JPS647721A - Agc circuit for transmission - Google Patents

Agc circuit for transmission

Info

Publication number
JPS647721A
JPS647721A JP16115487A JP16115487A JPS647721A JP S647721 A JPS647721 A JP S647721A JP 16115487 A JP16115487 A JP 16115487A JP 16115487 A JP16115487 A JP 16115487A JP S647721 A JPS647721 A JP S647721A
Authority
JP
Japan
Prior art keywords
voltage
signal
peak detecting
output
control
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
JP16115487A
Other languages
Japanese (ja)
Other versions
JPH0543219B2 (en
Inventor
Makoto Nishikawa
Masahiko Miura
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 Engineering Ltd
Original Assignee
NEC Engineering 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 NEC Engineering Ltd filed Critical NEC Engineering Ltd
Priority to JP16115487A priority Critical patent/JPS647721A/en
Publication of JPS647721A publication Critical patent/JPS647721A/en
Publication of JPH0543219B2 publication Critical patent/JPH0543219B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To compensate the error of a gain control voltage and to prevent the fluctuation of the power gain of a transmitting output by executing the partial pressure control of the voltage of a peak detecting signal. CONSTITUTION:By a variable attenuator 1, the power gain control of an input signal is executed, and the output is made into a transmitting signal S6 through a branching device 2. An IF signal S2 branched by the branching device 2 is detected by a peak detecting device 3. An analog switch 6a of a voltage adjusting circuit 6 has switching terminals 2-(n) to execute the partial pressure switching control of a peak detecting signal voltage, a terminal is made into a 1-3 side when the IF signal is a modulating wave, and a peak detecting voltage S31 is partial-pressure-adjusted by R1 and RV1(R1<<RV1) so that an output S7 of the circuit 6 can be the same voltage as a peak detecting voltage S3 when the IF signal is not modulated.
JP16115487A 1987-06-30 1987-06-30 Agc circuit for transmission Granted JPS647721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16115487A JPS647721A (en) 1987-06-30 1987-06-30 Agc circuit for transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16115487A JPS647721A (en) 1987-06-30 1987-06-30 Agc circuit for transmission

Publications (2)

Publication Number Publication Date
JPS647721A true JPS647721A (en) 1989-01-11
JPH0543219B2 JPH0543219B2 (en) 1993-07-01

Family

ID=15729621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16115487A Granted JPS647721A (en) 1987-06-30 1987-06-30 Agc circuit for transmission

Country Status (1)

Country Link
JP (1) JPS647721A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057812A (en) * 1989-11-16 1991-10-15 Yazaki Corporation Noise-suppressing high-tension resistance cable

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755630A (en) * 1980-09-19 1982-04-02 Maspro Denkoh Corp Television signal transmission line

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755630A (en) * 1980-09-19 1982-04-02 Maspro Denkoh Corp Television signal transmission line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057812A (en) * 1989-11-16 1991-10-15 Yazaki Corporation Noise-suppressing high-tension resistance cable

Also Published As

Publication number Publication date
JPH0543219B2 (en) 1993-07-01

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