JPS5592079A - X-ray protection unit - Google Patents

X-ray protection unit

Info

Publication number
JPS5592079A
JPS5592079A JP16562078A JP16562078A JPS5592079A JP S5592079 A JPS5592079 A JP S5592079A JP 16562078 A JP16562078 A JP 16562078A JP 16562078 A JP16562078 A JP 16562078A JP S5592079 A JPS5592079 A JP S5592079A
Authority
JP
Japan
Prior art keywords
voltage
thyristor
winding
operation start
lowered
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.)
Granted
Application number
JP16562078A
Other languages
Japanese (ja)
Other versions
JPS6035869B2 (en
Inventor
Teruo Goto
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 JP16562078A priority Critical patent/JPS6035869B2/en
Publication of JPS5592079A publication Critical patent/JPS5592079A/en
Publication of JPS6035869B2 publication Critical patent/JPS6035869B2/en
Expired legal-status Critical Current

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  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To detect a high voltage and a beam current to prevent radiation of X- rays and reduce the number of parts to eliminate irregularity of an operation start voltage by providing a voltage detection winding on a fly-back transformer. CONSTITUTION:When a high voltage rises by any cause, the pulse voltage of detection winding T1 rises to raise the gate voltage of thyristor 5. When the voltage of thyristor 5 is lowered below the anode voltage, thyristor 5 becomes conductive. Therefore, horizontal oscillation of horizontal oscillator circuit 1 is stopped, and no high voltage is generated from high-voltae winding T2 of fly-back transformer T. The high voltage value which causes horizontal oscillation to stop can be set arbitrarily by selecting resistances R9 and R10. Meanwhile, when a beam current is increased, the voltage of the negative-side terminal of high-voltage winding T2 becomes negative, and the gate voltage of thyristor 5 is lowered through resistance R11 due to current feedback, and thyristor 5 is made conductive with a lower voltage, and the operation start voltage to stop horizontal oscillation is lowered. By this constitution, the number of parts of the circuit can be reduced, and irregularity of the operation start voltage can be reduced.
JP16562078A 1978-12-30 1978-12-30 X-ray protection device Expired JPS6035869B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16562078A JPS6035869B2 (en) 1978-12-30 1978-12-30 X-ray protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16562078A JPS6035869B2 (en) 1978-12-30 1978-12-30 X-ray protection device

Publications (2)

Publication Number Publication Date
JPS5592079A true JPS5592079A (en) 1980-07-12
JPS6035869B2 JPS6035869B2 (en) 1985-08-16

Family

ID=15815814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16562078A Expired JPS6035869B2 (en) 1978-12-30 1978-12-30 X-ray protection device

Country Status (1)

Country Link
JP (1) JPS6035869B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119275A (en) * 1982-01-07 1983-07-15 Matsushita Electric Ind Co Ltd X-ray prevention device for television receivers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119275A (en) * 1982-01-07 1983-07-15 Matsushita Electric Ind Co Ltd X-ray prevention device for television receivers

Also Published As

Publication number Publication date
JPS6035869B2 (en) 1985-08-16

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