)/(d) each of the signals. Then capacitors 12, 13 and 15 plus resistance 14 are connected to the input and output sides of transformer 11. In addition, capacitor 16 is connected between the input and output terminals of transformer 11. As shown by the equivalent circuit in the consisting of transformer 11 and capacitor 16, the parallel tuning circuit is formed with capacitor 16 plus inductance coils 19 and 20 in addition to the conventional tuning characteristics. And this resonance frequency is set to the level slightly lower than the subcarrier frequency to secure the function of the trap, thus obtaining the characteristics in which the degree of selection is enhanced.
JP1369279A 1979-02-07 1979-02-07 Band-pass amplifier circuit Pending JPS55105409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1369279A JPS55105409A (en) 1979-02-07 1979-02-07 Band-pass amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1369279A JPS55105409A (en) 1979-02-07 1979-02-07 Band-pass amplifier circuit

Publications (1)

Publication Number Publication Date
JPS55105409A true JPS55105409A (en) 1980-08-13

Family

ID=11840234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1369279A Pending JPS55105409A (en) 1979-02-07 1979-02-07 Band-pass amplifier circuit

Country Status (1)

Country Link
JP (1) JPS55105409A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS438011Y1 (en) * 1964-07-23 1968-04-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS438011Y1 (en) * 1964-07-23 1968-04-10

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