JPS5596771A - Video intermediate frequency circuit - Google Patents
Video intermediate frequency circuitInfo
- 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
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
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)
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 |
-
1979
- 1979-01-18 JP JP451179A patent/JPS5596771A/en active Pending
Cited By (1)
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 |