JPS5596771A - Video intermediate frequency circuit - Google Patents

Video intermediate frequency circuit

Info

Publication number
JPS5596771A
JPS5596771A JP451179A JP451179A JPS5596771A JP S5596771 A JPS5596771 A JP S5596771A JP 451179 A JP451179 A JP 451179A JP 451179 A JP451179 A JP 451179A JP S5596771 A JPS5596771 A JP S5596771A
Authority
JP
Japan
Prior art keywords
sound
carrier wave
trap
circuit
adjacent
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
JP451179A
Other languages
Japanese (ja)
Inventor
Shuzo Ogata
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 JP451179A priority Critical patent/JPS5596771A/en
Publication of JPS5596771A publication Critical patent/JPS5596771A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent attenuation of a sound carrier wave without sharpening the selectivity characteristic of the upper side by providing a trap circuit between upper- side adjacent video carrier wave and adjacent sound carrier wave.
CONSTITUTION: Adjacent sound trap resonance circuit L2 is provided with false adjacent video trap resonance circuit L1. The resonance frequency of circit L1 is a frequency of 51.25MHz lower than the normal adjacent video carrier frequency of 52.75MHz by 1.5MHz. Consequently, the sound carrier wave (54.25MHz) is separated from circuit L1 by 3MHz. As the result, even if the attenuation quantity of false adjacent video trap E is increased, the band in the sound carrier wave side is prevented from being sharpened, and the attenuation quantity of the sound trap circuit resonating to the sound carrier wave is held to prevent sound sensitivity from being damaged.
COPYRIGHT: (C)1980,JPO&Japio
JP451179A 1979-01-18 1979-01-18 Video intermediate frequency circuit Pending JPS5596771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP451179A JPS5596771A (en) 1979-01-18 1979-01-18 Video intermediate frequency circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP451179A JPS5596771A (en) 1979-01-18 1979-01-18 Video intermediate frequency circuit

Publications (1)

Publication Number Publication Date
JPS5596771A true JPS5596771A (en) 1980-07-23

Family

ID=11586070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP451179A Pending JPS5596771A (en) 1979-01-18 1979-01-18 Video intermediate frequency circuit

Country Status (1)

Country Link
JP (1) JPS5596771A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795990A (en) * 1985-04-18 1989-01-03 Matsushita Electric Industrial Co., Ltd. Trap circuit with two variable inductors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795990A (en) * 1985-04-18 1989-01-03 Matsushita Electric Industrial Co., Ltd. Trap circuit with two variable inductors

Similar Documents

Publication Publication Date Title
JPS55121740A (en) Television voice receiving tuner
JPS53108481A (en) Digital frequency analyzer
JPS5298408A (en) Mixer circuit
JPS5596771A (en) Video intermediate frequency circuit
JPS53115281A (en) Earthquake discrimination system
FR2549314B1 (en) QUADRUPOLE OF ADAPTATION, INDEPENDENT OF THE OPERATING FREQUENCY, OF A REACTANCE, AND PROGRESSIVE WAVE AMPLIFIER USING SUCH A QUADRUPOLE
JPS5391612A (en) Receiver for multiple frequency signal
JPS55156414A (en) Band pass filter
JPS5514782A (en) Television picture receiver
JPS5424513A (en) Tuner
JPS52149145A (en) Ultrasonic sensor
JPS5693490A (en) Sound intermediate frequency signal detecting circuit
JPS5222401A (en) Tuner
JPS5486215A (en) Amplifier
JPS5254415A (en) Ultrasonic transmitter and receiver
JPS5359323A (en) Signal processor for video intermediate frequency
JPS5211717A (en) Television signal amplifier
JPS5520046A (en) Sound buzz eliminating device
JPS5379580A (en) Signal recognizer
JPS548401A (en) Variable tuning circuit
JPS53106106A (en) Signal transmitting system
JPS52125223A (en) Tuning circuit
JPS52125222A (en) Tuning circuit
JPS56119539A (en) Four-wire transmission system
JPS6420712A (en) Signal separating circuit