JPS6430385A - Demagnetizing circuit - Google Patents

Demagnetizing circuit

Info

Publication number
JPS6430385A
JPS6430385A JP18816687A JP18816687A JPS6430385A JP S6430385 A JPS6430385 A JP S6430385A JP 18816687 A JP18816687 A JP 18816687A JP 18816687 A JP18816687 A JP 18816687A JP S6430385 A JPS6430385 A JP S6430385A
Authority
JP
Japan
Prior art keywords
circuit
relay
switch
terminal
demagnetizing
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
JP18816687A
Other languages
Japanese (ja)
Inventor
Takeo Shimada
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 Corp
Original Assignee
NEC Corp
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 Corp filed Critical NEC Corp
Priority to JP18816687A priority Critical patent/JPS6430385A/en
Publication of JPS6430385A publication Critical patent/JPS6430385A/en
Pending legal-status Critical Current

Links

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To execute the demagnetizing operation of a magnetized shadow mask within a short time by providing a switch, a rectifier circuit, a relay, a positive polarity thermister, a demagnetizing coil, and a delay circuit. CONSTITUTION:The titled circuit is constituted of power supply terminals E1, E2 through which AC power supply is supplied, a rectifier circuit 1 whose input terminal is connected to the terminal E1 via a switch S that turns off only during the operation, a relay RL provided with brake switches rl1, rl2 that turn off during the action of the relay RL, a positive polarity thermister TH connected to the terminal E1 via a brake switch rl1, the demagnetizing coil L connected in series to a thermister TH and to another terminal E2, and the delay circuit 2 which is supplied with power from the output terminal of the circuit 1, and delays the action of the relay RL for a prescribed time. As a result, demagnetizing action is automatically operated when the power is supplied to the circuit. Since the sharl of magnetized shadow masks after can be demagnetized at any time through switch operation, color smears in a picture can easily be eliminated.
JP18816687A 1987-07-27 1987-07-27 Demagnetizing circuit Pending JPS6430385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18816687A JPS6430385A (en) 1987-07-27 1987-07-27 Demagnetizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18816687A JPS6430385A (en) 1987-07-27 1987-07-27 Demagnetizing circuit

Publications (1)

Publication Number Publication Date
JPS6430385A true JPS6430385A (en) 1989-02-01

Family

ID=16218907

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18816687A Pending JPS6430385A (en) 1987-07-27 1987-07-27 Demagnetizing circuit

Country Status (1)

Country Link
JP (1) JPS6430385A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6109751A (en) * 1996-10-30 2000-08-29 Seiko Epson Corporation Projector and lighting optical system therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6109751A (en) * 1996-10-30 2000-08-29 Seiko Epson Corporation Projector and lighting optical system therefor

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