JPS5728408A - Amplifying circuit - Google Patents

Amplifying circuit

Info

Publication number
JPS5728408A
JPS5728408A JP10252280A JP10252280A JPS5728408A JP S5728408 A JPS5728408 A JP S5728408A JP 10252280 A JP10252280 A JP 10252280A JP 10252280 A JP10252280 A JP 10252280A JP S5728408 A JPS5728408 A JP S5728408A
Authority
JP
Japan
Prior art keywords
collector
parallel resonance
resonance circuit
amplifying circuit
coil
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
JP10252280A
Other languages
Japanese (ja)
Inventor
Teruo Minagawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10252280A priority Critical patent/JPS5728408A/en
Publication of JPS5728408A publication Critical patent/JPS5728408A/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
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower

Abstract

PURPOSE:To improve the frequency characteristics, by providing a parallel resonance circuit or a coil to the collector of a collector common amplifying circuit. CONSTITUTION:A parallel resonance circuit 7 is provided between the collector and ground of a transistor (TR) 5. A signal voltage in phase is produced to the parallel resonance circuit 7 to the base and emitter input current phase. This signal voltage is in positive feedback via a capacitance between the base and collector. Even if the emitter capacitance of the TR is greater, the frequency characteristics can be improved with the operation of positive feedback. A coil can be provided other than the parallel resonance circuit.
JP10252280A 1980-07-28 1980-07-28 Amplifying circuit Pending JPS5728408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10252280A JPS5728408A (en) 1980-07-28 1980-07-28 Amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10252280A JPS5728408A (en) 1980-07-28 1980-07-28 Amplifying circuit

Publications (1)

Publication Number Publication Date
JPS5728408A true JPS5728408A (en) 1982-02-16

Family

ID=14329665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10252280A Pending JPS5728408A (en) 1980-07-28 1980-07-28 Amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5728408A (en)

Similar Documents

Publication Publication Date Title
JPS5728408A (en) Amplifying circuit
JPS55158705A (en) Low-noise oscillator
JPS5255359A (en) High-frequency amplifier circuit
KR880010560A (en) amplifier
JPS6465921A (en) Waveform shaping circuit
JPS6439811A (en) Radio frequency tuner oscillator circuit
JPS5684017A (en) High frequency hybrid integrated circuit
JPS5447468A (en) Pulse signal control circuit
JPS5544238A (en) Signal switching circuit
JPS5599805A (en) Voltage control type oscillation circuit
JPS5715578A (en) Carrier wave pickup circut
JPS55121718A (en) Amplitude limiting amplifier
JPS5689130A (en) Electronic circuit
JPS55112006A (en) Oscillator
JPS5642410A (en) Emitter follower circuit
JPS54150903A (en) Car radio
JPS5755623A (en) Contactless switch
JPS56132002A (en) Frequency modulating circuit
JPS575414A (en) Amplitude selecting circuit
GB869567A (en) Reconnaissance electromagnetic survey pack and method
JPS56107606A (en) Voltage control type piezoelectric oscillator
JPS579107A (en) Amplifying circuit
JPS5538769A (en) Amplifier
JPS5379359A (en) High frequency amplfying circuit
JPS54152843A (en) Bias circuit