JPS6462994A - Demagnetizing circuit for color crt - Google Patents

Demagnetizing circuit for color crt

Info

Publication number
JPS6462994A
JPS6462994A JP22069287A JP22069287A JPS6462994A JP S6462994 A JPS6462994 A JP S6462994A JP 22069287 A JP22069287 A JP 22069287A JP 22069287 A JP22069287 A JP 22069287A JP S6462994 A JPS6462994 A JP S6462994A
Authority
JP
Japan
Prior art keywords
time
current
flowing
power source
circuit
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
JP22069287A
Other languages
Japanese (ja)
Inventor
Chiharu Arai
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP22069287A priority Critical patent/JPS6462994A/en
Publication of JPS6462994A publication Critical patent/JPS6462994A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To remove the influence of a rush current generated at the time of inputting a power source and to surely demagnetize a color CRT by starting a current flowing to a demagnetizing coil when a prescribed delaying time passes after the power source is inputted. CONSTITUTION:When a power switch 22 is inputted, a power source detecting circuit 27 is operated, and a first timer circuit 28 starts to time a delaying time T1. At the time when the delaying time T1 passes, a current-flowing start signal is sent from the first timer circuit 28 to a second timer circuit 29. The second timer circuit 29 starts to time a current-flowing time T2 and, simultaneously, a sends a current-flowing signal at a high level to a waveform shaping circuit 30. By the waveform shaping circuit 30, a TRIAC24 is conducted, and an alternating current supplied from a power source 21 is started to flow to a demagnetizing coil 26. At the time when the current-flowing time T2 passes, the TRIAC24 is interrupted, and the current of the demagnetizing coil 26 is interrupted.
JP22069287A 1987-09-03 1987-09-03 Demagnetizing circuit for color crt Pending JPS6462994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22069287A JPS6462994A (en) 1987-09-03 1987-09-03 Demagnetizing circuit for color crt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22069287A JPS6462994A (en) 1987-09-03 1987-09-03 Demagnetizing circuit for color crt

Publications (1)

Publication Number Publication Date
JPS6462994A true JPS6462994A (en) 1989-03-09

Family

ID=16754991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22069287A Pending JPS6462994A (en) 1987-09-03 1987-09-03 Demagnetizing circuit for color crt

Country Status (1)

Country Link
JP (1) JPS6462994A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916486A (en) * 1982-07-19 1984-01-27 Mitsubishi Electric Corp Degaussing circuit
JPS60134585A (en) * 1983-12-22 1985-07-17 Matsushita Electric Ind Co Ltd Degaussing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916486A (en) * 1982-07-19 1984-01-27 Mitsubishi Electric Corp Degaussing circuit
JPS60134585A (en) * 1983-12-22 1985-07-17 Matsushita Electric Ind Co Ltd Degaussing device

Similar Documents

Publication Publication Date Title
AU3842395A (en) Toothbrush and process for indicating the cleaning time
JPS51113108A (en) Automatic voltage control system in brushless generator
ES2107969A1 (en) Forced, resonant degaussing system and method
IN185531B (en)
JPS5746675A (en) Power circuit
JPS57208888A (en) Speed detecting system for induction motor
JPS5768667A (en) Polarity reversal type rectifying circuit
JPS5719171A (en) Pulse arc welding device
JPS5725289A (en) Arc welding apparatus
JPS5250443A (en) Control process of magnetic grit type electromagnetic connecting appar atus
JPS53121622A (en) Sequence control method of copying machine
JPS5668583A (en) Electric power source unit for arc welding
JPS6445963A (en) Ignition device for internal combustion engine
JPS648899A (en) Step motor drive circuit
JPS55101514A (en) Sorting magnet device
SU558769A1 (en) Dual circuit power supply
JPS575426A (en) Multichannel analog-to-digital converter
SU469227A1 (en) Control device of the reserved generator of clock pulses
SU1193592A2 (en) Apparatus for direct current measurement
SU455491A1 (en) Electronic analog key control device with galvanic isolation
JPS56131070A (en) Arc welding machine
JPS57165177A (en) Method and device for controlling electric power source for pulse arc welding
SE8401368D0 (en) PROCEDURE AND DEVICE FOR ELIGINAL SEPARATION
JPS576590A (en) Controller for alternating current motor
JPS5746659A (en) Brushless synchronous motor