GB235254A - Improvements in cathode ray oscillographs - Google Patents

Improvements in cathode ray oscillographs

Info

Publication number
GB235254A
GB235254A GB347224A GB347224A GB235254A GB 235254 A GB235254 A GB 235254A GB 347224 A GB347224 A GB 347224A GB 347224 A GB347224 A GB 347224A GB 235254 A GB235254 A GB 235254A
Authority
GB
United Kingdom
Prior art keywords
diode
condenser
oscillations
triode
controlled
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.)
Expired
Application number
GB347224A
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.)
EDWARD VICTOR APPLETON
JAMES FLEMING HERD
Original Assignee
EDWARD VICTOR APPLETON
JAMES FLEMING HERD
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 EDWARD VICTOR APPLETON, JAMES FLEMING HERD filed Critical EDWARD VICTOR APPLETON
Priority to GB347224A priority Critical patent/GB235254A/en
Publication of GB235254A publication Critical patent/GB235254A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H03K4/16—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a single tube with positive feedback through transformer, e.g. blocking oscillator

Abstract

235,254. Appleton, E. V., Herd, J. F., and Watt, R. A. W. Feb. 11, 1924. Electrostatic meters. - In a cathode-ray oscillograph. a time base which is sensibly linear and unidirectional is produced by means of an electromotive force varying at a controlled and uniform rate in one direction. An oscillating circuit C tuned to a high frequency, for example 3000 kilocycles, is connected in the anode circuit FA of a triode AGF. A reaction coil R is coupled to this circuit so as to produce oscillations. A condenser C is connected between the coil Rand the negative limb of the filament F, and across this condenser is connected a. diode D, which may be a triode of which the grid and plate are connected together. The filament current of the diode may be controlled by a rheostat P, and the saturation of the diode may be controlled by adjustment of a battery B, whereby the linearity of the time scale may be improved. The electromotive force across the condenser C is applied to one pair of plates of the cathode-ray oscillograph the conductivity of the saturated diode being preferably much greater than that between the plates of the oscillograph. With suitable adjustments the system oscillates in trains of oscillations. During each train the grid G rapidly becomes negatively charged, and at the end of each train the grid charge leaks at a uniform rate through the saturated diode D until the next train of oscillations occurs. The time of this leak is determined by the capacity of the condenser C and by the electron emission in the diode D. The ratio of the time of uniform leakage to that during which high-frequency oscillations takes place may be increased by increasing the temperature of the filament F of the triode. Specifications 221.338 and 223,368 are referred to.
GB347224A 1924-02-11 1924-02-11 Improvements in cathode ray oscillographs Expired GB235254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB347224A GB235254A (en) 1924-02-11 1924-02-11 Improvements in cathode ray oscillographs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB347224A GB235254A (en) 1924-02-11 1924-02-11 Improvements in cathode ray oscillographs

Publications (1)

Publication Number Publication Date
GB235254A true GB235254A (en) 1925-06-11

Family

ID=9758953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB347224A Expired GB235254A (en) 1924-02-11 1924-02-11 Improvements in cathode ray oscillographs

Country Status (1)

Country Link
GB (1) GB235254A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2491342A (en) * 1945-06-14 1949-12-13 Townshend John Horace Stroboscope
US2536804A (en) * 1945-06-29 1951-01-02 Stromberg Carlson Co Delayed pulse circuit arrangement
US2562925A (en) * 1946-01-15 1951-08-07 Leon J Lader Sweep generator
DE756225C (en) * 1936-02-04 1951-12-20 Emi Ltd Self-locking tilting vibration generator
DE755354C (en) * 1935-08-12 1951-12-20 Emi Ltd Circuit arrangement for saw tooth generators
US2588098A (en) * 1947-12-31 1952-03-04 Gen Electric Pulse generator
DE763072C (en) * 1936-02-03 1952-06-05 Marconi Wireless Telegraph Co Feedback, intermittently self-locking oscillation generator with an RC element in the grid circle (blocking oscillator)
US2755382A (en) * 1946-03-26 1956-07-17 George H Nibbe Sawtooth generator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755354C (en) * 1935-08-12 1951-12-20 Emi Ltd Circuit arrangement for saw tooth generators
DE763072C (en) * 1936-02-03 1952-06-05 Marconi Wireless Telegraph Co Feedback, intermittently self-locking oscillation generator with an RC element in the grid circle (blocking oscillator)
DE756225C (en) * 1936-02-04 1951-12-20 Emi Ltd Self-locking tilting vibration generator
US2491342A (en) * 1945-06-14 1949-12-13 Townshend John Horace Stroboscope
US2536804A (en) * 1945-06-29 1951-01-02 Stromberg Carlson Co Delayed pulse circuit arrangement
US2562925A (en) * 1946-01-15 1951-08-07 Leon J Lader Sweep generator
US2755382A (en) * 1946-03-26 1956-07-17 George H Nibbe Sawtooth generator
US2588098A (en) * 1947-12-31 1952-03-04 Gen Electric Pulse generator

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