JPS5525255A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS5525255A
JPS5525255A JP9805278A JP9805278A JPS5525255A JP S5525255 A JPS5525255 A JP S5525255A JP 9805278 A JP9805278 A JP 9805278A JP 9805278 A JP9805278 A JP 9805278A JP S5525255 A JPS5525255 A JP S5525255A
Authority
JP
Japan
Prior art keywords
reception
amplifier
transmission
circuit
output
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.)
Granted
Application number
JP9805278A
Other languages
Japanese (ja)
Other versions
JPS6226203B2 (en
Inventor
Eiichi Matsumura
Haruo Niki
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.)
NEC Corp
Nippon Engineering Co Ltd
Japan Engineering Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Nippon Engineering Co Ltd
Japan Engineering Corp
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 NEC Corp, Nippon Electric Co Ltd, Nippon Engineering Co Ltd, Japan Engineering Corp filed Critical NEC Corp
Priority to JP9805278A priority Critical patent/JPS5525255A/en
Publication of JPS5525255A publication Critical patent/JPS5525255A/en
Publication of JPS6226203B2 publication Critical patent/JPS6226203B2/ja
Granted 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
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only

Landscapes

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

Abstract

PURPOSE:To secure an easy correction of the potential at the output middle point of the negative feedback power amplifier down to half of the power voltage in either state of tarnsmission and reception by applying the bias voltage synchronizing with the switch circuit with supply of the fixed bias current. CONSTITUTION:A DC connection is given between amplifier part 300 and negative feedback power amplifer circuit 100, and reception part 200 is connected to circuit 100 via capacitor C1. Transmission/reception change-over switches SW1 and SW2 turn to the transmission and reception states at TX and RX time respectively. Here bias voltage +B is supplied synchronizing with the output of SW1 and SW2 with supply of the fixed bias current. As a result, the potential at output middle point D of amplifier 100 can be corrected down to half of the power voltage easily in either the transmission and the reception states.
JP9805278A 1978-08-10 1978-08-10 Amplifier Granted JPS5525255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9805278A JPS5525255A (en) 1978-08-10 1978-08-10 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9805278A JPS5525255A (en) 1978-08-10 1978-08-10 Amplifier

Publications (2)

Publication Number Publication Date
JPS5525255A true JPS5525255A (en) 1980-02-22
JPS6226203B2 JPS6226203B2 (en) 1987-06-08

Family

ID=14209455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9805278A Granted JPS5525255A (en) 1978-08-10 1978-08-10 Amplifier

Country Status (1)

Country Link
JP (1) JPS5525255A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145442A (en) * 1981-03-04 1982-09-08 Matsushita Electric Ind Co Ltd Low-frequency amplifying circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63247107A (en) * 1987-03-31 1988-10-13 Mitsuboshi Belting Ltd Non-slip tightening rope for tire
JPS6434305U (en) * 1987-08-26 1989-03-02
JPH01148906U (en) * 1988-04-06 1989-10-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145442A (en) * 1981-03-04 1982-09-08 Matsushita Electric Ind Co Ltd Low-frequency amplifying circuit

Also Published As

Publication number Publication date
JPS6226203B2 (en) 1987-06-08

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