JPS57104311A - Television signal receiving amplifier - Google Patents

Television signal receiving amplifier

Info

Publication number
JPS57104311A
JPS57104311A JP55180748A JP18074880A JPS57104311A JP S57104311 A JPS57104311 A JP S57104311A JP 55180748 A JP55180748 A JP 55180748A JP 18074880 A JP18074880 A JP 18074880A JP S57104311 A JPS57104311 A JP S57104311A
Authority
JP
Japan
Prior art keywords
current
state
region
receiving amplifier
distortion
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
JP55180748A
Other languages
Japanese (ja)
Inventor
Nobutaka Inoue
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.)
Maspro Denkoh Corp
Original Assignee
Maspro Denkoh 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 Maspro Denkoh Corp filed Critical Maspro Denkoh Corp
Priority to JP55180748A priority Critical patent/JPS57104311A/en
Publication of JPS57104311A publication Critical patent/JPS57104311A/en
Pending legal-status Critical Current

Links

Landscapes

  • Details Of Television Systems (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE: To reduce the occurrence of distortion to receive high-quality pictures, by controlling the base bias of a transistor amplifier and the feedback quantity while interlocking them with each other.
CONSTITUTION: In case that this receiving amplifier is used in the region of a strong electric field, a variable resistance 23 of a field selecting means 15 is moved to the side of the first terminal 20. Under this state, since the base current of a transistor TR 4 is increased, the collector current is increased, and the amplification characteristic of the TR 4 is operated in a low-distortion state. Then, a current flowed to a diode 11 is reduced; and through the current is fed back negatively, it matters little in the region of a strong field. In case that this receiving amplifier is used in the region of a weak field, the variable resistance 23 is moved to the side of the second terminal 21. Under this state, the collector current of the TR 4 is reduced, and a current flowed to the diode 11 becoms a large value, and the amplifying function is executed under a good negative feedback state. Since the input signal level is small, the distortion rate of the TR 4 is not a large matter.
COPYRIGHT: (C)1982,JPO&Japio
JP55180748A 1980-12-19 1980-12-19 Television signal receiving amplifier Pending JPS57104311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55180748A JPS57104311A (en) 1980-12-19 1980-12-19 Television signal receiving amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55180748A JPS57104311A (en) 1980-12-19 1980-12-19 Television signal receiving amplifier

Publications (1)

Publication Number Publication Date
JPS57104311A true JPS57104311A (en) 1982-06-29

Family

ID=16088619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55180748A Pending JPS57104311A (en) 1980-12-19 1980-12-19 Television signal receiving amplifier

Country Status (1)

Country Link
JP (1) JPS57104311A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54105449A (en) * 1978-02-06 1979-08-18 Maspro Denko Kk Community receiving amplifier
JPS5513417B2 (en) * 1973-03-07 1980-04-09

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513417B2 (en) * 1973-03-07 1980-04-09
JPS54105449A (en) * 1978-02-06 1979-08-18 Maspro Denko Kk Community receiving amplifier

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