JPS5647121A - Local afc circuit - Google Patents

Local afc circuit

Info

Publication number
JPS5647121A
JPS5647121A JP12302979A JP12302979A JPS5647121A JP S5647121 A JPS5647121 A JP S5647121A JP 12302979 A JP12302979 A JP 12302979A JP 12302979 A JP12302979 A JP 12302979A JP S5647121 A JPS5647121 A JP S5647121A
Authority
JP
Japan
Prior art keywords
afc
voltage
series resistance
resistance circuits
electronic tuner
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
JP12302979A
Other languages
Japanese (ja)
Inventor
Takashi Matsubara
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 JP12302979A priority Critical patent/JPS5647121A/en
Publication of JPS5647121A publication Critical patent/JPS5647121A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control

Abstract

PURPOSE:To lower the cost of production by simplifying an AFC circuit by superposing an AFC voltage on a tuning voltage to be applied to an electronic tuner. CONSTITUTION:A tuning voltage, set by variable resistor VR1 or VR2, is applied to the base of transistor TR1 by being selected corresponding to channel-selecting IC1 and channel-selection switches SW1 and SW2 and then applied to series resistance circuits R2, R3 and R4 as an emitter-follower output. An AFC voltage, on the other hand, is inputted to terminal A and then applied as the emitter-follower output of transistor TR5 to sides of series resistance circuits closer to the earth. Then, voltages led out of sides of series resistance circuits farther from the earth are outputted to the electronic tuner. As a result, it is unnecessary to provide a tuning circuit for AFC in the electronic tuner.
JP12302979A 1979-09-25 1979-09-25 Local afc circuit Pending JPS5647121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12302979A JPS5647121A (en) 1979-09-25 1979-09-25 Local afc circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12302979A JPS5647121A (en) 1979-09-25 1979-09-25 Local afc circuit

Publications (1)

Publication Number Publication Date
JPS5647121A true JPS5647121A (en) 1981-04-28

Family

ID=14850448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12302979A Pending JPS5647121A (en) 1979-09-25 1979-09-25 Local afc circuit

Country Status (1)

Country Link
JP (1) JPS5647121A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5180573A (en) * 1991-02-08 1993-01-19 Mitsubishi Gas Chemical Company, Inc. Method for producing hydrogen peroxide
US5378450A (en) * 1993-04-19 1995-01-03 Mitsubishi Gas Chemical Company, Inc. Process for producing hydrogen peroxide
US5399334A (en) * 1993-05-06 1995-03-21 Mitsubishi Gas Chemical Company, Inc. Process for producing hydrogen peroxide
US5496532A (en) * 1992-11-20 1996-03-05 Showa Denko K. K. Process for producing hydrogen peroxide
US5965101A (en) * 1996-01-30 1999-10-12 Sumitomo Chemical Company, Limited Process for producing hydrogen peroxide

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5180573A (en) * 1991-02-08 1993-01-19 Mitsubishi Gas Chemical Company, Inc. Method for producing hydrogen peroxide
US5496532A (en) * 1992-11-20 1996-03-05 Showa Denko K. K. Process for producing hydrogen peroxide
US5378450A (en) * 1993-04-19 1995-01-03 Mitsubishi Gas Chemical Company, Inc. Process for producing hydrogen peroxide
US5399334A (en) * 1993-05-06 1995-03-21 Mitsubishi Gas Chemical Company, Inc. Process for producing hydrogen peroxide
US5965101A (en) * 1996-01-30 1999-10-12 Sumitomo Chemical Company, Limited Process for producing hydrogen peroxide

Similar Documents

Publication Publication Date Title
FI843679L (en) AVSTAEMNINGSENHET FOER APPARATER FOER UNDERRAETTELSEKOMMUNIKATIONSTEKNIK.
JPS5647121A (en) Local afc circuit
JPS5639525A (en) Exposure control circuit of camera
JPS5544238A (en) Signal switching circuit
EP1271777A4 (en) A digital technologic attenuate control circuit of current-model step by step
JPS5769278A (en) Quartz oscillation type electronic watch
JPS55137716A (en) Level shift circuit
SU1238192A1 (en) Device for compensating residual temperature instability of reference voltage source
JPS6031337Y2 (en) Television receiver channel selection device
JPS561769A (en) Constant current circuit
KR850001671Y1 (en) Tunning voltage supply for tv tunner
GB1447869A (en) Circuit arrangement for a television or radio receiver for switching a tuning voltage from a preset tuning potentiometer to a voltage controllable tuning element at will
JPS57188129A (en) Electronic tuning receiver
JPS573414A (en) Meter driving circuit
JPS5613876A (en) Channel selecting device
JPS5583329A (en) Electronic tuning type channel selector
JPS55159616A (en) Automatic fine tuning unit for tuner
JPS554168A (en) Multiplex signal processor
JPS55158726A (en) Phase delay circuit
JPS5696529A (en) Decoder circuit
JPS554165A (en) Electronic tuning circuit
JPS6477320A (en) Charging pump circuit
JPS5658328A (en) Gate circuit
JPS56141615A (en) Channel selection equipment
JPS5694820A (en) Presetting circuit of receiving device