JPS5613887A - Driving circuit of cathode-ray tube - Google Patents

Driving circuit of cathode-ray tube

Info

Publication number
JPS5613887A
JPS5613887A JP8973179A JP8973179A JPS5613887A JP S5613887 A JPS5613887 A JP S5613887A JP 8973179 A JP8973179 A JP 8973179A JP 8973179 A JP8973179 A JP 8973179A JP S5613887 A JPS5613887 A JP S5613887A
Authority
JP
Japan
Prior art keywords
clamping
cathode
voltage
crt1
ray tube
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
JP8973179A
Other languages
Japanese (ja)
Inventor
Michitaka Osawa
Shiyuuzou Matsumoto
Hitoshi Maekawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8973179A priority Critical patent/JPS5613887A/en
Publication of JPS5613887A publication Critical patent/JPS5613887A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/72—Circuits for processing colour signals for reinsertion of DC and slowly varying components of colour signals

Abstract

PURPOSE:To realize a low amount of power consumption for the cathode-ray tube driving circuit which applies the clamping at the black level, by flowing the current to the clamping voltage deciding variable resistance only when the clamping circuit is operating. CONSTITUTION:Video signal 15 is amplified to be transmitted to the cathode of color cathode-ray tube CRT1. Clamping transistor 10 conducts by clamping pulse 12 which is caused in the flyback time of the video signal. And the cathode voltage of CRT1 is fixed by clamping voltage deciding variable resistor 11. Then the clamping voltage to be decided is set equal substantially to the cut-off voltage of CRT1. As a result, the variance of the cut-off voltage can be corrected. During the scanning period of the video signal both transistor 10 and clamping diode 16 are turned off. Thus the clamping circuit connected to the cathode terminal of CRT1 can be ignored for the cathode voltage of CRT1. Then the current is flowed to clamping voltage deciding variable resistor 11 only when the clamping circuit is operating in order to realize a low amount of power consumption.
JP8973179A 1979-07-14 1979-07-14 Driving circuit of cathode-ray tube Pending JPS5613887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8973179A JPS5613887A (en) 1979-07-14 1979-07-14 Driving circuit of cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8973179A JPS5613887A (en) 1979-07-14 1979-07-14 Driving circuit of cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS5613887A true JPS5613887A (en) 1981-02-10

Family

ID=13978898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8973179A Pending JPS5613887A (en) 1979-07-14 1979-07-14 Driving circuit of cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS5613887A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877422U (en) * 1981-11-21 1983-05-25 グラフテック株式会社 recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877422U (en) * 1981-11-21 1983-05-25 グラフテック株式会社 recorder

Similar Documents

Publication Publication Date Title
JPS5613887A (en) Driving circuit of cathode-ray tube
JPS56112191A (en) Color temperature control device for image receiving tube
US4032819A (en) Raster centering circuit
GB2186138A (en) Television driver circuit
JPS57186887A (en) Color television set
JPS5610781A (en) Automatic brightness correcting circuit of television receiver
JPS57162575A (en) Vertical deflecting circuit
SE7710554L (en) VIDEO AMPLIFIER
JP2587917B2 (en) Cut-off adjustment device
KR960007922Y1 (en) Support power circuit for charging battery
JPS5577368A (en) Thyristor driving circuit
KR970006986Y1 (en) Black level correcting circuit
JPS56103539A (en) Output circuit
JPS6417589A (en) Video amplifier circuit
KR890009421Y1 (en) Black level correcting circuits
KR820001832Y1 (en) Tv picture control device
JPS6113429B2 (en)
KR920007749Y1 (en) Automatic bright limiting circuit of tv
CN1073821A (en) Crt bias compensation
KR910003672Y1 (en) Picture size control circuit for tv
KR880001272Y1 (en) On screen playing circuit of a television set
KR910001469Y1 (en) Spot killer circuit for double scan digital tv
KR930004816Y1 (en) Blanking circuit for tv
JPS6214787Y2 (en)
JPS5563181A (en) Direct current regeneration circuit