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FR2423058A1 - CRT oscilloscope with automatic brightness control - uses voltage divider and has brightness and focus control voltages derived from addition circuit - Google Patents

CRT oscilloscope with automatic brightness control - uses voltage divider and has brightness and focus control voltages derived from addition circuit

Info

Publication number
FR2423058A1
FR2423058A1 FR7810640A FR7810640A FR2423058A1 FR 2423058 A1 FR2423058 A1 FR 2423058A1 FR 7810640 A FR7810640 A FR 7810640A FR 7810640 A FR7810640 A FR 7810640A FR 2423058 A1 FR2423058 A1 FR 2423058A1
Authority
FR
France
Prior art keywords
brightness
control
circuit
addition circuit
voltage divider
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
FR7810640A
Other languages
French (fr)
Other versions
FR2423058B1 (en
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.)
BYSH ALEXANDR
Original Assignee
BYSH ALEXANDR
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 BYSH ALEXANDR filed Critical BYSH ALEXANDR
Priority to FR7810640A priority Critical patent/FR2423058A1/en
Publication of FR2423058A1 publication Critical patent/FR2423058A1/en
Application granted granted Critical
Publication of FR2423058B1 publication Critical patent/FR2423058B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/26—Circuits for controlling the intensity of the electron beam or the colour of the display

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Television Scanning (AREA)

Abstract

The cathode ray tube oscilloscope has automatic brightness control throughout signal transients by the removal of any non-linearity from the brightness control voltage. Signals to the vertical deflection plates are delayed with respect to the sweep start. The brightness control includes a differentiating circuit whose input is common with that of the delay line, and feeds a control signal forming circuit whose output is one input of an additional circuit. The focus voltage control circuit is driven from the addition circuit and is itself directly connected to the tube focus electrodes.
FR7810640A 1978-04-11 1978-04-11 CRT oscilloscope with automatic brightness control - uses voltage divider and has brightness and focus control voltages derived from addition circuit Granted FR2423058A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7810640A FR2423058A1 (en) 1978-04-11 1978-04-11 CRT oscilloscope with automatic brightness control - uses voltage divider and has brightness and focus control voltages derived from addition circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7810640A FR2423058A1 (en) 1978-04-11 1978-04-11 CRT oscilloscope with automatic brightness control - uses voltage divider and has brightness and focus control voltages derived from addition circuit

Publications (2)

Publication Number Publication Date
FR2423058A1 true FR2423058A1 (en) 1979-11-09
FR2423058B1 FR2423058B1 (en) 1980-10-31

Family

ID=9206954

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7810640A Granted FR2423058A1 (en) 1978-04-11 1978-04-11 CRT oscilloscope with automatic brightness control - uses voltage divider and has brightness and focus control voltages derived from addition circuit

Country Status (1)

Country Link
FR (1) FR2423058A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502937A (en) * 1968-11-12 1970-03-24 Minnesota Mining & Mfg Electron beam image intensity control
FR2174102A1 (en) * 1972-02-28 1973-10-12 Licentia Gmbh
US3775637A (en) * 1971-09-15 1973-11-27 Rca Corp Cathode ray display intensity control circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502937A (en) * 1968-11-12 1970-03-24 Minnesota Mining & Mfg Electron beam image intensity control
US3775637A (en) * 1971-09-15 1973-11-27 Rca Corp Cathode ray display intensity control circuit
FR2174102A1 (en) * 1972-02-28 1973-10-12 Licentia Gmbh
US3831057A (en) * 1972-02-28 1974-08-20 Licentia Gmbh Circuit arrangement for generating a beam current in a cathode-ray tube

Also Published As

Publication number Publication date
FR2423058B1 (en) 1980-10-31

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Legal Events

Date Code Title Description
EM Correction of a material error concerning inscription in the national patent register
ST Notification of lapse