JPS5530269A - Cathode current detector - Google Patents

Cathode current detector

Info

Publication number
JPS5530269A
JPS5530269A JP10405178A JP10405178A JPS5530269A JP S5530269 A JPS5530269 A JP S5530269A JP 10405178 A JP10405178 A JP 10405178A JP 10405178 A JP10405178 A JP 10405178A JP S5530269 A JPS5530269 A JP S5530269A
Authority
JP
Japan
Prior art keywords
cathode
voltage
current
terminal
cathode current
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
JP10405178A
Other languages
Japanese (ja)
Other versions
JPS623634B2 (en
Inventor
Chika Fukuda
Haruo Kawabata
Shinichi Matsushita
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 JP10405178A priority Critical patent/JPS5530269A/en
Publication of JPS5530269A publication Critical patent/JPS5530269A/en
Publication of JPS623634B2 publication Critical patent/JPS623634B2/ja
Granted legal-status Critical Current

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Landscapes

  • Television Receiver Circuits (AREA)

Abstract

PURPOSE: To detect definitely a cathode current by developing a control voltage by flowing the half of the cathode current to an impedance element through a current Miller circuit.
CONSTITUTION: Output terminal 2 is connected to the cathode of a cathode-ray tube;and applying a cathode-application voltage to input terminal 1 develops at terminal 2 a voltage higher, than the voltage applied to terminal 1 by the base- emitter voltage of transistor 3, and it is supplied to the cathode. Then, transistors 3 and 4 constitute a current Miller circuit and the cathode current passing through terminal 2 is equally divided into two, which flow to transistors 3 and 4 respectively, so that a current half as much as the cathode current will flow to impedance element 5. When element 5 operates as a resistance, a voltage equivalent to the product of the resistance value of it and a current value a half the cathode current can be obtained at output terminal 6. Namely, since the value of element 5 is known previously, the voltage at terminal 6 can be used for various control regarding this voltage as one equivalent to the cathode current value.
COPYRIGHT: (C)1980,JPO&Japio
JP10405178A 1978-08-25 1978-08-25 Cathode current detector Granted JPS5530269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10405178A JPS5530269A (en) 1978-08-25 1978-08-25 Cathode current detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10405178A JPS5530269A (en) 1978-08-25 1978-08-25 Cathode current detector

Publications (2)

Publication Number Publication Date
JPS5530269A true JPS5530269A (en) 1980-03-04
JPS623634B2 JPS623634B2 (en) 1987-01-26

Family

ID=14370401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10405178A Granted JPS5530269A (en) 1978-08-25 1978-08-25 Cathode current detector

Country Status (1)

Country Link
JP (1) JPS5530269A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150680A (en) * 1979-05-09 1980-11-22 Philips Nv Television picture indicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150680A (en) * 1979-05-09 1980-11-22 Philips Nv Television picture indicator

Also Published As

Publication number Publication date
JPS623634B2 (en) 1987-01-26

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